
- Power Mods Milling Heads
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old school
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GT-40 Heads
Brock,
Don't waste the time or money on 1/2-1pt on Compression as it is only about 4% increase for each point below 12 on a normal V-8. You would be better off getting a 5-7 angle Serdi valve job, de-shrouding your combustion chamber around your intake valve and bowl blending the heads to increase the low-lift airflow. This work should easily net you 50-100 RWHP depending on the quality of the work.
With todays crappy fuel, 50 year old head designs, and most stock ignition systems street cars should stay in the 9.0 - 10.5 compression range unless serious attention is paid to the intake and exhaust systems and the fuel injection mapping and ignition system.
Honda's get by because they have very advanced engine management systems and the fuel is very close to direct injected, and the head designs are very good. Only thing I have seen that is close is the Chevy ecotec. We will be starting a development program on the engine next month and should be ready for street / track testing mid-Summer.
Good Luck,
DM14

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