Quote:
Originally Posted by mgarblik
We can see the benefit of the 30 degree intake seat even when applied incorrectly to the E heads. The factory, with the much smaller ports, smaller throat and max lift of .407 would probably be better than a 45 degree most of the way to .400 lift. But what made sense in a stock head clearly doesn't when the lift increases and the port gets larger as proof from your re-work and the huge flow improvements above .200 lift. With the slow opening factory cams, they spent allot of time below .250 lift and the 30 degree seat worked. Sounds like an "old school" owner or shop worked on these first and assumed Edelbrock didn't know what they were doing with the 45 degree seat. For engines with .800 to 1" valve lift, I like playing with 50-52 degree seats. Helps on some, not on others. Your seats look nice. Serdi machine, Sunnen?
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X2 on the "Old School Owner/Shop"
X3 on Pontiac knew what they were doing with the head and valve angles for THEIR street applications.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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