More speed

[BrownIII's]

I have a 351M in my 1980 Bronco, I need to get a 5 speed manual transmission to replace my 4 speed manual, I have heard that the ZF 5spd will bolt up to the 460 nut don't know wheter it will bolt up to 400/351M, and i know that the very common Mazda 5spd will only bolt up to the small block 351's (windsor and cleveland). So my question is, is this tranny a good option (if it will work) or should I go with a different motor and tranny (351W, or 302) since 351M is becoming more and more obsolete?

 

[Miss Kitten]

there are zf tranny's that will bolt up to the the 351 (small block) and ones that will bolt up to the big block 460's

when you are looking for a replacement tranny just make sure it's one that's for the small block

i did the swap in my 95 and loved it. highly reccomend the zf swap

 

[Elmo]

I thought the 351M is a big block

 

[Miss Kitten]

351/400 small block

429/460 big block

 

[Justshootme84]

The 351M/ 400 have a bigblock bolt pattern though for the tranny bellhousing, like the 429/460.