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cost of an 800rwhp LSx build

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Old Mar 29, 2007 | 08:02 PM
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Default cost of an 800rwhp LSx build

thinking of doing an LSx swap into my GN. What is the approx cost of said engine.. not counting a trans, I have a 4L80E in storage already
basically for the longblock, 6.0L 370ish cubes
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Old Mar 29, 2007 | 08:03 PM
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why not stick with the GN engine?
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Old Mar 29, 2007 | 08:08 PM
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Originally Posted by 396D1SS
why not stick with the GN engine?
I miss the sound of my V8's, my GN is built but for 650rwhp I have to run 25PSI. LSx I can make that with less cylinder pressure. I also hate the sound of the V6 but Im not complaing there. Just looking at ways to make more power on less boost and get my favorite sound back.
Im not decided on doing it yet or not, but I could sell my long block and a few other parts and have enough to get a LSx long block. But then theres the other swap parts needed to go into a G Body.
Anotehr thing is parts availability, many more parts for the LSx, although there is alot for the turbo 6 too. To make the power I want now, Id have to go to a Stage II Buick and the cost to build that is anywhere from $15-$20K.
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Old Mar 29, 2007 | 08:51 PM
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well when i had GMRSpeed up and running we sold 800rwhp set up for 17000 which included 6.0 motor twin turbo kit fuel system and labor... soo knock off labor which I think was about 2000 and there ya go.. now depending on what deals you can find you may be able to knock a bit more off
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Old Mar 29, 2007 | 08:55 PM
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why not SBC?? or BBC???
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Old Mar 29, 2007 | 10:18 PM
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buddy of mine is doing a TT SBC in his GN, I thought about that one too but I like the characteristics of the LSx engines
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Old Mar 30, 2007 | 01:15 AM
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Read the sticky.
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Old Mar 30, 2007 | 08:30 AM
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I think the longblock with timing chain, cam, heads, shortblock, SFI balancer, ARP head studs, main studs, forged pistons. forged rods will be north of $7,000.
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Old Mar 30, 2007 | 09:02 AM
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Originally Posted by Pro Stock John
I think the longblock with timing chain, cam, heads, shortblock, SFI balancer, ARP head studs, main studs, forged pistons. forged rods will be north of $7,000.

Yeah around there sounds right.... and then add the $$$ modding your turbo kit..
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Old Mar 30, 2007 | 02:07 PM
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I'd seriously consider going SBC. It has more head bolts and is even cheaper than the LSx, and you wanna talk about parts availability........
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Old Mar 30, 2007 | 06:30 PM
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