Quote:
Originally Posted by WildBillyT
I don't think factory 305 heads flow that great. Maybe some World S/R Torquer 305s?
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I had the S/R Torquer 305s on my old Monte - they're basically a cast iron version of the L98 58cc Corvette head. The first motor we built was a stock '87 LB9 bottom end with a Crane 2031 Compucam (.438/.452 lift) and those heads and it made 223 hp and 277 ft. lbs. at the wheels on a lean factory tune.
The World heads will also handle a ZZ4 cam, because the second motor I built was an L98 with the same heads and a ZZ4 cam. The car ran great and made plenty of power with just a 52mm throttlebody, ported plenum and aftermarket runners.