460 for 351m
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460 for 351m
I have a 77 f-250 hy boy. It has a 351m in it with a 4 speed manual. The 351m has a sticking valve but I was wandering if I'm gonna go through the trouble, will a 460 mate up to the transmission of the 351m?
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Joined: Feb 2004
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From: Longvalley, SD
Yes the 351m bellhousing will mate to the 460...however the 351m bellhousing is about 3/8'' shallower than the 460 bellhousing. You have to make up some space inbetween the bellhousing and motor block. I put a 460 in my 70 highboy and i cut out a piece that went inbetween the block and bell that was 5/16'' thick along with the factory spacer plate that was about 1/8'' thick so it was a total of 7/16'' thickness in between the block and bell. You may also have to get different motor mounts (not sure) check landlproducts.com for motor mounts.
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Joined: Jan 2004
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From: Anchorage Alaska
spacer
Ok ive been told there is not a spacer, and then again i am told there is a spacer between the bellhousing and engine block with the 351m to 460 swap, WHAT IS THE CORRECT ANWSER? i posted about this and they keep telling me there is no spacer... then reading now again on teh forum and WHAM there is a spacer needed mentioned again. maybe we need a article on this swap in the tech section to clear it up once and for all.
Ray
Ray
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From: Ilion Herkimer
there is a plate that goes between the engine and bellhousing, not realy considered a specer. i used 2 of them when i installed my 460. i also had a pilot bearing machined to fit deeper in the crank to accomidate the smoothe end of the tranny.
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oddfordjunkie
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
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Jan 13, 2013 11:43 PM
