LS9 Crate Engine Next Fall!!!

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Dec 30, 2008 | 08:17 AM

#21

ls1290

Dumb Ass Vette Moderator

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From: Colorado

Quote:

Originally Posted by Mr. Sandog

Question about the exhaust manifolds...they look symmetrical, which has to be better (e.g. for scavenging) than the normal, asymmetrical manifolds, yes?

Symmetrical or equal length tubes produce better scavenging. The longer the tube, the greater the scavenging affect.

Dec 30, 2008 | 08:59 AM

#22

digitalsolo

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From: Fort Wayne, Indiana

Quote:

Originally Posted by tomsws6

the block is just an ls3 correct?

According to the article I read in one of my car mags (Hot Rod or GMHTP) it's LS3 based, but they reinforced a few things in the block to keep it more rigid. Same with the heads, LS3 based, but with some new casting technique that makes them more heat resistant.

I see no reason a well prepped LS3 block wouldn't hold up just as well. In 2008, 640 HP at the crank isn't all -that- crazy on a Gen III/IV motor after all.

Dec 30, 2008 | 03:28 PM

#23

XcYZb

On The Tree

Joined: Nov 2004

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From: Rochester, MN

Quote:

Originally Posted by 1bdbrd

I believe the LS7 crate motor included the oiling system and the harness/ecu. Not sure if it came with front drive accessories however.

No, no oil system, no ECM/harness and no front drive accessories included with the LS7.

Dec 30, 2008 | 07:45 PM

#24

NemeSS

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From: Houston,TX

i would be glad if they only sold the sc with the pulley for the crank and the tensioners. iirc the wp, ps, are supposed to be the same as ls3 c6
top a 6.0 ly6 stock 9.6:1 with that sc and go.

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