Cliff's Quadrajet Parts and Rebuild Kits
Quadrajet Problem Solving => Quadrajet Parts and Numbers => Topic started by: 4SPEED76 on July 27, 2017, 11:00:16 AM
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I have a few different Q-Jets laying around and I am trying to decide what one to build. One is for sure an 800CFM and the part number is 17086249 non electric carb, and the others are 750CFM carbs. I would like to know if the 800 would be a bit too large for my engine. Here is the engine specs.
350 4 bolt bored .030 over
Hyper flat top pistons with 2 valve reliefs
9.87:1 compression
Edelbrock easy street 64cc chambers, 2.02/1.60 valves
Edelbrock 2601 intake manifold
Comp Cams ultra pro magnum rockers
Comp cams 280H cam
Hooker competition full length headers.
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I have cliffs bible on Q-Jets, and would like to know what rebuild kit I should buy and what recipe would work best with my combo. Thanks for any input
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Is that a performance cam? Or mild cam? I think recipe #2 would be a good starting point. I would also go with Cliff's HP kit. Comes with everything except for choke pull-off and metering rods/jets.
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As I have come to understand it, one of the great things about the Quadrajet design, is that there's no such thing as too much carb;
the "800cfm" castings were used on a variety of engine combinations - many of which, when conventional logic is used, would indicat that 800cfm is too much.
IIRC the spread bore design essentially feeds as much as you need.
I would use the best core carb you have as the basis of your carb.
But that's as far as my opinion goes... :)
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Pretty "hefty" cam for the little 350 engine. Expect low vacuum at idle, stinky exhaust and lacking power below about 3000rpms.
You will need a LOT of idle fuel and bypass air for that combination. Hopefully it's for a street/strip car with a lot of gear and converter......Cliff