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Re: When is a Pro gearset required?
[Re: MR_P_BODY]
#1341595
11/26/12 10:24 AM
11/26/12 10:24 AM
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Joined: Jan 2003
Posts: 4,448
Phoenix, AZ
MoparBilly
master
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master
Joined: Jan 2003
Posts: 4,448
Phoenix, AZ
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What Mr. P-Body said.
It has more to do with impact than Torque/HP. A heavy stick car, or leaf spring car that bucks around, hook-spin-hook, those are the situations that are more likely to break a street gear.
My 70 Challenger has a back braced 8 3/4, and in 1100 passes, I've broke one ring gear, and that was on a marginal track with a heavy dose of Nitrous.
"Livin' in a powder keg and givin' off sparks"
4 Street cars, 5 Race engines
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Re: When is a Pro gearset required?
[Re: astjp2]
#1341602
11/27/12 09:51 AM
11/27/12 09:51 AM
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Joined: Apr 2004
Posts: 12,339
somwhere
smokinwoody
I Live Here
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I Live Here
Joined: Apr 2004
Posts: 12,339
somwhere
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Quote:
With a 9, you should be breaking parts at that low of power!  Jana 76 all the way! 10.5" ring gear in a 60 housing.
Quote:
when you make power/torque that can shatter teeth on ring/pinion...
thats why I am using a pro-gear and a spool on the street in my 9" that will be installed in my 63 Dodge...with about 700hp and over 650lbs ft of torque, I would be breaking street gears and eating differentials..
hypothetically speaking of course....
are you trying to say that I shouldn't be breaking gears at my power setting??....
I have Dana 60 in my Camaro with street gears and a differential...its a 4spd and I have launched at 6700 rpm without a whimper...thats why I changed out the 12 bolt that was in it...
I bought the 9" from a guy that was getting out of racing...all new stuff...the gears are A/FX pro gears and are setup to allow gear oil to climb more effectively over the rear of the ring gear...in order to cool it better on the street....I have talked to many guys that set up gears and had asked if a diff and street gears would be a better way to go given my setup....they all agreed ...Pro-Gears and a spool....
hope any of this helps you Ted...
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Re: When is a Pro gearset required?
[Re: tboomer]
#1341603
11/27/12 10:21 AM
11/27/12 10:21 AM
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Joined: Oct 2006
Posts: 4,590
Indy
joshking440
Lunch is on me!
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Lunch is on me!
Joined: Oct 2006
Posts: 4,590
Indy
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Quote:
Like the title says..When do you need a Pro gear ring and pinion set? Discuss! 
My car made 1300 hp and 1000 ft lbs of torque
Street Gear was fine
Jason Ruckert of VP made WAY more power than me and he ran a street gear with no problems
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Re: When is a Pro gearset required?
[Re: tboomer]
#1341605
11/27/12 11:14 AM
11/27/12 11:14 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
My car made 1300 hp and 1000 ft lbs of torque
Street Gear was fine
Jason Ruckert of VP made WAY more power than me and he ran a street gear with no problems
Yes...But were you guys launching off of a tranny brake?
I have been from day 1
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Re: When is a Pro gearset required?
[Re: tboomer]
#1341609
11/27/12 11:55 AM
11/27/12 11:55 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Raff...My car is 3400#...Won't this come into play?  I can only afford to do this once! 
Weight kills.... even if you go with the pro gear
it will only last so long, they're softer to take
the shock but they start to roll the teeth after time
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Re: When is a Pro gearset required?
[Re: Gearhead383]
#1341610
11/27/12 12:00 PM
11/27/12 12:00 PM
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Joined: Jul 2005
Posts: 336
Creston, Iowa
340man4ever
enthusiast
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enthusiast
Joined: Jul 2005
Posts: 336
Creston, Iowa
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TBOOMER- Your car is no light weight... Your new heads have received some "Radar Love" Its gonna make a lot more power...... Things can get ugly with a drivetrain failure and a torqueflite....(Dont ask me how I know) I think I could sleep better at night with a Pro Gear in that thing...... 
Curator at Adams County Speed Shop
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Re: When is a Pro gearset required?
[Re: RADAMX]
#1341617
11/27/12 08:44 PM
11/27/12 08:44 PM
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Joined: Dec 2006
Posts: 3,667
Arizona
Chris'sBarracuda
master
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master
Joined: Dec 2006
Posts: 3,667
Arizona
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Quote:
I have never broken a street gear and hope I never do .
I have been running OEM 3.89 gears for hundreds of passes .
3345 lbs
trans break
Spool
35 spline axles.
aluminum strange center section
launch on first stage nitrous
1.36 60 ft
8.95 at 157mph
Same here.. Street Gear.. 3000# Barracuda.. leaving @ 5800-6200 with a P/G and a brake.. 9.40's to 8.70's (1.23-1.30 60') always a street gear 9" Ford.. No breakage ever. Broke low gear sets before though.. 
As a matter of fact, the only gear that ever went bad in any of my cars was a pro gear..
Pinks All Out Video.. 9.20's
https://www.youtube.com/watch?v=kCePPblw...mp;feature=plcp
Chris..
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After all...Yours has only ran 7.79...Step away from the Crown Royal!! 
I had a pretty bad day...But it is getting better! For as many passes as I put on this thing,maybe the standards will work ok...