Y block timing pointer
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Mountain Pass
Joined: Jul 2015
Posts: 225
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600cfm is definitely more than a stock 272 needs. Holley offer a 390 and 465. The carburetors that would have come with the 4v manifold are around 390 so 390 will be sufficient but 465 will be good if other bolt on mods might be applied. Either is still probably more than the 272 actually needs.
Another good one could be the Summit 500 carb. While it is more than needed, it has adjustable air bleeds which means that it should be able to be tuned very well for the engine. This is a feature that is not typically found in lower end carburetors and makes it suitable for a wider range of performance than a typical carburetor without adjustable air bleeds.
Another good one could be the Summit 500 carb. While it is more than needed, it has adjustable air bleeds which means that it should be able to be tuned very well for the engine. This is a feature that is not typically found in lower end carburetors and makes it suitable for a wider range of performance than a typical carburetor without adjustable air bleeds.
ones strange deal....found mark on damper for timing....got timing set on 9 degrees initial runs good
hope it stays that way. Getting where we need to be thank goodness.
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