General Category > Quadrajet Carb Talk and Tips

Best base plate for a 17057274 800 cfm q-jet??

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Mr.Pontiac:
After some research, i see this carb. had hidden idle screws . My carb. giving to me has no base plate. Is there another yr. i can swap on the body for better maintance and performance to make it come alive?? Strictly for a drag car.

Frank400:
Not sure I understand your question, but your cab, 17057274 does not have "hidden" idle screws as you say, as this is a 79 and up deal only, and yours is a 77, with still 10-32 idle screws.

Mr.Pontiac:
Frank, my 17057274 carb. has no base plate, I have seen on the internet that it had the hidden screws under the caps. Can i go 1 yr. newer on a baseplate and make it work???

Cliff Ruggles:
Incorrect.  The hidden screws were first used on the 17059263 Pontiac 400 4 speed carburetor.

The 17057274 didn't use them and only uses two screws to hold the baseplate to the main casting, the later one uses 3......Cliff

Frank400:
7043308 is the casting number on a 17057274 baseplate.

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