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Old 09-25-2021, 08:46 PM   #7
Mike Gray
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Default Re: '67 Shelby slow build

Quote:
Originally Posted by FireSale View Post
Are we looking at a Stocker? I can find 355 and 390 hp ratings for the 428, but not the 388 you mention. Is this the large or small valve version? There is a 385 and a 395 hp in the SS factor list, though.
428 355hp large valve after market head auto, stock rated at 388, super stock is 385.

Last edited by Mike Gray; 09-25-2021 at 08:53 PM.
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