Quote:
Originally Posted by bubba428
stock...91-99 the valve stayed the same size..but for 2000 the increase valve size by a decen amount...and all the 60V6 heads are interchangable, so 2000+ one happen to be the best...a P&P would only yeild a 3hp gain and 1ft/lb torque...so its not worth it to get it done
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well, 94-99 3100 and 3400 heads and intakes were different, all 2000+ 3100 heads/intakes were upped to the same sizes as the earlier 3400 parts. The Gen III parts weren't used until 94.
A P&P wouldn't be worth a whole lot on an otherwise stock engine (although certainly more than the numbers you listed, if they were done right). But if you are talking about aftermarket cam, with intake and exhaust mods, then it would certainly be worth it.
- Justin