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Old 12-27-2012, 03:39 PM   #247
manitou
Scooby Specialist
 
Member#: 193757
Join Date: Nov 2008
Chapter/Region: MWSOC
Location: Cedar, MI HP Techs MPS-SSLR2.5
Vehicle:
2006 XTI Limited
OBP, Junior tuned 573WHP

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Quote:
Originally Posted by Maxwell Power View Post

that depends on your head builder. What springs are you running? I would think that R-199-B cams with any dual spring or GSC beehive would be good to at LEAST 8k. Your boost level will affect your redline as well. The funny thing about boost:
the more you run the higher you can rev the bottom end.
the more you run the less you can rev the top end.
All Supertech valve train w/ dual springs. Junior had boost at 21 psi/ 93 & 26 psi/ E85.

Good to 8k?

I went with D25s for the OB response and torque vs. higher revs of the B25 heads. My heads do breath very well!
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Last edited by manitou; 12-27-2012 at 03:46 PM.
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