77 f250 crew cab highboy

[sniff]

have a 351m in this truck and have a line on a 429 cobra will that bolt right up not. any one know the horsepower differance,thanks for any help.

 

[bronc76]

the 351M, according to chilton has a rating of 132, the 429 in the mustang has 370-375. since the 351M /400 has a big block bell housing bolt pattern it should bolt up to tranny. There is alot of horsepower potential if you decide to stick with the M-block.