camaross2002

I have the choice to go with a forged bottom on a ls1 or keep the stock. I am not trying to spend the extra money on it though. I wanted to know if I could still keep the stock bottom and if It would survive with about 475 rwhp and naturally asperated. I am not going to use Nos or any FI at this time. The mods are as follows:

TSP 200cc Heads
224/228 .637/.639 110 LSA cam
Electric Water Pump
Underdrive Pulleys
Fast 90/90 thats ported
Strange 12 bolt w/ 4.11 gears that has Line-x done to it
Full BMR package with Relocation Brackets
Mcleod Single Disk Clutch w/drill mod
A1 Steel 3" Drive Shaft
QTP long tube headers
Custom Y pipe
Hooker AeroChamber Mufflers with Center Mounted Exhaust
and more mods I forgot.

bad6as

iTrader: (17)

i think you will be fine

DONAIMIAN

iTrader: (18)

I would use the stock rods w/rod bolts, but maybe get your hands on some aftermarket pistons. I know its a couple people that make hyperutectic pistons with valve reliefs.

camaross2002

What will those pistons do for me and how much are they?

MARKSZ71

iTrader: (3)

a forged motor is gonna be louder than a normal motor,i have a forged and wouldnt go back

camaross2002

I don't care much for the sound I guess; I just don't want to waste 2500 if I don't have too. I was hoping the stock would last with these mods.

DONAIMIAN

iTrader: (18)

If you can find an aftermarket cast hyperutectic piston it will give you valve reliefs so you could mill your heads for more compression or run a bigger cam in the future without risk of PtoV issues.

camaross2002

I got the forged bottom in the end.

s346k

iTrader: (4)

if you're going to spend the money forging an ls1...just sell yours and buy an lq4/9. these bottom ends can handle a ****-ton more hp that 475 wheel on the STB assuming a proper tune. it's rare to see someone put a window in the block unless they're north of 7,200 rpm frequently...but rod bearing death is common, simply due to poor oil return (pre 00 block) and/or lack of oil.

DarinsTA

iTrader: (11)

I actually ported the cross over slot on the rear cover on my last build up, because I read some of the bad oiling issues. I used forged pistons and arp rod bolts. Its a standard bore and makes no piston noise... and if I decide to spray it later, I have the stuff to take it...