[Alan Roehrich]

Dustin. Only a GM crank is legal (the regular GM crank is either 1053 or 5140, the usual forging number is 7416). You may run any one of several aftermarket rods, the Eagle H beam rod with either an ARP 2000 or ARP L-19 bolt is common. There is an accepted connecting rod list on the website.

Reggie is correct, the 291, 391, 858, and 840 heads are legal. It really depends on the castings themselves, any of those numbers can be a good casting, the 291 is most common. The others most often came with a 1.725" exhaust valve, but your engine will be able to run the 1.88" exhaust valve. So, if you find a good set of the earlier heads with small exhaust valves, you get to start fresh with a very high seat.

The new 359 is a good intake, but if memory serves correct, you can run the 163 intake with a large cut in the plenum. The 359 does not have that cut, and it is not legal to cut it.

As far as I know, you can run the Bow Tie replacement block, be aware it costs about $2200. Any two piece rear seal 454 or 427 block can be used, I'd pour it with Hard Blok. As well as bush the lifter bores and align hone it.

The JE and CP pistons are the most common, you can find them on the approved piston list.

The cam can have any duration or lobe separation angle, but is limited to 0.520" lift at the valve.

If you have more specific questions, feel free to email me.

Good luck.