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Author Topic:   351c/ 351m
sic67coug
Gearhead

Posts: 189
From: clearlake california
Registered: Dec 2002

posted 10-06-2003 04:02 PM     Click Here to See the Profile for sic67coug   Click Here to Email sic67coug     Edit/Delete Message   Reply w/Quote
id like to know how many parts are interchangable between the cleveland and the M block? will the internal components from the cleveland fit in the M?

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kid vishus
Gearhead

Posts: 6098
From: middle of NC
Registered: Oct 2000

posted 10-06-2003 04:26 PM     Click Here to See the Profile for kid vishus   Click Here to Email kid vishus     Edit/Delete Message   Reply w/Quote
Don't hold me to this, but there isn't a lot between the 2 of them that is interchange-able. The heads will, as will the valvetrain components, and the distributor. But other than that, not much. The 'M' is based on the 400 block which is taller than the cleveland, and not on a cleveland block. Therefore the rotating assembly is different, by quite a bit. The rods/piston combo is too long, and it requires machine work to make the crank fit.

They might be from the same family, but not much interchanges.

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68DARKHORSE
Gearhead

Posts: 422
From: Austin, Tx
Registered: Aug 2002

posted 10-06-2003 05:01 PM     Click Here to See the Profile for 68DARKHORSE   Click Here to Email 68DARKHORSE     Edit/Delete Message   Reply w/Quote
The M also uses a big block bell housing.

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Kellxr7
Gearhead

Posts: 643
From: Canada
Registered: Mar 2003

posted 10-06-2003 08:37 PM     Click Here to See the Profile for Kellxr7   Click Here to Email Kellxr7     Edit/Delete Message   Reply w/Quote
Heyyy, so if Cleveland & M can interchange, What if I put the M heads on my 302, could be like a Boss302? Or do the M heads suck? I know at the farm we have a F100 with a 351M & unfortunately that truck is gutless, (runs good though &, has over 500.000 with not a single problem proud to say )

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