LS6 manifold, is it worth it?

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LS6 manifold, is it worth it?

Postby bill1978v8 » Tue Jul 11, 2006 8:59 pm

I'm thinking about doing heads and cam on my 98 LS1 but should I do the LS6 intake first? Or all at the same time? Anyone with any experience with LSx engines?


Bill
Last edited by bill1978v8 on Tue Jul 25, 2006 7:40 pm, edited 1 time in total.
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Postby ColinOpseth » Wed Jul 12, 2006 3:38 am

The LS6 manifold is worth about 20hp over your current manifold. Being that your engine is a 98 you have a lot of '98-specific requirements. I am not 100% positive the LS6 manifold will work on your year of engine.

As well, you need '98-specific aftermarket heads, I believe. You might want to check into the F.A.S.T. intake. It's a 2-piece composite manifold and has integral nitrous bosses cast into it.

Take car,e
Colin
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Postby bill1978v8 » Tue Jul 25, 2006 8:00 pm

97-98 LS1's have perimeter bolt valve covers and different coil brackets as well as an external EGR vs the 2003 LS6. GM makes a kit with LS6 heads, cam, valve covers and all gaskets etc for $2,200.00. This gives 405 HP but wow, thats a lot of dough.

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Postby ColinOpseth » Wed Jul 26, 2006 1:37 am

Look into AFR heads. I'm not sure if they're compatible with the '98 engine, though... they may not be.
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Postby starfire383 » Fri Aug 04, 2006 5:48 pm

camaroz28.com has one of the best LS tech forums I've ever seen, give them a try. The rest of the site tends to be a little high schooley for my taste, but good LT/LS tech
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Postby custom101 » Fri Dec 22, 2006 7:00 pm

wait and get the whole LS6 package, Cam-heads-intake, you should be able to do better than 2200bucks.
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Postby Kenova » Fri Dec 22, 2006 9:05 pm

Check out this link. It will answer questions you never thought to ask.
http://www.ls1tech.com/forums/

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Postby bill1978v8 » Sat Dec 23, 2006 2:45 pm

LS1tech.com has a lot of good info. I found out the 98-2000 LS1's have a better cam then the 01-02 cam:

98-00 - .500/.500", 201*/212* at .050, 119.5* LS

01-02 - .467/.479", 199*/210* at .050, 116* LS

What this means is that my 98 LS1 will gain about 20 hp with just the LS6 intake swap according to what others have gained.

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Postby custom101 » Sat Dec 23, 2006 6:30 pm

you might be right on that one, not sure how the ls6 intake alone acts to the ls1 98-00 heads, on the ports size and soforth?

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