408

[02_slp_ss]

ok guys well i picked a 2001 ls1 block up at carlisle today..... got a awesome deal on it. guy said it had somewhere around 40k miles on it, i looked it over top an botom no cracks nothing. cyl walls look brand new. so i jumped on it got it for 125$ he was asking 500 for it..... any way i want to make a 408 out of it. can u do this with the ls1 block or do u need the 6.0? i been looking around but can find very little info on them, thought u guys might no some more things to help me out.

any imput would be nice

[importhater81]

Lq4 block (6.0L truck block) is what most people build a 408 from.

Not sure if it can be done with a Ls1,but I wouldn't be suprised if you could.

[southpaw0314]

i think you would need to have it sleeved to build a 408 with that block, it would be cheaper to use the 6.0 truck block

[02_slp_ss]

i think you would need to have it sleeved to build a 408 with that block, it would be cheaper to use the 6.0 truck block

i thought u might have to sleeve it, didnt really want to go with the LQ9 just because there heavy! but i dont know what i want now lol talking to my tunner a little an me an him where thinking about doing 1 big turbo run stock CI. an have 8:1 pistons. but all still up in the air now

[Mr. Luos]

You would have to re-sleeve it for the larger bore.

[importhater81]

i thought u might have to sleeve it, didnt really want to go with the LQ9 just because there heavy! but i dont know what i want now lol talking to my tunner a little an me an him where thinking about doing 1 big turbo run stock CI. an have 8:1 pistons. but all still up in the air now

With 8:1 pistons I would sure hope you're planning to run forced induction.

[Mr. Luos]

didnt really want to go with the LQ9 just because there heavy

85 extra pounds isn't that much when you make 750+ at the wheels.

[importhater81]

85 extra pounds isn't that much when you make 750+ at the wheels.

[02_slp_ss]

85 extra pounds isn't that much when you make 750+ at the wheels.

haha well u do make a good point there!! what will a stock block hold? id like to be in the 600 whp range


the real question is Boost it or keep it all motor

[mark21742]

Did you get a bare block, or rotating assy with it? I still have the Kateck rod bolts, 7 good pistons and rods, good crank and main caps.

[Mr. Luos]

haha well u do make a good point there!! what will a stock block hold? id like to be in the 600 whp range


the real question is Boost it or keep it all motor

Block is good for that power range no problem.

No real need to stroke it if all you want is 600-650 at the wheels. Boost will get you there with a forged motor.

[02_slp_ss]

Did you get a bare block, or rotating assy with it? I still have the Kateck rod bolts, 7 good pistons and rods, good crank and main caps.

i got the bare block, how much u want fo rthat stuff