LS6 Long block

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Jun 11, 2004 | 02:03 PM

AmMscl

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From: NoVa

LS6 Long block

Ok I'm freak'n done with the piston slapping (or whatever F&*#'n) Noise
that is coming from my motor (all the time time) And Pontiac is NO HELP
OH I can't forget 1 QT of oil every 800-900 miles I use.
Now my question
Is the LS6 Long block worth considering or should I look at a rebuild?
I want a strong dependable motor with decent HP (potenial for 400RWHP)
Little help here please (before I sell out to FORD)
I'm open for suggestions

Last edited by AmMscl; Jun 11, 2004 at 02:32 PM.

Jun 11, 2004 | 04:06 PM

jrp

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From: Valencia, Ca

for the price of an ls6 long block you can get a forged 346-348 shortblock from a variety of sponsors. then swap whatever h/c and other mods you may have from the old motor to the new one.

Jun 11, 2004 | 04:23 PM

AmMscl

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From: NoVa

Wouldn't it work out better (money wise) having a factory 400hp motor with LS6 heads.
You get a factory warranty and reliability, right?
LS6 Long block is 5300.00
Just trying to way out the Pro and Cons

Jun 11, 2004 | 04:27 PM

jrp

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From: Valencia, Ca

Quote:

Originally Posted by AmMscl

that 405hp is at the crank, so your looking a a 5k+ ~350rwhp stock motor. like i said, you can get a forged shortblock from a variety of sponsors for ~2800 and a h/c kit for 1500-2000 bucks and easily have over 400rwhp and still be reliable. most sponsors have a limited warrenty and will stand behind there work provided you dont exceed the limits.

Jun 12, 2004 | 07:37 PM

Saving41

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From: CA

Quote:

Originally Posted by AmMscl

I have a 2003 LS6, and I still have some degree of piston slap. Pretty noticable all the time, but no oil consumption issues. I was told that it is a side effect of the short skirt design of the pistons. FWIW, I am in the process of building a LS6 with forged internals. In 20/20 hindsight, I would go with APE's assembled 346 forged long block. Ff it was available when I started my project, I would have come out of the deal at a better price, and would have had something put together by a well respected shop.

I have a good machine shop helping me with the assembly, but they don't have anywhere near the knowledge or experience with the LS1/6 compared to APE or others on this site.

Jun 12, 2004 | 08:33 PM

AmMscl

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From: NoVa

Quote:

Originally Posted by Saving41

I have a good machine shop helping me with the assembly, but they don't have anywhere near the knowledge or experience with the LS1/6 compared to APE or others on this site.

Hey thanks for the heads up
Screw GM I'm done with piston slap and their excuses, now I just need to find
a trustworthy shop (going Lunati 382 with AFRs!)
Once again thanks for the input guys

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