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400 or 351M

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Old Mar 4, 2004 | 11:17 AM
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jmalecek's Avatar
jmalecek
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From: Jasper, GA
400 or 351M

Hey guys, last night I pulled the 400 to make way for the 351W Does the 400 and 351m have any markings to tell which one it is...the valve covers say its a 400....but...the covers look like they were recently bought from a scrap yard, much nicer than the rest of the engine. Just curious.

Jamie
 
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Old Mar 4, 2004 | 11:28 AM
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grclark351
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From: chicago burbs
fastest, easiest way to tell is to drop the oil pan and find the crank casting code on the first counterweight. 1K is a 351M, 5M(A)(AB) is a 400, 4M(A)(AB) is a cleveland
 
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