My engine is brand new rebuild with TRW forged pistons dished to reduce compression ratio to around 9.5 to 1, all balanced. Im using #16 heads with ss valves, running an 068 blue print cam. everything was machined by a knowlegable potntiac machinist. Only thing i didnt do was zero deck . decks were clean up cut .010 as was the heads. Im also using a performer rpm intake with a qjet, and headman headers into 2.5 inch pipe to flow master 40's with h pipe.

I'll try retarding the timing some, i dont hear any detination, but that doesnt mean its not happening. im at 10 degrees BTDC.