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Old 02-09-2013, 01:01 PM
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Originally Posted by pilona42 View Post
I did set them dot to dot. I even double checked it yesterday. So a hissing sound coming up through the intake is normal?
You are likely hearing it leak past the piston rings. If the cranking compression is 150 its good.

On a stock OEM cam the intake is not fully closed until 40deg ABDC +/- The piston is approx 1/3 past BDC

The bigger the cam the later the intake closes (generally)

Did you verify accurate timing tab TDC location, using a piston stop to find true TDC?
often a issue with non stock aftermarket parts. inaccurate timing setting is the result.

what cam?

Last edited by F-BIRD'88; 02-09-2013 at 01:06 PM.
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