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Tony Curcio · 10-25-2007, 07:31 PM

The white wagon was a Pure Stocker, the indexes for which are a full second slower than the NHRA Stock indexes. If they entered a Pure Stocker in an NHRA race and ran under the index at all, they were doing quite well.

Among the differences: the Pure Stock cam must check for stock duration and overlap; the stock 80 lb. valve springs must be used; no filled blocks; as well as the OEM type belt-driven water pump, original large pulleys, and steel fan. All of this stuff severely limits the peak rpm and horsepower.

10-25-2007, 07:31 PM	#12
Tony Curcio Member Join Date: Mar 2002 Location: West Chester, PA Posts: 271 Likes: 1 Liked 4 Times in 1 Post	Re: Been Lurking, now ready to ask. The white wagon was a Pure Stocker, the indexes for which are a full second slower than the NHRA Stock indexes. If they entered a Pure Stocker in an NHRA race and ran under the index at all, they were doing quite well. Among the differences: the Pure Stock cam must check for stock duration and overlap; the stock 80 lb. valve springs must be used; no filled blocks; as well as the OEM type belt-driven water pump, original large pulleys, and steel fan. All of this stuff severely limits the peak rpm and horsepower. __________________ Tony Curcio 1860 STK