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Builing a Bigger engine

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Old Sep 17, 2006 | 12:38 PM
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Default Builing a Bigger engine

Piece by piece. Starting with the engine Block. I hope to get a couple of years out of my little 5.3L to do this the right way.

I want to stay with stock appearance for legal reason so I'm limited to the LS1 or LS2 aluminum blocks. I have been informed that the LS1 is limited in bore size but the LS2 can be bored/stroked to 402 reliably.

So, how cheap can I get an LS2 Block and where?
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Old Sep 17, 2006 | 12:55 PM
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Im confused? you wantr to stay with stock appearance. Going with an aluminum block wont be doing that.

You can bore a 5.3l to a 5.7l and some have been able to make them a 383. Then you would still have you "stock" appearance.

ANd I think you have to make or get a diff wiring harness for the ls2 block.
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Old Sep 17, 2006 | 01:00 PM
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he has the L33 5.3 HO aluminum block so he has to keep an aluminum block

you could look into gettin a slp 402

what about a LS6 ?

and no you cant go too far with a LS1
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Old Sep 17, 2006 | 01:07 PM
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You are crazy Bill! The 112 will probably have trouble supporting more than 7-8 psi on a 402. Might want to think about the 122 for this combo, it would definately be sweet and let you run more boost without losing effeciency.
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Old Sep 17, 2006 | 01:13 PM
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One part at a time

7-8 lbs on a forged built 402 with 9.5:1 compression =
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Old Sep 17, 2006 | 01:43 PM
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DO NOT GO WITH A SLP 402. They all suck. Just search on ls1tech about them. I have 2 buddies with them, did have 3. They hav eall had to repull their motor's due to oil consumption and blue smoke.
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Old Sep 17, 2006 | 01:59 PM
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the ls2 oil filter is on the front side of the black instead of being in the back like ours..make sure you do a check on this, see if any one has done the ls2 truck..
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Old Sep 17, 2006 | 02:28 PM
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i say just save some pennys and go with the ls7 and fly
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Old Sep 17, 2006 | 07:09 PM
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Oil filter, hmm. How big can an LS1 go and be reliable?
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Old Sep 17, 2006 | 07:12 PM
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with all of the covers and everything bolted up can most people tell if its iron or aluminum.
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