09-08-2021, 03:29 PM
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#67
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Senior Member
Join Date: Apr 2020
Location: Phila, PA
Posts: 795
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Re: Pontiacs
Quote:
Originally Posted by oldskool
With that big chamber, I'd think NHRA would have to lower the hp numbers considerably, in order to make those engines competitive.
Considering the chamber size reduction NHRA allows for many other Pontiac engines, that 121.51 number is NOT very generous. Most sources list the factory chmaber size to be only about 124cc. So, NHRA is allowing only a VERY small reduction.
IMO, NHRA should either allow smaller chambers or reduce the hp factor. Unless they do one or the other, it's not likely anybody would ever choose to run this engine in either Stock or SS. But, the chances of getting NHRA to to that are probably slim to none.
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Doesn't NHRA like other engine specs use the Chamber Volume supplied by Pontiac?
Stan
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