Where did I go wrong?
05-01-2008, 12:03 AM
#11
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Is that the timing you wanted and were commanding on the high/lo timing tabel? The only way to know whats wrong is to pull the head or use a scope to look inside. With that 7psi boost and 29* of advance is a lot of cylinder pressure and it broke the piston hence the knock you now have.
Last edited by MFIC; 05-01-2008 at 12:12 AM.
05-01-2008, 01:06 AM
#13
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Is that the timing you wanted and were commanding on the high/lo timing tabel? The only way to know whats wrong is to pull the head or use a scope to look inside. With that 7psi boost and 29* of advance is a lot of cylinder pressure and it broke the piston hence the knock you now have.
Last edited by t_thall; 05-01-2008 at 08:42 AM.
05-01-2008, 08:54 AM
#15
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Is the stock truck intake a problem? Should i be looking into a different intake when i do a rebuild? What else do you guys think? I was thinking some good pistons, a mild cam, and some hardened pushrods. Or maybe just drop in a used 6L?
05-01-2008, 09:25 AM
#16
05-01-2008, 09:26 AM
#17
How do I change this text
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The LQ4 pistons seam to hold up a bit better, but push them too far and you will be right back were you are now... look at my avatar, those are LQ4 ring lands...
05-01-2008, 10:36 AM
#19
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I think he was refering to stock manifold FI (ie, turbo, cent blower etc) Radix uses a different manifold and is a little better than the stock manifold when it comes to #7.