400 HP on Boost is do able on stock components... and they will last!! ( 400-450 boosted is OK) !! HOWEVER.. the E7 blocks do break in half!! The 2MAE crankshaft does break at 1-5 journal!! How much and when?? That is a guess!!
Use and early 302 block ( pre roller)! Use 2M or 2MA crankshaft !! Arp bolts on the stock rods, and the forged pistons. This will take a lot more beating than the roller block and crankshaft!! Keys here... BALANCE the assy!! Clearance the piston to cylinder wall!! Side clearance on the rods.. ect ect... as you are going to be at long periods at rpm in the drift!! Just a thought.... but YES you can hold 450 HP on stock parts!!
Just me.........................................
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