Quote:
Originally Posted by JaredOSU
Do the gt40 heads need different valves or cam to operate correctly? How about the exhaust?
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All existing parts should work. Just drill out the head bolt holes, bolt the cylinder heads on, check lifter preload if within specs put valve covers on and call it a day and enjoy your new found 20-30 hp. If you want the heads to operate more smoothly you should replace the intake manifold and if you want more hp replace the camshaft although replacing the camshaft can open a can of worms. Lots of threads on here already about different guys using different parts to achieve more hp and torque...