From posi to spool?
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
From posi to spool?
I'm thinking about switching from my 12-bolt posi (IRS) to a spool and I wonder if that would give me a noticeable improvement in my ET's as the spool is about 20 lbs lighter than a posi???
Has anybody done that (without any other changes) and what were the results?
I'm mostly interested in it from a performance and not strength perspective as the posi unit in my diff is very strong...
Has anybody done that (without any other changes) and what were the results?
I'm mostly interested in it from a performance and not strength perspective as the posi unit in my diff is very strong...
Thread Starter
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
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St. Jude Donor '03, '06, '17
That would be sweet.. Maybe I'll get the spool before the national Corvettechallenge..
My best is 10.35 in 62 degree weather.. If I'll get another tenth off with the spool, I'd be at 10.25.. If I'd be able to race in 45 degree weather, I might get into the 10.0x range on engine... That would be sweeeeeeet!! A 100 shot could get me deep into the 9's then..
My best is 10.35 in 62 degree weather.. If I'll get another tenth off with the spool, I'd be at 10.25.. If I'd be able to race in 45 degree weather, I might get into the 10.0x range on engine... That would be sweeeeeeet!! A 100 shot could get me deep into the 9's then..
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Go for the lightened versions..you can get some real featherweight ones.
JIM
JIM
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From: I have no tolerence for liberals and fools, but sometimes i repeat myself
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St. Jude Donor '08
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From: Lahaina Hi
Jeb makes spools on the form here and here are some others
http://nationaldrivetrain.com/shopsi...tml/spool.html
http://www.precisiongear.com/dana44v.htm
The spool will make the car hande different than it does now.
When you turn, it will nose dive on you and make those turns wide.When you make turns the steering wheel will want to kick back .
If you get crossed up just let out of the gas and the car will come back around.Make sure you stage streight.
For a drag car it is the only way to go.
www.dragvette.com is another good site and they will give you alot of info.
http://72.14.253.104/search?q=cache:...s&ct=clnk&cd=2
http://nationaldrivetrain.com/shopsi...tml/spool.html
http://www.precisiongear.com/dana44v.htm
The spool will make the car hande different than it does now.
When you turn, it will nose dive on you and make those turns wide.When you make turns the steering wheel will want to kick back .
If you get crossed up just let out of the gas and the car will come back around.Make sure you stage streight.
For a drag car it is the only way to go.
www.dragvette.com is another good site and they will give you alot of info.
http://72.14.253.104/search?q=cache:...s&ct=clnk&cd=2
Last edited by REDC4CORVETTE; Dec 29, 2006 at 01:31 AM.
Thread Starter
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Jeb makes spools on the form here and here are some others
http://nationaldrivetrain.com/shopsi...tml/spool.html
http://www.precisiongear.com/dana44v.htm
The spool will make the car hande different than it does now.
When you turn, it will nose dive on you and make those turns wide.When you make turns the steering wheel will want to kick back .
If you get crossed up just let out of the gas and the car will come back around.Make sure you stage streight.
For a drag car it is the only way to go.
www.dragvette.com is another good site and they will give you alot of info.
http://72.14.253.104/search?q=cache:...s&ct=clnk&cd=2
http://nationaldrivetrain.com/shopsi...tml/spool.html
http://www.precisiongear.com/dana44v.htm
The spool will make the car hande different than it does now.
When you turn, it will nose dive on you and make those turns wide.When you make turns the steering wheel will want to kick back .
If you get crossed up just let out of the gas and the car will come back around.Make sure you stage streight.
For a drag car it is the only way to go.
www.dragvette.com is another good site and they will give you alot of info.
http://72.14.253.104/search?q=cache:...s&ct=clnk&cd=2
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From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Like Jim said, If you are going to do it get a lightened one. A car with a spool drives a little different, but not that noticeable, until you try to push it around a corner
Good luck on the 9's.......it will happened this year for sure.
Good luck on the 9's.......it will happened this year for sure.
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St. Jude Donor '03, '06, '17
Last edited by GrandSportC3; Jan 1, 2007 at 12:18 PM.
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From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
I understand the 12 bolt IRS deal as far as fit goes.....but does Tom only offer one spool??
I had a really nice spool IRS set up a few years back...I think I sold it to red79454.
I had a really nice spool IRS set up a few years back...I think I sold it to red79454.
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St. Jude Donor '03, '06, '17
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From: I have no tolerence for liberals and fools, but sometimes i repeat myself
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St. Jude Donor '08
Oliver, the Tom's spool is an 8.8 ford, 31 spline piece, with one end (driver's side i beleive) machined .200 shorter. If you know of a good machine sho and you take him the new spool and your current posi setup they should be able to modify it with no problems
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St. Jude Donor '03, '06, '17
Tom's wants $600 and I'll get my posi back. Strange makes a lightweight chromoly spool ($188.69 at Summit)
If it would be less than $400 at the machine shop, it'll be cheaper that way...
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From: I have no tolerence for liberals and fools, but sometimes i repeat myself
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St. Jude Donor '08
hmmm.. I'd need to know for sure if it's the drivers side... I wonder how much a machine shop would charge to modify the spool and install it???
Tom's wants $600 and I'll get my posi back. Strange makes a lightweight chromoly spool ($188.69 at Summit)
If it would be less than $400 at the machine shop, it'll be cheaper that way...
Tom's wants $600 and I'll get my posi back. Strange makes a lightweight chromoly spool ($188.69 at Summit)
If it would be less than $400 at the machine shop, it'll be cheaper that way...
Thread Starter
Team Owner
Joined: Jul 2001
Posts: 182,997
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
