2500 stall wow!!
Thread Starter
Safety Car
Joined: May 2005
Posts: 4,176
Likes: 7
From: Jennings LA
2500 stall wow!!
I installed a 2500 stall convertor in my 400 horse 383 and it is unbelievable the difference it made. it is a totaly new driving experience
I mainly did it so the car would idle in gear but the aceleration is unreal. it will break the rear tires loose if you nail it going 20 mph and this is with the stock 273 rear gears. it sure has a traction problem latley but is a blast to drive. best $300.00 I ever spent
I mainly did it so the car would idle in gear but the aceleration is unreal. it will break the rear tires loose if you nail it going 20 mph and this is with the stock 273 rear gears. it sure has a traction problem latley but is a blast to drive. best $300.00 I ever spent
Race Director
Joined: Sep 2002
Posts: 10,362
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From: San Diego - Deep Within The State of CONFUSION!
Originally Posted by gator79
I installed a 2500 stall convertor in my 400 horse 383 and it is unbelievable the difference it made. it is a totaly new driving experience
I mainly did it so the car would idle in gear but the aceleration is unreal. it will break the rear tires loose if you nail it going 20 mph and this is with the stock 273 rear gears. it sure has a traction problem latley but is a blast to drive. best $300.00 I ever spent
I mainly did it so the car would idle in gear but the aceleration is unreal. it will break the rear tires loose if you nail it going 20 mph and this is with the stock 273 rear gears. it sure has a traction problem latley but is a blast to drive. best $300.00 I ever spent
I figured the new motor would run great but it didn't. So I yanked the trans back and put in a B&M 2500 stall convertor and WOW what a difference. It's a different car.
Thread Starter
Safety Car
Joined: May 2005
Posts: 4,176
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From: Jennings LA
Originally Posted by PhotoVette1
I really need to do this too--How did it effect your highway rpm's?
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Team Owner
Joined: Apr 1999
Posts: 21,953
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
If you have a lockup OD auto tranny it's even better if you install 3000+ I've had a 9.5 inch 3800 stall for nearly 5 years now. The smaller diameter is lighter so it's like running an aluminum flywheel.
Race Director
Joined: Sep 2004
Posts: 11,874
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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Originally Posted by RedBad1979
How can I identify my stall converter ? I know mine is aftermaket with a higher stall speed, 2200 or 2500 ... is there anything stamped on there ?
Race Director
Joined: Sep 2002
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From: San Diego - Deep Within The State of CONFUSION!
Originally Posted by PhotoVette1
I really need to do this too--How did it effect your highway rpm's?
Much more slippery at a stoplight though. You'll notice shifts feel softer unless you GET ON IT. Then the shifts are very strong.
Thread Starter
Safety Car
Joined: May 2005
Posts: 4,176
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From: Jennings LA
Originally Posted by PhotoVette1
What about shop costs to install it? How to chose a brand? I've been considering this mod for awhile and I've been confused by the choices... Thanks!
I went with a hughes convertor, I installed my own in about 3 hours but I have access to a lift. labor should not be more than 3 or 4 hours at whatever the shop rate is.
Burning Brakes
Joined: Nov 2003
Posts: 990
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From: North Texas
Since weight of the vehicle and HP of the engine effect the actual stall speed, do you guys find that the advertised Stall speed correct for the Vette?
I can't decide between a 2000 and a 2400.....
I think I read somewhere that the stall speed should be 500 rpms below peak torque.
I can't decide between a 2000 and a 2400.....
I think I read somewhere that the stall speed should be 500 rpms below peak torque.
Race Director
Joined: Sep 2004
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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Originally Posted by 1970-Bronze
I can't decide between a 2000 and a 2400.....
Team Owner
Joined: Apr 1999
Posts: 21,953
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Originally Posted by 1970-Bronze
Since weight of the vehicle and HP of the engine effect the actual stall speed, do you guys find that the advertised Stall speed correct for the Vette?
Le Mans Master
Joined: Oct 2004
Posts: 5,269
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From: Orlando Florida
St. Jude Donor '05
Originally Posted by bobs77vet
step on brake and slowly accelerate.....watch the tach...when the car starts jumping and bucking note the RPM that is the approximate stall speed.
Safety Car
Joined: May 2001
Posts: 3,758
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From: Surrey
Stock stall speed for my '81 was 1800 rpm & I've changed that to a 2200rpm when I fitted an OD trans. Much better when leaving the line in a hurry, don't notice any difference in normal heavy traffic driving ie. it pulls away at low revs as it always did - but plant the throttle & the revs ramp up & it takes off much better than it used to 
Probably why mine only slips up to 900rpm 
Originally Posted by gkull
So motor TQ makes a difference as to how much they slip
Burning Brakes
Joined: Nov 2003
Posts: 990
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From: North Texas
Originally Posted by gkull
I ask for a 3000 stall and even told them that i had a hot rodded 383. It was more like 3500 stall. Going down the freeway you could just blip the throttle and it will jump up to 3500 without going anyfaster. Now with a 427 it's gone up to 3800 rpm. So motor TQ makes a difference as to how much they slip
However -it seems like the 2400's are built better and smaller so less rotating mass.
For a TH400 - I see B&M and TCI. Is that what everyone is running or are you going more high end?
Anyone know what the STR's for the B&M or TCI are? I can definitely see where different STR's can make a huge difference between units.
Race Director
Joined: Sep 2004
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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
remenber the higher stall speed will sound a little funny since its slipping alot longer......kind of like those TV car movies where the automatics are always shifting constantly...some people even describe them as "mushy"....