Author Topic: Which quadrajet  (Read 678 times)

Offline Photokinetics

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Re: Which quadrajet
« Reply #15 on: September 02, 2025, 02:48:37 PM »
My son is the one that put the camshaft in and the only thing he remembers is that it had 600 lift. He said it's a little stronger than a RV cam.

Online 77cruiser

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Re: Which quadrajet
« Reply #16 on: September 02, 2025, 06:14:00 PM »
Lift don't mean much it's the duration & overlap.
Jim

Offline Photokinetics

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Re: Which quadrajet
« Reply #17 on: September 03, 2025, 11:32:39 AM »
The carburetor I have says it's off of The 1975 Buick 455 so it should be jetted for a big engine perhaps I can take the parts out of that carb and put it into the Chevy carb after rebuild and that would be a good starting point?

Offline Kenth

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Re: Which quadrajet
« Reply #18 on: September 04, 2025, 12:40:46 AM »
Your 1976 17056540 Buick 455 California carb should have #75 jets, 49K pri. rods and DB sec. rods.

Your 1979 17059222 Chevy 305 carb should have #71 jets, 40K pri. rods and CH sec. rods.

Since your Chevy carb has the large .120" main air bleeds you can go with the jetting from the Buick carb for your 454. You may find you´ll need larger jets, like #78-#79 after test drive.
Use the CH rods for starters. Later on look for DA, CE or AX sec. rods.
Cut the stop for airvalves to have full flow, aim for 1.37" measured from open valves to back of chokeblade housing.
Transfer choke blade and shaft from the Buick carb for a functional choke on your Chevy carb.

HTH

Offline Cliff Ruggles

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Re: Which quadrajet
« Reply #19 on: September 04, 2025, 01:00:51 AM »
Either one of those would work fine.  The Chevy is going to be a little easier to use having a side fuel inlet and Chevy throttle linkage. 

They will need a little help in a few areas for what you are doing.  When you are ready to proceed call me at the shop, 740-397-2921...tks..

Offline Photokinetics

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Re: Which quadrajet
« Reply #20 on: September 04, 2025, 08:28:22 AM »
Thank you for your replies and the information! I bought Cliff's book over 13 years ago and have rebuilt a couple of carbs using it,  I have spare carburetor parts somewhere in a box, but since  serious Life changes I haven't been able to do what I like to do, so I'm pretty excited to do another carburetor and to tune it to make another engine very happy! It's been a slow process but I find I need to build another workbench! 😎