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Coan vrs pi converters

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Old Dec 25, 2011 | 03:33 PM
  #1  
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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

Last edited by GTA; Dec 25, 2011 at 03:34 PM. Reason: Spelling
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Old Dec 25, 2011 | 06:11 PM
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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.
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Old Dec 25, 2011 | 08:12 PM
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Re: Coan vrs pi converters

Yeah mild comp 268 I too like the wot but
Not the low speed feel in town
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Old Dec 30, 2011 | 10:20 PM
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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.
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Old Dec 31, 2011 | 10:19 AM
  #5  
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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.....
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Old Dec 31, 2011 | 11:24 AM
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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....
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Old Dec 31, 2011 | 12:42 PM
  #7  
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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
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