Quote:
Originally Posted by DOC
Now is the time to spin it over with just the starter and use a mechanics stethoscope to pinpoint noise. Just be careful to not drop anything down there. Also, As it is turning over, feel each push rod, do you feel the noise? Touch areas between the push rods on the block and see if you feel the noise.
Look for any witness marks, however slight from the bars on the roller lifters especially the most rear ones and make sure they are not touching the block as it goes through the whole crank rotation. Hard to tell in the pic, But does #7 exhaust lifter bar look close to the block?
Otherwise, I do not see anything standing out. Looks good in there.
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I do see that tie bar is close. They are thinking the noise is near the distributor. It would take 20 minutes to have that intake off and valley pan. Then crank it over and feel those pushrods and look that tie bar over.
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1968 Firebird 400 RAII M21, 3.31 12 bolt, Mayfair Maize.
1977 Trans Am W72 400, TH350, 3.23 T Top
Everyone you will ever meet knows something you don't.
Bill Nye.
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