finally got some time to take on a new motor project, just bought a good 340 uncut '70 block and a 4" steel crank and OEM length H beams, (I normally like to run the 2" journal SBC rods with the smaller pins but the $ was right)

Anyway my first instinct for a 340 was to swap in the bottom end from my 318 mini stroker (6" alum rods on a 3.55 MP crank) to build a high revving ~370 incher and I got a nice victor 340 with the deal and I have a sweet little 255/260 @.050 .570-ish 0n 106 Harold Brookshire designed Lunati I got from Goldmember. That gives me the 4" I can build a 392" out of the 318 and drop in a tow rig (a 74 short wb fleetside dodge would be sweet).

The dilemma is if I go ahead and do the 414 (should clean up at .20 over to use common 4.06" rings ) I'm pretty much gonna have to reuse my bowl/VJ cleaned up/pinch relieved (but otherwise off the shelf) E-heads, so I'm thinking I'm gonna be limited to about 480-500 horse even with a near optimum cam. I'll probably go this way since I got a couple people that want to buy the 341" Roller motor anyway, with an oil cooler it'll make a sweet streetable A body motor.

What have you guys seen out of your 408-416's with stock E-heads?

New/bigger port heads are out right now, got a kid in college!!