How much HP gain?

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Aug 4, 2009 | 08:36 AM

zx14

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From: San Bernardino Ca.

How much HP gain?

1999 vert, I have shorty header, Borla single muffler exhaust, and am about to put on my new LS6 intake and LS6 heads.

any guesses?

." I should do a cam too since its opened up, but worry about calif. smog test."

Aug 4, 2009 | 09:35 AM

Blu

Melting Slicks

Joined: Dec 2005

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From: Charlotte NC

The LS6 intake/TB and 243 heads should net you 25-30rwhp possibly more.

Aug 4, 2009 | 10:26 AM

mitchell c

Racer

Joined: May 2009

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From: jacksonville fla

I would definatly consider a more aggressive cam while the engine is apart. A cam with a 224 duration with a 114 or 115 LSA should pass the sniffer. You could also call Comp Cam and get their recommendation on what cam to use.

Aug 4, 2009 | 10:45 AM

zx14

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From: San Bernardino Ca.

Quote:

Originally Posted by Blu

The LS6 intake/TB and 243 heads should net you 25-30rwhp possibly more.

LS6 TB bigger than LS1?

Aug 4, 2009 | 11:12 AM

nickolbag

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From: Winter Park FL

Quote:

Originally Posted by zx14

LS6 TB bigger than LS1?

Pretty sure the LS1/6 TB are exactly the same.

Aug 4, 2009 | 01:31 PM

zx14

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From: San Bernardino Ca.

Quote:

Originally Posted by nickolbag

Pretty sure the LS1/6 TB are exactly the same.

I thought so too

Aug 9, 2009 | 02:35 AM

MYLS6

Burning Brakes

Joined: Oct 2002

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From: Pembroke, GA

Throttle body size - same
Plenum volume - larger
runner volume - same
runner length - same

this is what I found for intakes
_______________ls1_____ls6
Plenum volume - 5.06L--5.19L
runner volume --.536L--.541L
runner length ---262mm-262mm

Im curious on the shorty headers, was that because of emmissions?

Aug 9, 2009 | 09:22 AM

simpleman68

Le Mans Master

Joined: Jun 2004

Posts: 6,752

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From: Bethlehem PA

I've got my H/C set for sale in the C5 Parts section if you're interested.
http://forums.corvetteforum.com/c5-p...-for-sale.html

Scott

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Aug 10, 2009 | 07:08 PM

zx14

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Instructor

Joined: Jun 2008

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From: San Bernardino Ca.

[QUOTE=MYLS6;1571073223]Throttle body size - same
Plenum volume - larger
runner volume - same
runner length - same

this is what I found for intakes
_______________ls1_____ls6
Plenum volume - 5.06L--5.19L
runner volume --.536L--.541L
runner length ---262mm-262mm

Im curious on the shorty headers, was that because of emmissio

yessis, the smog cops will get you with long tubes