69greyghost

iTrader: (1)

Guys whats the best ls motor to go forced induction either turbo or supercharger? Also what kind of cost would I be looking at and and what kind of hp? does anyone have past or present experience with these set ups? Thanks in advance guys.

Blackpanther99

iTrader: (8)

Both are good blocks. What are your goals? I have a 5.3 Silverado with a 76mm turbo, runs real good. 550+RWHP

Guitar

iTrader: (9)

If you're building the motor, 5.7...if you're not, 5.3. You can throw power at both, but the 5.3 will take stupid power (depending on how reliable you want it to be). A super simple search will show you what either block is capable of...

94 White T/A

Depends on your goals. A stock LS1 with 8-12 lbs should last a while while making 450-500 to the wheels. That's my plan so far and run it till it blows

redline61

If your going to go boost either way save some cash on the LS1 and buy the 5.3. Put a decent turbo behind it and you'll have an amazing engine. These motors never stop amazing me with what they can put up with.

Forcepower

iTrader: (23)

The aluminum 5.7 will handle lower boost than a iron 5.3. 5.3's or more readily available in most local junk/salvage yards for if you ever tear up the block.Buying another 5.3 from a yard is most likely going to be cheaper then re-sleeving an aluminum 5.7. I personally would go with the 5.3 only because once you add boost your going to want more.

pnykillerz28ls1

iTrader: (1)

i would def sell the ls1 and get a 5.3 thats what i did i got 1000 for the ls1 and paid 300 for a 5.3 and bought a bunch of other things for the turbo set up. and the 5.3 will make way more power

redline61

I have been debating doing this exact thing.