SIIaCanuck
New Member
Hey gang, looking for some thoughts on compression for a 331 build. I only have 87 octane locally, with the nearest 89 or 91 being 20 miles away so I'd like to be able to use 87 in a pinch, even if I have to pull timing a bit.
Spec:
Thumper ported GT40p heads (230/195ish cfm @0.500")
GT40 intake (ported lower)
Lunati 51014 cam (218/226, 0.500"/0.510", LSA/ICL 112/108)
CAI, 90mm MAF, 75mm TB, 24# injectors
Shorty headers, 2.5 X-pipe/cat-back (Borla)
Would 9.5:1 be too high for iron heads or should I stick to 9:1 ish?
What tuner would you recommend? The stock ECU probably won't help me much, so I'm considering an Anderson Motorsports PMS or Tweecer but would like some more advice.
Stew
Spec:
Thumper ported GT40p heads (230/195ish cfm @0.500")
GT40 intake (ported lower)
Lunati 51014 cam (218/226, 0.500"/0.510", LSA/ICL 112/108)
CAI, 90mm MAF, 75mm TB, 24# injectors
Shorty headers, 2.5 X-pipe/cat-back (Borla)
Would 9.5:1 be too high for iron heads or should I stick to 9:1 ish?
What tuner would you recommend? The stock ECU probably won't help me much, so I'm considering an Anderson Motorsports PMS or Tweecer but would like some more advice.
Stew