Quote:
Originally Posted by JANNETTYRACING
The Stock manifolds and cats would be the limiter here, not so much to making the power but engine longevity due to head retention.
Long Tube headers with High flow cats are strongly recommended for this power level.
Same power can be made with lower boost and cooler EGT.
This power level would only be (SAFELY) achievable on either 98 octane or Flex fuel of at least 40% E content.
600 RWHP is pushing the limits on pump gasoline E-10
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So just to use random numbers, with factory manifolds/cats you might need 10psi boost for 650 rwhp, with LT headers and high flow cats you might be able to achieve the same 650 rwhp with 8 psi ? Which of course would help with engine life. Are PD blowers "harder" on the engine than a centri due to always having more boost down low ?
Overall, at ~650 rwhp , would 98-100 octane race fuel, or E40+ make for a safer long lasting engine ?