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12a build questions?

Old 06-16-07, 06:45 AM
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12a build questions?

ok so my engine in my 82 s has a dowel pin leak and im planning o fa rebuild, but this is my question. Is it possible to build a NA 12a up to about 160 RWHP? what is the estimated cost? what parts will i need? i would love to remain stock port if possible, but im willing to compromise if need be.
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Old 06-16-07, 10:41 AM
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to get there without forced induction of some sort, you're going to have to do some porting. period.
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Old 06-16-07, 11:27 AM
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My stock 12a with RB intake, RB Holley, RB road race Exhaust, put down 125rwhp and 101ftb of torque. That's a long from 160rwhp, without porting I just don't see it. But I would love to see it done
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Old 06-17-07, 07:00 PM
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The bottom line is I dont think anybody goes for more power without porting. It's just too easy. I'm sure if you lightened the e-shaft and rotors to their bare minimum, used Japanese irons (assuming thats where the extra power they make comes from), run a big Weber, hot ignition, and 3" exhaust with a good header you could get to 150, but I think thats probably about the highest "realistic" number.

...Unless you're talking about crankshaft, then I think its easy! My Spec7's make over 130 at the rear wheels (corrected) with all "stock" parts.
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