Chris Gage

iTrader: (18)

While using the stock crank??? The block being used is a LQ4/LQ9

Black Sunshine/ 00SS

iTrader: (1)

30 over, and 60 if you sonic check the block & it comes out good.

Chris Gage

iTrader: (18)

what size i meant....

Nate_Taufer

iTrader: (1)

You could make it a 376 with a 4.06" bore. I wouldn't push it past that although some have gone as high as 4.08"

Nate

PREDATOR-Z

What he said

8banger

iTrader: (16)

With a 4" crank, a 4.03" bore would get you a 408, and a 4.06" is a 414.

dug

iTrader: (10)

What size bore do you need for the LS7 heads? Is it unrealistic to expect 600rwhp with those heads on a 414? Whats the longest stroke you can run? 4.125"?

8banger

iTrader: (16)

4.125" is the longest I've ever heard of. I heard that the LS7 heads work best with a 4.1" or bigger bore, however the L92's are basically the same heads, unported, and they come stock on a motor with a 4.03" bore, so I think the LS7's could work on a 414. With a good port job, good intake, decent compression, and an appropriately designed cam, it should be close to 600rwhp if not over. After all those heads (L92's, not even LS7's) flow 330cfm stock.

Jed Z06

iTrader: (1)

I am bulding up a 415ci
6.0l bored 4.0625 x 4.0 stroke
block was sonic tested by HPE

BOTTLEFEDLS1Z

iTrader: (32)

Is Eric K. doing the work for ya???

Jed Z06

iTrader: (1)

Yes, this block was initially built by him~