Hello everyone, I have a question regarding carburetor choice for my engine. Its a 73 455 block with a comp cams 268H cam, ported stage 1 heads, shorty headers, 2.5 flowmaster exhaust with x pipe, edelbrock aluminum intake and an edelbrock 750 performer carb. I have a nice q-jet off of an 72 455 and I was wondering if this carb would boost performance any. At the rear wheel dyno, with a 2004r automatic in the car it put down 334HP and 444lb.ft of torque. The car runs great, but I'm wondering if switching to the q-jet would boost performance over the edelbrock? Any opinions? Also, I'm swapping in a new Tremec 600 trans, so the engine should perk up a bit on the dyno as there will be no loss through the torque converter. Thanks, Bob
Bob, I"m interested in hearing of your opinion on the 2004r tranny behind the BB. I was thinking of doing just the same thing in my Riviera. pro's/con's???? Did you have to have it built up to handle the torque like I've heard you have to do? Kelly
If it's an 800 CFM Q-jet I'd bet on it being better. We know from experience that a 455 performs more with an 800 Q-jet than a 750 Q-jet, and that the Edelbrock Q is very similar to the Rochester Q (Same castings IIRC?). Anyhow, with that in mind I'd say that if the 800 Q jet was setup properly it should outperform the 750 Edel.
Hey Bob, I really really want to know about your 2004r conversion ( cost, driveabliltiy, durability behind the BBB, lower first gear....is it noticeable? Did you need a different torque converter? etc HEEELLLLPPPPPP.......okay, I'm better now
