Everyday Performance Buick Qjet

[tobyp]

Just had it rebuilt, so Pretty I thought I'd do some advertisement for him. It runs like a scalded dog too!

 

[dogsht]

Looks nice. 750 or 800 cfm? A lot of people seem to want the 76 electric choke Cadillacs & Buick Q-jets. They don't look as race as a square bore but its so nice to be able to set it & forget it and they drive better and get better mileage. A lot of people don't know that except for small displacement motors with cams that exceed 240 @ 50 duration you generally only lose about 5 HP at WOT to about 500HP. Naturally that is having both carberators tuned for the engine which does require a steeper learning curve or a pro for the Q-jet.

 

[tobyp]

Yea. u pegged it. it is 800cfm from 1976 Buick.

 

[RegalBegal]

Hmmmmm. looks familiar.

 

[RITTER]

Very nice :!:

I would love to run a Quadrajet someday, if I stick with a carbureted setup. The spreadbore design is an amazing design

I currectly have a couple of HOLLEY 650cfm spreadbore carburetors that I plan on messing with

 

[G-Body_Vet]

I'm eagerly awaiting the time to rebuild mine too, but since the engine isn't even done.....

FWIW, this is an outstanding book if you want go beyond a basic rebuild. It has a ton of good info too.

 

[pontiacgp]

Yea. u pegged it. it is 800cfm from 1976 Buick.

it's impossible to tell until you open the air valve of the primaries to see if it's a 750 or 800. The 800 has a bulge on the wall and the booster ring is thinner....

 

[RITTER]

Are all Rochester Quadrajets either 750 or 800cfm :?:

 

[pontiacgp]

Are all Rochester Quadrajets either 750 or 800cfm :?:

yes

 

[Bonnewagon]

This one is great too. Dated, but so is the Q-jet.