benzieZ06

Greetings!

My curent motor is a stroker LS2 bored to 4.020. It is N/A and needs rings. I have decided that since I am going to tear the motor down, I might as well have a little fun and add a supercharger. My question is it OK to bore an LS2 out to 4.030, knowing that it will see 7-8lbs of boost? Am I asking for trouble boring it out that far? Obvisouly if I dont have to spend $1200 on a new block I dont want to. Thanks for any advice you can offer.

matrixiskool

iTrader: (12)

I have heard that at 4.03 the ls2 liner is still thicker than a stock ls1 liner, I've seen this multiple places but don't hold me to it.

FlamingTA

iTrader: (8)

As long as you don't use a 4.1" stroke you should be fine. ERL is making them all the time as a 408 on a LS2 block.

Jason 98 TA

iTrader: (4)

That's a pretty tricky situation that we run into here @ TSP. The reason we would like to do 4.030" bore LS2 blocks is because lots of LS2 blocks are factory machined incorrectly & some blocks need a little bit larger bore to correct these issues. A typical LSmachine shop won't even notice these factory mis-machined blocks, but our CNC digitizer checks the blocks prior to machining so that we can determined the best method of correcting the issues & putting the blocks on blue-print specs.

Midnite Magic

Interesting do you have your own machine shop in house?

v8pwr

iTrader: (19)

There are a lot of machine shops that have the ability to digitize blocks. A lot of newer CNC machines have this ability. LS blocks are pretty decent compared to previous offerings but you are pushing the limits. You should get with someone who has experience with this process and check with them. Some people have the ability to accurately gage the actual thickness of the liner but this will come @ a cost. I think you will be fine but you you will need to have you block inspected by someone who knows what they're doing.