Hey Guys at TA, I recently had my 350 built at Grimes Automotive. The intake package was purchased and included an Edlebrock carb. Is there any advantage of this carb over the QJet I already have? (7044244) from a 74 Century wagon.. Did you do anything special to this Edlebrock or is it off the shelf? I was prepared to have the QJet rebuilt for this engine but did not get to make the choice at the time. For now, I will go with this carb and probably rebuild the QJet anyway for future use. From reading other posts, most members prefer the QJet. If there are others using the Edlebrock, what is your opinion of it? It will be late in the year before I get the engine in the car so I would like to know more about this configuration. Thanks for your input!
Well dad's 70 455 has an Edelbrock carb and it's great he loves it. My 70 455 has a Rochester and it's great but it's been rebuilt but I don't know who did it the original owner had it done. So I guess it's what you like. My car is stock also dad's car is a custom build so the polished carb looks good even though the air cleaner hides it. Dad's Edelbrock is off the shelf too
Thanks for the input OHC JOE. I have never used an Edlebrock in the past. It has always been the QJet or Holley (70 Torino 351C). I am curious about MPG and HP comparisons. I have heard that the 350 likes cfm in the 750+ range. My QJet was rebuilt back in the 80s with oversized jets and wow, what a difference. MPG was not great.. maybe 14 or 15 if I kept my foot light. My 350 was built this time for more of the weekend warrior/cruiser. Specs are in Members Rides.. I came close to going with the 455 but that would have required several other changes and I really just want to get back on the road.
I have an 850 edlebrock on my gs 455. It rips. 10 years no problems whatsoever. Love it. Bolt on and go. Q jets great but 50 yr old castings always leak and throttle shafts always worn and rebuilds get pricy if done right. Edlebrock cheap simple bolt and go.
All my older cars I run Edelbrock. My 68 Pontiac with a six cylinder has a 500 cfm on it. My El Camino had a 350 Edelbrock 650 cfm My impala has a 327 Edelbrock just recently did an EFI swap just because I got a killer deal on it. All my cars in the past Edelbrock. Never had any issues.
Agree with 72 stage1, but....I believe the Edlebrock is a square bore and the Qjet is a spread bore. Then the manifold you got in the "package" must be a square bore, so use the Edlebrock. To change to the Qjet you'd have to change the intake. Also, many builders will recommend a smaller (CFM) Edlebrock which is what a chevy likes...most Buick Qjets are larger and a built SBB can use more CFM then a chevy 350, so it also depends on the build.
I have the TA 1235P and it is a spreadbore. The kit includes an adapter for the Edlebrock. I should be able to swap if I decide. I'll check out that book mentioned by 72 stage 1. I really wanted to hear from TA about the Edlebrock. It would be nice to have an explanation when someone asks "where's your quad?" That's why I started this thread in their section. I didn't get a response in member's rides. Thank you all for your input!
Adapters seem to me to always be a compromise. The airflow gets messed up at the transition. Given that you have the right manifold I would definitely get a Qjet rebuilt by one of the guys on here and put that on. The 7044244 is a 800CFM carb more suited for a 455, and 74 had some emissions, so research it's use on your 350. What I am saying is that there might be a better choice for a Qjet for your application, so ask a carb builder from this board.
I ran a 750 cfm on my 455 deep into the 12s, same carb is now on my brother gs400, have owned it for almost 20 years with no major issues. also have used them on many sbc, bbc, and olds builds
I can understand what you are saying about the airflow. That leaves another question to TA on why they would pair this carb with their intake. If they have done something special with the carb to make it the ideal set, I would like to know what that is. 800? I didn't know that. Of course there is a lot I do not know about carbs. I can tell you that it made a huge difference on the 350 when it was built in the 80s. I was outrunning other cars when I thought there was no way- mustangs with 302, chevelles with 350-4, GTO. Yes, I got beat a few times too but it was an amazing difference. I would like to hear from those on the board that build the Qjet. If I have the wrong Qjet, maybe a trade is in the future. Thanks for the info!!
I think this one is a 600. I'm sure Edlebrock is a good carb. I am just not sure if it is the best for my build. I may not know unless I swap to the Qjet and compare Maybe TA will chime in soon and we will all be enlightened. Of course, I could just call them but I thought others might like to get in on this line of questions. Thanks for your reply!
a 600/650cfm should be a nice size, that's the size I use on alot of sbc. I have not used one of the new avs carbs. we put a 600 electric choke onto a 383 with 425 hp, 700r4 with 3.73 gears in a 51 chevy coupe, was very responsive, didbt need any jetting adjusted and on his cruise highway speeds it would net just under 20 mpg, but at the strip would still run solid 12s with a set of m&hs
Some good info here on Qjet: https://www.rodauthority.com/tech-s...e-your-quadrajet-number-identification-guide/
In my teens and twenties, it was hard to keep my foot out of that Qjet. I don't really know if I could have got close to 20 mpg. IF this Edlebrock does the same for me, it just might be a keeper. It will be a while before I really find out. You can see my build status on members rides... thanks!
According to Cliff, the Qjet was the BEST dual purpose carb ever designed, for economy and performance.
