Re: Thunderbolt engine
Posted by BigKev On 2008/9/9 0:07:25
Bob,
I have a '54 327, with a "288 AT" head on it. The "288 AT" Head gave the highest compression when compared to the "288 STD/327 AT", or the "327 STD" heads, and was often swapped onto the 327 motors. BTW my 288 AT does not have the "Thunderbolt" on it either. So I wonder if the ones without the "Thunderbolt" were service replacement heads.
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