Vortech SC V2-SQ pulley?
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Joined: Jan 2004
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From: Motala (Sweden)
Vortech SC V2-SQ pulley?
Why came Vortech´s kit 2001-2003 LS1 cars with 34 tooth pulley.
And 1998-2000 with 30 tooth.?
I can understand that LS6 need 34 tooth, but why LS1?
I now reed 6 psi @ 6000 rpm, to low I think.
/Thanks Erik
And 1998-2000 with 30 tooth.?
I can understand that LS6 need 34 tooth, but why LS1?
I now reed 6 psi @ 6000 rpm, to low I think.
/Thanks Erik
Instructor
Joined: Dec 2002
Posts: 129
Likes: 1
From: Calgary Alberta
Originally Posted by Erra
Why came Vortech´s kit 2001-2003 LS1 cars with 34 tooth pulley.
And 1998-2000 with 30 tooth.?
I can understand that LS6 need 34 tooth, but why LS1?
I now reed 6 psi @ 6000 rpm, to low I think.
/Thanks Erik
And 1998-2000 with 30 tooth.?
I can understand that LS6 need 34 tooth, but why LS1?
I now reed 6 psi @ 6000 rpm, to low I think.
/Thanks Erik
Steve
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Joined: Jan 2004
Posts: 51
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From: Motala (Sweden)
Originally Posted by octaneman
They lowered the boost, as the 2001 up kits both for ls1/ls6 use the 34 cog tooth, we saw only six pounds of boost compared to 8 on the older kits, you can upgrade either the jackshaft pulley to a 32 or the blowr cog to a 32 to get 1 to 1.5 lbs of boost, but you will need something like ls1 edit to tune it.
Steve
Steve
You seem to know Vortech`s kit very well.
I had in mind to change the blowr cog to 30 tooth.
Together with long tub headers that will lower the back pressure.
I hope to reach about 7,5 psi.
Or what do you think?
Le Mans Master
Joined: Apr 2001
Posts: 5,468
Likes: 716
From: Black Forest CO
I am running the 30 tooth pulley on mine. My head unit is an SC trim. With this pulley my car made 8.5 psi at sea level and maked 6.5 psi here at home (7000 feet). These boost levels were seen with my FLP headers on the car.
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Joined: Jan 2004
Posts: 51
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From: Motala (Sweden)
Originally Posted by VortechC5
I am running the 30 tooth pulley on mine. My head unit is an SC trim. With this pulley my car made 8.5 psi at sea level and maked 6.5 psi here at home (7000 feet). These boost levels were seen with my FLP headers on the car.
What a difference in boost/altitude. I think 8,5 psi is pretty highon stock bottom.
I thought long tube headers would lower the boost, or have 98-00 kit's
different jackshaft pulley also, that make your boost that high with 30 tooth blowr pulley.
Last edited by Erra; Jul 22, 2004 at 07:18 AM.
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Instructor
Joined: Dec 2002
Posts: 129
Likes: 1
From: Calgary Alberta
Originally Posted by Erra
Thanks Steve!
You seem to know Vortech`s kit very well.
I had in mind to change the blowr cog to 30 tooth.
Together with long tub headers that will lower the back pressure.
I hope to reach about 7,5 psi.
Or what do you think?
You seem to know Vortech`s kit very well.
I had in mind to change the blowr cog to 30 tooth.
Together with long tub headers that will lower the back pressure.
I hope to reach about 7,5 psi.
Or what do you think?
Steve
Le Mans Master
Joined: Apr 2001
Posts: 5,468
Likes: 716
From: Black Forest CO
Originally Posted by Erra
What a difference in boost/altitude. I think 8,5 psi is pretty highon stock bottom.
I thought long tube headers would lower the boost, or have 98-00 kit's
different jackshaft pulley also, that make your boost that high with 30 tooth blowr pulley.
