Corvette Performance - LS1 to a LS6?
10-08-2003, 02:26 PM
What do I need to turn my LS1 into a LS6. Internals and so on. Where can I get it? Is it even worth it? Thanx :D
10-08-2003, 08:55 PM
Imo, its not worth it. The LS6 is a damn fine engine, but you can make an LS1 do some of the same stuff that an LS6 can.
Depending upon what you're wanting to do, i'd say change the intake over (depends on what LS1 you've got. The 01-02s already have LS6's on 'em, if i remember correctly) then do some long tube headers, ported heads, cam and a few other boltons and so on and so forth, and you're set.
Lil bit of dyno tuning, and computer tweekage, and you're good to go!
10-09-2003, 01:16 AM
Here's what you will get with an LS6 engine with minor tuning and stock exhaust: 370rwhp/365rwtq, 28 mpg highway, emissions legal, warranty (if you buy GM crate motor), and excellent street manners.
For the DIY'ers:
If you don't have a 2001+, get the new intake manifold. ($400)
Larger MAF without screen. ($100)
GM LPE CNC PORTED LS6 heads outright ($1800 pair)
2002 Z06 clutch ($300?)
2002 Z06 cam ($200?)
Voila! All GM parts, ~390rwhp through mufflers after tuning. The GM CNC heads are higher compression and flow better, yet are designed for medium cams like the 2002 LS6 grind. About $3000, THEN you can sell your existing heads for $250, so figure $2800 when all is said and done.
Yes, you can get more HP with aftermarket parts. OR you can get less HP if you aren't lucky. GM stuff is a known quantity and is reliable well-designed gear. Unless you are a serious racer, the LS6 is a pretty slick daily driver. No fuss, no muss.
10-09-2003, 01:20 AM
The LS6 has a better intake, cam and heads and I believe the compression is a little bit higher.
Most guys change the heads, cam and intake (if they have the older LS1 without the LS6 intake) and that is usually better since most people use a hotter cam than the stock LS6 cam, and ported LS1 heads flow better than stock LS6 heads, not to mention they can be milled to raise the compression.
But ported LS6 heads flow better than ported LS1 heads.
So if you did heads and a cam and intake if neccessary (depends on the year LS1), then you could easily exceed the 405 hp of a LS6 with a LS1. I had 420 hp with just a C2 cam and the typical bolt ons on my LS1. If I would have put on ported heads, that would have easily turned into around 500 hp.
Hope that helps clarify.
10-09-2003, 09:05 AM
yeah, 69, i think the LS6s compression is 10.5:1 and the LS1s is 10.1:1
10-09-2003, 01:54 PM
Thanx fellas. I live in the Westcoast(L.A.). Is all this stuff legal? If it's not oh well, I'm going to do it anyways. I would like to have alot of power but keeping it 50-state legal. I only have free mods right now, centerforce clutch and exhaust. I have an idea of what I want. I would like my car to be for the street, and road racing not just 1/4 mile. I'm definitely going to put a procharger on it and all the necessary stuff. But engine wise where should I start(internals)? What goes first. Thanx
10-09-2003, 05:02 PM
If you're going to put a procharger on it, don't waste your time changing over to an LS6 setup. The forced induction will not be benefitted greatly by using LS6 heads. In fact, I would use LQ9 6.0 truck heads instead. They have a lower compression ratio and flow just as well.
The LS6 cam would also not be a great choice for forced induction. You want an exhaust biased cam for a supercharger. It sounds like you don't want to go to radical, so I'd probably recommend something like a 220-226 duration with lift determined by what the heads flow to.
For your question concerning order of installation, get the procharger first. Get used to the extra 140hp. Swap in the heads and cam...again, get used to the extra 50hp. Finally, build up the bottom end with forged internals, turn up the boost. Get a pair of diapers for when you sh!t yourself from the 600+rwhp. :D
10-10-2003, 07:37 AM
Actually, LQ4 heads would probably be more beneficial, since they flow just as well as LQ9 and LS6 heads, but have an even lower compression ratio, then either sets.
Go check out what some of the sponsers have for cams w/ supercharger applications. Sometimes, if you contact companies like Comp, or Thunder they can tell you what kinda cam you're going to want w/ your setup and all that.
And i definatly would wait to build up the bottom end and toss up the boost. The extra 6-8 w/ the "stock" blower will be enough to give you a good punch for awhile.