Quote Originally Posted by FordManMike
The truck is going to be a weekend truck so im going to mob some dunes race and drive in on the weekdays here and there i was thiking some where around 500hp but like i said i willing he see what everyone has to say about it. Im sure this came up alot on this fourm but i really need help. one last thing my friend said the 429 is the same block as the 460 and i want to make sure if thats true.
Thanks
Mike
Mike,

Everything is the same between the engines except the cranksaft and pistons.

Do you want to rev to more than 7000 rpms? A 429's stroke is only 3.59", while a 460's is still only a mere 3.85". The 460 can be built to rev as well, but why the need for high rpms? More $$$ will have to be invested in valve train, lighter parts for the rotating assembly, engine will require more frequent service/preventative maintenance...and likely won't last as long. Also, forged 429 piston selection is very limited while 460 pistons are literally everywhere.

Finally, with the big 5-9 psi tires in the sand dunes I'd think you'd want both rpm and torque.

500 hp is easy with the factory 460 parts and would still be quite streetable (to and from Pismo beach), while 500 hp from a 429 makes for a rather obnoxious street driven vehicle.

Either way (429 or 460) can be done with the stock parts no problem, so why give up 31 free cubes and the broader (usable) power range? I know truck pullers that rev their 460's to 7500 rpm or more...you just need to know how to build these engines/know the proper combinations.

I'm in the San Francisco bay area and might be able to help...have tons of 429/460 parts...blocks, heads, crans, porting knowledge, good combos, etc.

Paul