toughy v8

I know plenty of you will say no but Can someone explain what the actual issue is? I have some Caddy lsa pistons im wanting to use but short of buying an ls3 block I dont know how else im gonna use em.

stock48

iTrader: (17)

Would be a good idea to sonic test the block first. The iron 6.0L blocks have thin cyls. I have 11 blocks in my shop and thickest one is .155" between cyl wals. Thinist is .089". Not only can they split cyls when thin they don't stay round lose ring seal.

toughy v8

So would filling the block help

stock48

iTrader: (17)

Filling wouldn't hurt but best thing would be a sonic test. I just saw an article where that 408CI twin turbo pinto that runs high 7's split a cpl cyls in same exact place. He was making a lot of power but I doubt it was +.065'' over. Even for a lower HP or NA deal I would still sonic test it. The thin block will usually show up on the hone.

c0ncEpT

iTrader: (4)

You can do it but its not recommended. I have been selling a lot of take out LS3 pistons on Ebay and I know for a fact there were a few guys buying them to make budget 6.2L engines out of 6.0L truck blocks.

Like stock48 said the block should be sonic checked as the cyl walls will be getting very thin @ 4.065

1CAMWNDR

iTrader: (21)

fill it to the water pump ports and it should be fine for normally aspirated only. Mine is 4.07".

toughy v8

Its for a turbo build im wanting to use my lsa pistons with a 4.8 crank and rods.

Z-Gad

iTrader: (6)

I concur on the thin walls on the 6.0 blocks. My machinist sonic tested mine before the build, and it was only .060 in the thinnest area of the cylinder wall. I ended up buying a new GEN IV iron block from Chevrolet and the thinnest wall he could find was .220 !!
What a difference ...

1CAMWNDR

iTrader: (21)

I would not do it then. Get a 6.2L block. If I had it to do over, I would not worry about having a 4.07" bore/4.100" stroke near 427" engine. I would have stopped at a 408".

stock48

iTrader: (17)

If it's a Gen 4 iron block like staited above and measures thick It would be fine. I have no experience with the iron Gen 4's all my blocks are gen 3's. Kinda makes you wonder about the alum blocks that are .500" of alum vs .100-.150" cast iron.

TurboS10

iTrader: (12)

Then just build a 5.3 or some combination of that size.
Sounds like your trying to pc together left overs.
With the price of a 5.3 it really isn't worth the hassle.
Turbo selection will make a bigger difference than bore size.