351M???

[Mark O'Neal]

Originally posted by Daniel Jones


Yup. Before all the fancy SVO blocks were available, Jack Roush's own
Autokraft Cobra was powered by stroked 400 with SVO high port aluminum
Cleveland heads. An old Super Ford article ("The Cobra that Jack built")
gave the details. The article stated Jack wanted a torque monster and a
460 would have been his choice but no aluminum heads for the big block were
available at the time. To keep the weight reasonable, he decided to stroke
a 400 and use Motorsport 351C aluminum high port heads. Using a custom
stroker crank and boring the block 0.030" over, he was able to get 460 cubes
out of the 400 block. Adapter plates and a Motorsport high port intake,
(looked like an Edelbrock A331), were used along with a 780 Holley. The
cam was surprisingly mild, a hydraulic Comp Cams 280 with 0.530" lift (the
article mistakenly states 0.500" lift). Claimed output was 520 HP.

Dan Jones [/b]

Yet the average 427W with a set of AFR's and a middling H/R cam is in the 575 range.

And Jack doesn't have a single Cleveland for sale on his website.

For a semi purist Pantara these things make sense, 351W's just look funny sitting in there.

It's just way less expensive to do a stroker W for the power per dollar.

[COBRA406]

That's it!!! Someone put a nailhead Buick in a cobra so I don't
have the least desirable engine out there. It sure would be
boring to me if everyone had a windsor based or for that matter
an FE in a cobra. Nothing wrong with any of those but we
are talking a budget build. Can understand why professional
engine builders are not interested but how many of us are
professional engine builders. No wait, someone put a flathead
in one. THat would really tilt the deck. WHatever works for the
individual, ay what?

[W2zero]

Hm, maybe you can use my Edelbrock intake and Holley carb for your 351/400 M.

[Lawler]

Here is a link that has good information about the 351M and how is is related to the 351C and 400.

[lovehamr]

"And for heads, the heads that Jon Kaase used to WIN the Engine Masters Challenge bolt right on. The worlds best heads won't bolt onto your windsor, but they will a 400."

Why not? Bore and bolt spacing are the same. If this is so then I'd better go yank the 4V Cleveland heads off of my Windsor block that I've had running for the last 14 years!

Steve

[RedSnake351]

Originally Posted by Lawler

Here is a link that has good information about the 351M and how is is related to the 351C and 400.

Where is the link?
Ralph

[Lawler]

Hmmm. Sorry.


http://www.world-net.net/users/rodne...landblock.html