Coan vrs pi converters
Thread Starter
Senior Member

Joined: Jan 2001
Posts: 532
Likes: 1
From: Canada
Car: 1992 GTA
Engine: running
Transmission: working
Axle/Gears: both
Coan vrs pi converters
Hi all
I currently run a 3200 10 inch coan converter with 3.23 gear
Would swapping to a vig 9.5 2800 be worth it??
I'm looking for more street perf car is modded with
Well over 400 hp
Thx gta
I currently run a 3200 10 inch coan converter with 3.23 gear
Would swapping to a vig 9.5 2800 be worth it??
I'm looking for more street perf car is modded with
Well over 400 hp
Thx gta
Last edited by GTA; Dec 25, 2011 at 03:34 PM. Reason: Spelling
Joined: Aug 2007
Posts: 29
Likes: 0
From: Fleming Island, FLorida
Car: 72 Chevelle
Engine: 468
Transmission: Muncie
Axle/Gears: 355
Re: Coan vrs pi converters
It depends on the cam and how your tranny is set up.
I ran that same converter, it put out great performance, but it became tiresome for me on street. I've replaced it with a TCI 2800 and I like it a lot better.
If you know what cam you’re running you can get the manufactures recommended stall from their website.
I ran that same converter, it put out great performance, but it became tiresome for me on street. I've replaced it with a TCI 2800 and I like it a lot better.
If you know what cam you’re running you can get the manufactures recommended stall from their website.
Joined: Mar 2004
Posts: 1,643
Likes: 50
From: Manitoba
Car: '91 GTA
Engine: 421sbc
Transmission: Powerglide
Axle/Gears: Ford 9" with 3.89
Re: Coan vrs pi converters
Do a gear change 1st and see what happens.
A 3.73 would be a lot better.
Actually for the little amount of driving you do, you should get a 4.10 gear and some drag radials.
A 3.73 would be a lot better.
Actually for the little amount of driving you do, you should get a 4.10 gear and some drag radials.
Thread Starter
Senior Member

Joined: Jan 2001
Posts: 532
Likes: 1
From: Canada
Car: 1992 GTA
Engine: running
Transmission: working
Axle/Gears: both
Re: Coan vrs pi converters
Hey bud,
long time no talk
do you think 4.10 would be a bit much on the street?? I guess gears are a bit cheaper than a converter.....
long time no talk
do you think 4.10 would be a bit much on the street?? I guess gears are a bit cheaper than a converter..... Joined: Mar 2004
Posts: 1,643
Likes: 50
From: Manitoba
Car: '91 GTA
Engine: 421sbc
Transmission: Powerglide
Axle/Gears: Ford 9" with 3.89
Re: Coan vrs pi converters
All depends what you want.
With a 4.1 gear and you in 3rd gear at 6000rpm you would be going about 112mph
With a 3.73 gear and you in 3rd gear at 6000rpm you would be 124mph.
Since you never race your car and only do short trips, 4.10's would be the best if you had drag radials. Without DR's, you would shred the tires off.
A 3.73 gear would sacrifice a little mpg but give you more grunt on the bottom rpms.
You got a series 3 carrier in your diff right?
And you put on my diff girdle?
Personally, I dont think switching converters will give you what you want....
With a 4.1 gear and you in 3rd gear at 6000rpm you would be going about 112mph
With a 3.73 gear and you in 3rd gear at 6000rpm you would be 124mph.
Since you never race your car and only do short trips, 4.10's would be the best if you had drag radials. Without DR's, you would shred the tires off.
A 3.73 gear would sacrifice a little mpg but give you more grunt on the bottom rpms.
You got a series 3 carrier in your diff right?
And you put on my diff girdle?
Personally, I dont think switching converters will give you what you want....
Thread Starter
Senior Member

Joined: Jan 2001
Posts: 532
Likes: 1
From: Canada
Car: 1992 GTA
Engine: running
Transmission: working
Axle/Gears: both
Re: Coan vrs pi converters
I wonder if there would be a great perf diff between the 3.73 and 410 gears
Yes it is a 3 series carrier
Yes it is a 3 series carrier
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