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Old 04-25-2007, 07:51 AM
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Default Engine opinions/suggestions

How does this sound:

5.3 block bored to 5.7
5.7 Crank
LQ9/LS2 Rods (Maybe forged)
Stock LS1 Pistons (Maybe forged)
Stage 2 5.3 Heads
220/224 .566/.568 112 Comp Cam
LS6 Intake and Injectors

This will be mated to a 5-Speed in a 4x4. What kind of power do you think this will make? Would you change anything?

Last edited by RedChevy4x4; 04-27-2007 at 07:17 AM.
Old 04-26-2007, 11:29 PM
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Just get an LS1 shortblock and your choice of ported 5.3 or 5.7 heads. The cam sounds good.
Old 04-26-2007, 11:40 PM
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I would go bigger with the cam with the 5spd
Old 04-27-2007, 01:37 AM
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Originally Posted by blake2kz71
I would go bigger with the cam with the 5spd
Cam size/design will depend on intended truck use and power goals.
Old 04-27-2007, 02:52 AM
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Originally Posted by silent1
Cam size/design will depend on intended truck use and power goals.
well obviously with the build he has described he wants big power. Espically with the high flowing intake/heads. SO imo the cam is too small.
Old 04-27-2007, 03:02 AM
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Originally Posted by blake2kz71
well obviously with the build he has described he wants big power. Espically with the high flowing intake/heads. SO imo the cam is too small.
I agree, especially since he's going through the trouble of doing an ls6 intake swap
Old 04-27-2007, 03:12 AM
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Originally Posted by RandomHero
I agree, especially since he's going through the trouble of doing an ls6 intake swap
and if hes done his research he knows the stock truck intake is good for ~450HP or so and ~5500 rpm and less. So he must want a high flowing intake and heads thats good for as high rpm as he wants and north of 500hp.
Old 04-27-2007, 07:16 AM
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I'll probably go bigger on the cam. I had thought about putting that cam in the 4.8 for now and switching it to the new engine so I could have a little more power now. I think I'll keep my eyes open for a 4" crank to go in it also.
Old 04-27-2007, 09:06 AM
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what year 5speed?
Old 04-27-2007, 09:28 AM
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05 I believe it's a TR-3450.


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