Octane for 525 sc's
#12
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Join Date: Nov 2000
Location: LOTO
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I run 91 or 93 With 8.5 comp with alu heads no tstats with crossovers more cam 5psi boost 3500 to 6000 rpm to get it up cat with hi X! Ok so far keep the timing to 36 max and the temps low oil and water oil temp will come up at wot limit mine to around 250.