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View Full Version : Opinion on rebuild/replace


PortDawg
03-05-2016, 10:39pm
My Z has 167000 miles on it. Starting to think about rebuilding/replacing the engine.

Thoughts/opinions on both, please? What and why...

Sneaks
03-06-2016, 09:05pm
If it aint broke, don't fix it. Words to live by.
Why are you thinking about it?

PortDawg
03-06-2016, 10:00pm
I like plans... AS it gets up there in mileage, I want to have a plan.

RonC5
03-07-2016, 08:26am
What kind of HP do you want? LS3 conversion seems the most practical, and if you want to buy a new one, 2 year warranty for about $6K.

PortDawg
03-08-2016, 08:09am
What kind of HP do you want? LS3 conversion seems the most practical, and if you want to buy a new one, 2 year warranty for about $6K.

I love the sound of this, but not sure what the complications of this would be? It's actually much easier to find a LS3 than a LS6 for some reason.

RonC5
03-08-2016, 11:15am
Seems to be a fairly common upgrade. Here is a thread at Lingenfelter that list parts used.

2004 Corvette LS1 to LS3 swap (http://www.lingenfelter.com/LPEforumfiles/showthread.php?1911-2004-Corvette-LS1-to-LS3-swap)

Sneaks
03-08-2016, 09:45pm
It's pretty much a drop and swap. Have to change a couple things for the throttle body I believe, and that's about it.

PortDawg
03-08-2016, 10:53pm
Anyone venture a guess at why it's difficult to find LS6's?

Y2Kvert4me
03-09-2016, 01:10am
Supply/demand? :dunno:

Other than a purist who insists on keeping things absolutely stock, I cannot think of a reason to choose LS6 over LS3.

GM probably prefers to taper off production of the old Gen3 engine as well. And they can influence the exact buying decision you're making by pricing and availability.

jda67gta
04-15-2016, 05:29pm
Chevrolet Performance 19301326, Chevrolet Performance LS3 6.2L 430HP Engine | Chevrolet Performance (http://www.jegs.com/i/Chevrolet+Performance/809/19301326/10002/-1?CAWELAID=230006180000981251&CAGPSPN=pla&catargetid=230006180003468685&cadevice=c&gclid=CPmUg87YkcwCFQmQaQodsO8KgQ)

Eagleeye
04-20-2016, 07:15pm
Swap out and you'll have LS6 block to sell, build, etc. Mine [LS3] is .8 sec. and 4 mph faster in the 1/4 than the black Z