i was told that the 460 will bolt up to the 351m's tranny. (bell housing) is this true? if so what other changes would i have to make?

1980 F250 4x4
351m 3 speed auto
thanks.

 

Yes, the 351M/400 & 429/460's all share the same bolt pattern & interchange.

The Distributor does to

 

You will have to change the motor mounts.

 

whooo. i can change motor mounts thats no problem. happy day. i'm going to find a 460 or 429 now. happy me.

 

Don't get so happy just yet. If it's an automatic, the 351M/400 torque converter will likely not work with the 429/460. The pilot **** is too big.

I read somewhere they may have changed that on later models. I was dealing with early model stuff ('69 429 engine, '72 400 tranny) and it definitely didn't fit. I had to change the torque converter.

 

I did too.

I think the post 74 T/C's had the better fitting snout

 

I recently had that problem with a 429 engine. Ended up taking the converter with the short snout .......what threw me off is, The short snout converters were listed as being for F.E. engines, with no mention of them fitting the 429 crankshaft.

 

ty. for all the advice. the 1980 is the last year the m was produced.so it is a later modle. i will look into it when i go engine shoping. you all have valued advice to me. thank you for helping.