I am in the process of buildin up my 429, and have run into a dilemma. Before I send out my rotating assembly to the balancing shop I was wondering if it is not too late to put in a 460 crank. My block is a pre- 72 429 block. I know that I have to change the pistons, but are there any other differences?? If all there is to change is the crank and pistons then I will go for it.



Nick from the frozen north
1974 F-250 4X4
soon to be 429
dana 60 front and rear

 

I think thats it phantom. I think its a good idea aswell 30 more ci with some good older heads youll be all set.

 

I believe the harmonic balancer is different also depending on which year of 460. Deen

 

Crank & pistons... that's all unless you have an external balance crank.

 

Nope, all internal balance. So there are no issues with deck height? What would my deck height be? .040" ?

Nick from the frozen north
1974 F-250 4X4
soon to be 429
dana 60 front and rear

 

Nick,

There's a formula on the link page on how to calculate deck clearance. You want to do it before you send your block to the shop in case it needs to be decked. You'll need the compression height of your pistons. .040 is high, the tighter it is, (.000-.040)the better the quench.

http://www.geocities.com/marsha89129/DETERMINING_COMPRESSION_RATIO.doc