That's a 20% to 50% increase, depending on conditions. Thermoquad vs Quadrajet | DodgeTalk Forum Beginning with the 0-1848-2, this new carburetor draws roots from the original 465 CFM List: 1848, but will all of the contemporary features you've come to love from their Street Warrior models. 0-80783C 650 vacuum secondary carb. I bought and installed an Edelbrock square bore and did not need an adapter. The car in my avartar is mine. Holley vs Edelbrock | Vintage Mustang Forums /build/vs2013/davs2. Very easy to rejet too and available in different cfm models. About Spread Holley Quadrajet Bore Vs . The Edelbrock 750 will not work with most Holley-style drop-based air cleaners because of the fuel inlet position, but this can be remedied with a banjo fitting. I've put maybe 3000 miles on the Corvette and have had zero issues with the . what i've read is people saying it works almost as good as the truck avenger and better than whatever 4wd carb that edelbrock came out with. In summary from earlier topics posted by other members here over the years, I would have to rate the carbs in this order in terms of tuning: 1. Two-cents worth, but a Holley is the easiest carb to adjust hands down. 037 metering rods; orange (5" Hg) step-up spring. Dan. Page 1 of 2 1 2 Next > Sep 11, 2020 #1. It would have to be a wild 265 to require more than 500cfm on the street. I have a holley 600 on my 72 vette, with an edelbrock performer intake, that works great. Author Topic: Was going to be a qjet rebuild, now Holley vs. Edelbrock (Read 12327 times) "Cadillac Kid" Greg Surfas 15364. The carbs will be an Edelbrock model 1910 quadrajet (850 cfm) with a Cliff Ruggles kit installed versus a Holley 850 vacuum secondary model 80531. Edelbrock just came out with their 800CFM version of the Carter, and I have 2 of the 750 CFM carbs, one a true Carter and 1 is Edelbrocks version of the Carter. leaks fuel every where you can imagine pain to adjust,(edlebrock there right there infront of ya) secondaries get stuck,the vacuum thingie rips apart. Page 3 of 3 < Prev 1 2 3. . Didn't look as cool as a Holley, but response was wonderful. I took some pics to compare the height of the manifolds. There was no way to do that with the 670 TA. Edelbrock's .this is the first one and came with the the '52. They are dependable for sure. The Holley is cold-blooded. Location: Woodstock New Brunswick Canada. Thanks to the dual pattern design of the squarebore Sniper EFI systems, you have tons of options even if you're using the less popular spreadbore or Quadrajet style intake manifolds. Edelbrock vs Holley. The regular 600 cfm vacuum secondary Holley that I have would run circles around the 750 Edelbrock that I recently tried on my mildly built 400 small block. Airaid Holley Spread Bore/ Edelbrock Quadrajet PowerAid TB Spacer. It was absolutley the most trouble free and best peforming carb I have ever had. Replacing my old Rochester Quadrajet with an Edelbrock 1406 carburetor. Also, I'll take a Q-Jet any day over a vacuum Holley. I ran a Holley -vs- Qj comparison last fall. I can do 2nd gear starts. Holley recommends their "sticky" gaskets to seal properly and that's what they come with. So you've heard the hype about Holley's Sniper EFI, but you don't have the hood clearance for an adapter and you don't want to replace that spread-bore intak. Quadrajet vs Edelbrock questions. Location: Lake Erie,Gibraltar,Mich. Used Edelbrock 1406 600 Cfm Electric Choke Carburetor Electric Choke Fuel Delivery Carburetor . Adam, I have heard that the Edelbrock is a good replacement for the q-Jet. Rebuild Kit for Edelbrock Quadrajet Carburetors. Buy in monthly payments with Affirm on orders over $50. It does NOT include any base or air cleaner gasket thickness. It's in a '69 Chevelle, TH350, 3.08 rear. The bog on a Holley truck avenger (or on other Holleys) can be caused by not enough timing, accellerator pump cam adjustment, or an improperly sized power valve. If your Edelbrock 500 is an AFB style carburetor, a quadrajet won't fit your intake without an adapter. Russ: I have tuned many of both the Holley and quickfuel carbs. I just thought I would throw this out there since there isn't a lot of info on the new Edelbrock AVS2 carbs. Re: Edelbrock vs quadrajet carb Sure, you can put the marine carb on your Chevy. Holley Spreadbore and Quadrajet. Re: Was going to be a qjet rebuild, now Holley vs. Edelbrock. The holley is really easy to work on and very straight forward and the quadrajet is a little more complex but I've been told that if you read up on them they are really easy to deal with. Holley 0 80350 350 Cfm Street Avenger Carburetor This is a 1984 Chevy K20 3/4, just a yard truck for plowing my property. Hopefully someone looking for a good all around street oriented performance carburetor can benefit from some first hand info on this carb, as well as an honest comparison to another supremely popular street oriented performance carburetor, the Holley Street Avenger (570cfm). TYLOO VS D13. Gets better gas mialage than the 2 barrel did, and his buds about choked when they seen it. Any suggestions? #3. The best out of the box Qj beat the out of the box Holley by 2 m. The Quadrajet is a "spread bore" carburetor; the primary venturis are much smaller than the secondary venturis. As a first suggestion, I would look at the fuel pressure. Re: Was going to be a qjet rebuild, now Holley vs. Edelbrock. HEATHEN , Apr 5, 2007 I don't like holly carbs, they are hard to work on and dump to . Please note that a Quadrajet is a spread bore and will require a different bolt pattern than a square bore, such as a Holley or an Edelbrock Carburetor. Supports up to 500 horsepower with four 100 lb/hr injectors. Edelbrock: plenty of fuel delivery for performance, bad mpg dont expect over 11mpg. Rochester Quadrajet Rebuild Part 2 Automotive Repair Automotive Mechanic Chevy Motors . If you have the COMPUTER CONTROLED Q jet your dist is a CC HEI. On a 305 the Holley 500cfm 2bbl is the perfect size, airflow wise. They started making them in 1975 and ran threw 1990. The AVS2 carburetor features annular flow primary boosters with a new calibration for improved off-idle and cruising performance. Most of the adapters for the spreadbore to squarebore are fairly cheap and can be bought at your local parts store. The Holley would be my carb of choice if I were to road race the car, as the center hung float bowls style is superior on cornering. Gasket Carburetor Adapters, MRG1929, Mr. Jets 67 front, 73 rear, .028 discharge nozzle. i had a q-jet . A Quadrajet may be a good choice for you. I retrofiited a small block chevy marine motor from a Holley to an Edelbrock. I did have a 66, 427/425 Corvette and it came originally with a 3247A Holley 800CFM. The Edelbrock is known for it's ease of installation and adjustment vs. the Holly. As a first suggestion, I would look at the fuel pressure. Should I swap to a Holley or a Quadrajet? 1972 Nova - 454 LS7 - ATI Turbo 400 - Moser 3.73 Wavetrac rear 1967 Sedan - 406 - Powerglide - Moser 3.73 rear - Holley Super Sniper EFI with a shot of Nitrous. /build/vs2013/davs2. Edelbrock 1406 vs 1906 Engine, Transmission & Driveline. Re: Webber VS Quadrajet VS Holley VS Eldlebrock. The Q jet is a good carb, it has a centrally located fuel bowl that isn't as prone to flooding your engine (unless it has the old composite float) as the Holley or Carter (Edelbrock). Well my 29 year old QJet is starting to act up again; it was fine all season. Edelbrock prides themselves in ensuring all products are shipped as quickly as possible. Use VS2013 or latest version of visual studio open the. They both had similar power on my engines, but the Carters usually gave me 4 mpg. That's right, Holley is announcing a revamp of their "Classic Carb" line-up with modernized versions that are constructed from light-weight aluminum! 5 Holley PV; a "stiff" PP spring = a Holley PV of, say, 8. i can say, since i have used quite a number of different carbs over the years, that the holley, the edelbrock/carter, the 4100 autolite, and the quadrajet are all good carbs when built right. Re: Rochester Quadrajet to Edlebrock 1410 Conversion? External float adjustment and mixture adjust that actually did something. The AVS2 features annular flow primary boosters with a new calibration for improved off idle and cruising performance. 016" / 1/64"). I'm planning to swap my quadrajet MV 4 bbl with the edelbrock 1410 - the quadrajet aren't true marine carburetors. Here is what . which one would you choose? The primary metering circuit is designed similarly to the GM Rochester Quadrajet by employing the combination of a main jet with a metering rod. We run a 750 Holley 3310 on our 454 dually and we have no issues . If you should change out the carb to a non CC HEI. and the spring weir's out. Properly tuned really tough to beat. Learn more. Driveability of both carbs is very good. Quadrajet vs. Edelbrock. holley, weber/edelbrock/carter = fuel waste, load up the engine at idle and off idle speeds, and very finicky to get idle mixture dialed in - oh yeah, they're great if you wanna go wide open ALL the time. 327, Edelbrock E-streets, hooker, DUI performance distributors, ultradyne cam, stewart, TRW etc. Quads are the way to go unless you got an endless pocket of cash to pay the gas station. Rebuild Kit for Edelbrock Quadrajet Carburetors. Edelbrock carb vs. Holley Caprice Car Forums . The circuits, bleeds and feeds are essentially the same. Quadrajet vs Edelbrock questions. 600 CFM is Mismatched to the intake and the cam, hence need to upgrade to a 650CFM. 4160 Holley . (click to see a larger image) Reply. In my opinion, the Edelbrock just flat out worked right out of the box. got on ebay and bad deal at the end. HOLLEY VS EDELBROCKdirectly comparing the holley carburetor and edelbrock carburetor. Drag Racing, Holley, simply due to parts availability. Re: edelbrock VS. holley carbs a while back my son and I out an edlebrock carb and intake on his truck (650 cfm) with the high rise intake. Messages. I. Nevertheless, many of us would like to see straight on, level playing field comparisons between the different carb providers. The worst Qj got appoximately 14% better fuel economy than my 600 cfm Holley. Mechanical secondaries. I've used both Edelbrock and Holley, and for me it would boil down to intended use. See our New Carburetors - Quadrajet Rebuild Kit Jet Spacer Hose Pump. Jan 23, 2016 #10. No money to add a 1406 to the testing but that one likely would equal the Holley for fuel economy. Discussion in 'The Hokey Ass Message Board' started by duffymadness, Dec 3, 2012. How "buildable" are Q-jets? The Quickfuel is a Holley variant. I am going to try one on my engine soon. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. The old Qu. The test was four Holley XP series carbs, 650, 750, 850 and 950 CFM. Engine 2: Holley 670, 350, 10:1, E-Tec 170 heads, Lunati 219/227 cam, Performer RPM air-gap, 1 5/8 headers, not sure of exhaust pipe size (2.5" at most). About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . Most of my street rod buddies swear by the Edelbrocks. dubs283 said: quadrajet is the best for idle mixture settings and fuel economy. Use VS2013 or latest version of visual studio open the. We have noticed better throttle response and MPG with a 500 cfm Edelbrock Thunder on a 350 when towing heavy. I have a 1910 850 cfm Edelbrock Quadrajet on my 454, it's the next best thing to fuel injection. If a Holley, which model and at the same time, if a Quadrajet, the 750cfm or the 800cfm. Stick with your Edelbrock, or get a Quadrajet. Re: Edelbrock carb swap from Quadrajet. I am currently thinking about swapping carbs. It is a spreadbore intake that I had a Q-Jet on for awhile. Sounds like a winner to me!! The Edelbrock ran much better, idled smoother and improved gas mileage. Designed to deliver the signature Rochester Roar at Wide Open Throttle! Quadrajet 4 bbl MV vs Edelbrock 1410 Dimensions Be A CHR Contributor Summit racing sent us four of the most popular off-road carburetors including a Holley 750-cfm, a brand-new model Holley Street Avenger 670-cfm, an Edelbrock Performer 750-cfm, and an Edelbrock Q . I believe you are right in that engine size would dictate jetting and overall fuel flow. 6. Many vehicles have had the carburetor replaced and may not have original Quadrajet. Street, Quadrajet is my first choice on a Chevy, but have a great running 600 Holley on my 351. Vintage Air, AGR steering, Corbeau GTSII seats, 700R4 . Tried a lot of Holley carbs too. Thermoquad - most difficult, requiring much skill and experience and it can be very frustrating. Carb Adapter #2696 Square-Bore Carb to Stock QuadraJet & Thermo-Quad 0.85 in. Requires external fuel pressure regulator such as: part # 12-886 or 12-879. Edelbrock is the most respected name in performance. Sniper EFI Quadrajet. The best carb I had on my 440 was a Rochester Quadrajet, needed an adapter plate. Most of the adapters for the spreadbore to squarebore are fairly cheap and can be bought at your local parts store. Those that have struggled with Q-jets never spent the time to learn how to tune them (pretty easy, but you need to know the different systems). Except getting those things off with a power valve change takes time and patience. Looked at re-jetting and installing stiffer pump springs but don't know if its still worth it in the long run. Re: edelbrock vs. q-jet ?? I have had a 30 year love affair with the much maligned Rochester Quadrajet. Edelbrock AVS2 1906 (650 cfm) has a base rod/jet calibration that worked fairly well when I had a 1406, but cruise was still a little lean. Likely well over 100 of the Holley 4150 and their variants. dist. Key features of Edelbrock carbs: 1406 Performer (600 CFM) Without any hesitation, I can say this is the best choice for tuning beginners. The Edelbrock starts and runs better in cold weather. Secondary metering access requires . The difference was stunning. Holley vs. Edelbrock Carbs. There was no way to do that with the 670 TA. Comp Cam hydraulic roller cam 230/236 @ 50 A better than average 400 HP street performance engine. It has a 283 with a Quadrajet right now. When it is flow rated using the spec for 4bbl carbs it flows 375-380 cfm which is what a 305 uses once Volumetric Efficiency is taken into account. Here is something for everyone to kick around. S . I really like to spreadbore configuration because you can cruise on the quarter-sized primaries, but nail the pedal and kick in the monster 2 1/4" secondaries with that cool-sounding "whuahhhhhhhh". It has that old school gold finish. Cfm Rating On Rochester 2 Barrel 7041114 The H A M B . Holley vs. Edelbrock vs. Demon This is usually an email thread that results in direct conflict of opinion and conflicting experiences with no conclusions ever reached. $356 new. Carter/Edelbrock, tried several. HOLLEY VS EDELBROCK directly comparing the holley carburetor and edelbrock carburetor. the 4100(yes you can get a 600cfm autolite just look for the 1.12 carb) is going to be the most reliable and fuel efficient of the bunch, with the qjet . every holley i have gotten has been nothing but a pain i have had 3 and eveyone same problems. Our off road buggy runs a 670 Holley truck avenger on a 400 SBC, the Q-jet couldn't handle the jumps and slopes and flooded alot. Edelbrock 1406 vs 1906 Engine, Transmission & Driveline. By Vinny Perozzi Holley/MSD releases the Sniper EFI Systems for Quadrajet applications, which eliminate the need to continually rebuild 50-plus-year-old Quadrajet carburetors on classic Chevys, Pontiacs, Buicks, Oldsmobiles, and GMCs. 210 cc heads. In addition to all of these great tried and true features, the Sniper EFI . Holley Brawler 650cfm 4 Barrel Double Pumper Carburetor Electric Choke 4150. The AFB and AVS can easily be modifyed for racing and can beat Holley and Q-jets in performance. The Quadrajet is a much more sophisticated carb which will perform better than the primitive Holley but if yours is shot, then it is shot. The best one got nearly 23% better fuel economy! Carburetor Height is the distance from the base plate to the top of the carb, where the air cleaner sits. Surely the Performer RPM (same height as the air-gap) is a lot taller than this quadrajet . Mike $300.00 is a good price for the carb, cost me more to rebuild my quadrajet on the 81. The throttle body will support up to 500 horsepower naturally aspirated. carb the dist. Mar 17, 2010. Edelbrock AVS2 1906 (650 cfm) has a base rod/jet calibration that worked fairly well when I had a 1406, but cruise was still a little lean. 69 Camaro -originally a LM1 car. cant remember the name. Quote. Beyond the size options, one reason the Edelbrock AVS2 line of carburetors is so popular is they offer some very simple opportunities to improve performance and drivability. holley's are cool lookin but thats the only thing good about them in my book. 600 Cfm 4 Brl Holley Vs Quadrajet . Jump to Latest Follow 1 - 16 of 16 Posts. I told you the Holley was a square-bore. The obvious choices (for me, at least) are Holley vs. Rochester Quadrajet, so I have a few basic questions. Joined: Jul 28, 2007. Quadrajet: great mpg and more conservative instead of dumping fuel it uses only what is needes. yeah but i think you'd have to admit that althought the Holley is a much better carb on the track that for the average Joe, the Edelbrock is much more easily maintained than the Holley which is probably why i see more edelbrocks installed on SBC's than anything, but performance id give the edge to Holley but they do require routine tuning for the street. Holley 0 8007 390 Cfm Classic Holley Carburetor . . ______________. If you're making up to 500 horsepower and want to maintain that classic Quadrajet look and sound, the Sniper EFI Quadrajet is . will have to be changed out as well. Edelbrock offers a quick and painless return process on all new and unused products. Q-Jets flow 750 which will support 450 HP and as noted above, will provide better mileage vs. a comparable Holley. Looking for advice and corresponding real-life experience. I believe you are right in that engine size would dictate jetting and overall fuel flow. But hey, the low speed performance and 10 to 12 mpg makes up for that. Adjust hands down i swap to a Holley just has that old school gold finish gave. 454 dually and we have no issues Edelbrock prides themselves in ensuring all products are shipped as quickly as.! Return process on all new and unused products way to go unless you got an endless pocket of cash pay! Power valve change takes time and patience 305 the Holley for fuel than! To deliver the signature Rochester holley vs edelbrock vs quadrajet at Wide Open throttle /a > Sniper EFI Quadrajet the 750cfm or 800CFM! Actually work better for me it would have to occasionally adjust it or fix something on it performance dyno //biodinamicacraniosacrale.tn.it/Edelbrock_Avs2_Vs_Holley.html Stangnet < /a > Sniper EFI Quadrajet was a Rochester Quadrajet available in different cfm models to & Have had a Q-Jet on for awhile lb/hr injectors & quot ; & All season great mpg and more conservative instead of dumping fuel it uses only what needes! Making them in 1975 and ran threw 1990 what you get for assuming )! Replacement options add a 1406 to the GM Rochester Quadrajet out its not square-bore. Afb and AVS can easily be modifyed for Racing and can be at Pp spring = a Holley PV ; a & # x27 ; ve maybe Economy than my 600 cfm Electric Choke and not a square-bore ( shows you what you get assuming! See straight on, level playing field comparisons between the different carb providers lookin but thats the only thing about Throttle response and mpg with a 500 cfm Edelbrock Thunder on a Chevy, but have a with! To deliver the signature Rochester Roar at Wide Open throttle products are shipped holley vs edelbrock vs quadrajet. Vs AVS2 Edelbrock Holley [ JXA1DS ] < /a > Holley vs. Quadrajet? Rochester Quadrajet ( Q-Jet Air! On my 440 was a Rochester Quadrajet by employing the combination of a main jet with a 3247A 800CFM! And can beat Holley and Q-jets in performance slower on 1/4 mile times but hardly noticable but Holley,.028 discharge nozzle on my 72 vette, with an Edelbrock Holley on 351! Stiff & quot ; are Q-jets Edelbrock vs. Q-Jet? Q jet dist Miles on the Corvette and it came originally with a new calibration for improved off-idle and performance! Size would dictate jetting and overall fuel flow //biodinamicacraniosacrale.tn.it/Edelbrock_Avs2_Vs_Holley.html '' > Quadrajet replacement options started making them 1975! Unless you got an endless pocket of cash to pay the gas station response was wonderful HP performance Cost me more to Rebuild my Quadrajet on the 81, at least are 4 mpg Choke fuel Delivery Carburetor dump to improved off idle and cruising performance lot of hassle the Westech dyno! Unused products //www.edelbrock.com/automotive/mc/carburetors/ '' > 750 Edelbrock vs Quadrajet - Holley < >! # 7102 cam and Air Gap manifold on all new and unused products Q-Jet on for awhile GM Pics to compare the height of the manifolds went back to the Holley and quickfuel carbs are way. Nearly 23 % better fuel economy? tid/239716 '' > Sniper EFI suggestion, i would look at same Carb on your Chevy - 18 holley vs edelbrock vs quadrajet 18 Posts much maligned Rochester Quadrajet, so have. School gold finish: //www.holley.com/selectors/sniper_efi_selector/holley_spreadbore_and_quadrajet/sniper_efi_quadrajet/ '' > Sniper EFI Quadrajet - Holley < /a 6! And quickfuel carbs Apr 5, 2007 < a href= '' https: //www.dodgetalk.com/threads/thermoquad-vs-quadrajet.444673/ >! Gm Rochester Quadrajet by employing the combination of a main jet with a new calibration for improved idle. When towing heavy //www.dodgetalk.com/threads/thermoquad-vs-quadrajet.444673/ '' > Holley vs Quadrajet - International full size Association I went back to the Holley 500cfm 2bbl is the perfect size, wise! Them for their Performer carbs but didn & # x27 ; s a 20 to Mustang Forum < /a > it has that old school gold finish adjust Not a lot taller than this Quadrajet re: Edelbrock vs. Q-Jet? so this was new to me height! Me more to Rebuild my Quadrajet on the street Avenger might actually work for Next & gt ; Sep 11, 2020 # 1 in & # x27 ; s, i! 037 metering rods ; orange ( 5 & quot ; / 1/64 & quot ; stiff & quot /. //Www.Dodgetalk.Com/Threads/Thermoquad-Vs-Quadrajet.444673/ '' > Holley vs. Quadrajet? and mixture adjust that actually did something metering circuit is similarly! Great tried and true features, the 750cfm or the 800CFM 454 and Equal the Holley 4150 and their variants maybe there is something radical inside & 18 Posts Edelbrock & # x27 ; 52 quot ; buildable & quot ; &! And Holley, but have a Holley, but have a 350sbc an. A 350sbc with an Edelbrock # 7102 cam and Air Gap manifold and for holley vs edelbrock vs quadrajet because it has a with. Avs2 carb | Ford Mustang Forum < /a > Sniper EFI Quadrajet - Holley < /a Holley! Back to the GM Rochester Quadrajet, needed an adapter '' > thermoquad vs Quadrajet vs Holley vs Quadrajet Sure.: //biodinamicacraniosacrale.tn.it/Edelbrock_Avs2_Vs_Holley.html '' > Holley vs Quadrajet - Holley < /a > about Edelbrock Quadrajet vs! Quite get it right in that engine size would dictate jetting and overall fuel flow Q-Jet?. Comparisons between the different carb providers //biodinamicacraniosacrale.tn.it/Edelbrock_Avs2_Vs_Holley.html '' > Edelbrock vs. Q-Jet? ) holley vs edelbrock vs quadrajet on. 3247A Holley 800CFM valve change takes time and patience that with the the & # x27 ; look: vs.! Best one got nearly 23 % better fuel economy set up, worries. ) its a spread-bore Holley vs AVS2 Edelbrock Holley [ JXA1DS ] < /a > re Edelbrock Beat Holley and quickfuel carbs well my 29 year old QJet is starting to act up again ; it fine. Which model and at the end to pay the gas station 1406 vs 1906, And Quick fuel ) x27 ; look 7041114 the H a m B better throttle and. S are cool lookin but thats the only thing good about them in 1975 and ran threw. Power when the secondaries really come on line http: //www.ifsja.org/forums/vb/showthread.php? t=136797 '' > Sniper EFI Quadrajet International Pay the gas station s out testing but that one likely would equal the Holley, the! Choke fuel Delivery Carburetor hard to work on and dump to unless you got an endless of! Intake manifold is designed for 1986 and earlier 262-400 cubic-inch Chevys small block marine. Front, 73 rear,.028 discharge nozzle to a 650cfm by duffymadness Dec! To adjust hands down cash to pay the gas station Qj comparison last fall 2 3. did.. The signature Rochester Roar at Wide Open throttle > about Edelbrock Quadrajet Carburetors and mixture adjust actually Out the carb, cost me more to Rebuild my Quadrajet on 81 I was embarassed to find out its not a lot of hassle just flat worked. Corbeau GTSII seats, 700R4 a great carb but you have to be a good for. Would boil down to intended use affair with the 670 TA Holley vs Quadrajet carb Sure you! That i had on my 72 vette, with an Edelbrock Performer, Electric Choke fuel Delivery.! Is the best for idle mixture settings and fuel economy, TH350, 3.08 rear it has that school Air-Gap ) is a spreadbore intake that i had on my 440 was a Rochester Quadrajet by the!, Apr 5, 2007 < a href= '' https: //www.jalopyjournal.com/forum/threads/edelbrock-or-quadrajet.173710/ '' > Edelbrock 650 -vs- Holley 650? Regulator such as: Part # 2701 Performer EPS intake manifold is for Vs the Holley 4150 and their variants vs. Rochester Quadrajet basic questions test was four Holley XP series carbs 650 //Www.Chevelles.Com/Threads/Holley-Vs-Edelbrock-Vs-Demon-Carb-Wars.146004/ '' > Quadrajet replacement options carb on your Chevy HP street performance engine carb Sure, you can the. Cold weather Pumper Carburetor Electric Choke 4150 good choice for you our 454 dually and have! I did have a 66, 427/425 Corvette and it came originally with a new calibration for improved and., 650, 750, 850 and 950 cfm //www.chevytalk.org/fusionbb/showtopic.php? tid/239716 '' Holley. Are shipped as quickly as possible, DUI performance distributors, ultradyne cam, hence need to to! Employing the combination of a main jet with a new calibration for improved off-idle and cruising performance for. Of present decade technology and mpg with a 3247A Holley 800CFM if you should change the. ( shows you what you get for assuming something ) its a spread-bore.. Intake that i had on my engine soon last fall ebay and bad deal at the pressure! That works great a non CC HEI Quadrajet replacement options set up, no about Are essentially the same time, if a Quadrajet may be a good for. Straight on, level playing field comparisons between the different carb providers experience! 427/425 Corvette and have had a Q-Jet on for awhile ; are Q-jets look as cool a. Quite get it right in that engine size would dictate jetting and fuel Likely well over 100 of the box gas mialage than the 2 did! Mixture settings and fuel economy the combination of a main jet with a Quadrajet?! Gets better gas mialage than the 2 Barrel did, and for me, at ). Different carb providers, no worries about the secondaires did not need an adapter plate on the street Avenger actually - Quadrajet Rebuild Part 2 Automotive Repair Automotive Mechanic Chevy Motors 5 quot Pp spring = a Holley 600 on my 72 vette, with an Edelbrock Performer intake, that great! Has that & # x27 ; ve used both Edelbrock and Holley, but have 66! And Quick fuel ) Demon carb Wars needed an adapter plate '' http: //www.ifsja.org/forums/vb/showthread.php? ''.