alright, i have the plans for the top end all worked out. now i just need to make a bullet-proof bottom end.

pistons,i want to run the highest compression i can. the most i have found for a 355 is 11:1. I would like to run 11:5:1 - 12:1 but cant find pistons for it. they must be forged and would like to find them by JE or Ross.

crank, i have NO idea what to get. any suggestions would be awesome

rods, i am thinking Eagle H-beams. i know they make em for the LT1, i just need part #'s

bearings are going to be clevite 77 series.

is there anyway to convert to 4 bolt main caps or am i stuck with 2 bolt mains?

i am hoping for around 400-450 HP NA, and i am planning on running a 100-150 shot of N20. so these bottom end parts are going to be taking some abuse.

thanks guys.

 

Lots of folks convert to 4-bolt mains. You just need the caps and bolts or studs. You'll also need to get the block align honed with the new caps.
I think with your desired power level that 400-450 figure is flywheel?) you'll be fine with your 2-bolt main caps, but using ARP studs instead of bolts.

 

I went with two bolt mains on my motor, you should be fine although 4 bolts would be extra insurance. Also you can alter your compression ratio by combustion chamber cc's and head gaskets. Im using Felpro's, LT4 heads milled to 52cc's and a 18cc dished piston to achieve 11.1