Quote:
	
	
		| Originally posted by PKRWUD The 351M is a Cleveland 400 block with a 351W crank.
 
 Junk engines.
 
 Take care,
 ÅChris
 | 
	
 Chris while we're on the subject ... what is it about the M motor that makes it so unsuitable for Hi Po aplications ?? i've been told they are a 100 times by a 100 different people but never told why ? Bad blocks, bad oiling, bad cooling what ?