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Discussion Starter #1
So I'm a little confused, hope you all can clear up a question.

I'm putting a 78 460 (from a 78 Econoline Van) in to my 79 Bronco. Bronco currently has a 351M & C6 in it now. Some say I "may" have to swap input shafts but I thought the 460 was a direct bolt in for the 351M, you just have to use the converter and flexplate from the 460.

Am I off base here?

Thanks!
 

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If you have the correct motor mounts it's a bolt in deal.
 

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your are way off base C6 is a easy straight forward swap

you can even use the 351M convertor as the 460 has the second step drilled out for the convertor pilot early 429 cranks did not have the second step drilled

follow this http://www.ncspecialties.com/autobody/460/index.htm
 

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Other then the early crank pilot holes being smaller you should be able to just bolt it up with the right motor mounts.

We ran into the small pilot hole on my buddys 460. Never knew there was 2 different sizes.
 

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Other then the early crank pilot holes being smaller you should be able to just bolt it up with the right motor mounts.

We ran into the small pilot hole on my buddys 460. Never knew there was 2 different sizes.

so thats why my clutch kit came with two different pilot bearings:duh, I thought they just acidentally gave me a bonus bearing :histerica
 
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