Q-jet overhaul

Rochester Quadrajet parts description and overhaul discussion

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1969 Firebird - 11 second pass
1969 Firebird 400 - standard build Pontiac 455, TRW pistons, 10:1 compression, hydraulic cam, 2400 stall converter, 3.42 gears, street tires (trim rings pulled for racing), Quadrajet carb, full Exhaust system, no traction bars (leaf springs clamped), and no Nitrous. Final pass (back in 1998) was 11.69 @ 116 mph.





How to measure and adjust Quadrajet float level
I have had several requests for this, so here you go: 1. The airhorn has to be removed to do this, but the carburetor does not have to be removed from the engine. 2. Some data says to measure from the toe(end that is opposite from the hinge), some say 5/16 inward from the end, etc. I suggest following the specs for your particular carburetor. 3. With the float in the raised position and the inlet needle lightly seated, measure from the top of the float to the top edge of the carburetor with NO gasket in place. If you have to adjust the float, bend at the area that has the cutouts, 4, If you are experiencing flooding issues then it is an excellent time to install a new needle/seat and float and that should cure flooding problems that are not choke-related.





1968 Chevelle 300 Deluxe Burnout 3 327 L-79
This is another video of my 1968 Chevelle 300 Deluxe doing a holeshot.Lets just to refresh your memory a bit, she has an (L-79)327 This is another video of my 1968 Chevelle 300 Deluxe doing a holeshot.Lets just to refresh your memory a bit, she has an (L-79)327 325h.p engine with a 4 speed transmission, with a 12 bolt posi 4.11 gear rear end she runs excellent in these videos we had a quadrajet 650 carburetor then after we put a practically new quadrajet 750 on it and believe me she runs a lot better now i need new videos to see how she runs with the new carb





First start cutlass olds 350 rocket
starting my 350 rocket cutlass, 9" limited slip rear end(waiting to be puton) 740r tranny, rochester quadrajet 4 brl carb




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