It's time for an engine rebuild

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toms89

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Post pictures of where the "upgraded pushrods" mentioned in post #6 got installed.

Of course there are no pushrods in an overhead cam motor. :)

Maybe "rods" was the intent.

Stock cracked powdered metal piston rods are the weak link in these modular motors but they are fine up to 400 hp plus.

@ dj

Cams with more "overlap" will build more high rpm power but low rpm torque and idle quality will suffer.... not to mention emissions. This definitely requires changes in the tune and rear gear ratio at the minimum. Higher rpm cams are not ideal in a heavy street truck or suv where low rpm torque is critical. That said your cam choice should be good.

Any additional power you get (over stock) will come primarily from your head work, cams and increased compression.

Not sure if it was mentioned or not but I would shy away from any tuners with a "canned" tune. I say this because most canned tunes increase power through more ignition advance as well as changes in fuel. The factory leaves some room on the table for safety as far as ignition timing and the tuners take advantage of this....... but with your higher compression you really do not want any more ignition advance. You may even end up having to reduce it through custom tune or run higher grade fuel. Its a small enough increase in compression I would say it is yet to be determined.
 
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LameSuburbanDad

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Well it has been a long time coming, but my engine is very near completion. I have some pictures for your guys, and will have more once the engine is ready to come off the stand. enjoy.

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