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~The Jester~ · 11-02-2005, 03:26 PM

Need more than casting codes to tell.

If it's got a "big block" (BTW, Ford never built a "big block" that was Shivvy) bellhousing pattern, it's definitely a 351M/400/351 Cleveland. Since they didn't put Cleveland's in a 78 cougar, and 62% had a 351M and only 5% had a 400, I'd bet money it was a 351M.

To know FOR SURE, tear it apart and measure the crank throw. That's the only way to tell for sure.

11-02-2005, 03:26 PM	#7
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: Tryin To Figure Out What Motor I Have Need more than casting codes to tell. If it's got a "big block" (BTW, Ford never built a "big block" that was Shivvy) bellhousing pattern, it's definitely a 351M/400/351 Cleveland. Since they didn't put Cleveland's in a 78 cougar, and 62% had a 351M and only 5% had a 400, I'd bet money it was a 351M. To know FOR SURE, tear it apart and measure the crank throw. That's the only way to tell for sure. __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....