Why not either copy a GMPP 383 setup or just buy one? For simple money, you can have 425 horsepower IN A KNOWN package...not some hodge-podge combination

http://www.sallee-chevrolet.com/Chev.../ZZ383-425.cfm

Simple motor, simple parts, available everywhere, GM already did the longevity testing, etc. A bunch better than finding that the cam you bought in the local park was the wrong one!

mike in tucson