Author Topic: Stock stall speed converter vs higher  (Read 12207 times)

Offline Ornamental

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Re: Stock stall speed converter vs higher
« Reply #15 on: October 15, 2010 - 09:07:40 PM »
Hmmm that's interesting...one of my planned upgrades is going to a 2500 3000 conevrter from stock. I have read that it would not be that bad. Could it be a bad converter?

What are the specs on your engine?
'72 340 with a stock bottom end.
Eddy Air Gap intake, heads ported and milled to 10.25:1 on stock bottom end.
Holley 4150 750cfm
Camshaft is a 238 Degree, .474 Lift (Mopar Performance Purple Cam, CC-4452992)


Hmmm, I have a 25-2800 with a mildy built 360 (est 350hp) been having issues with really early shifts under no load(in drive well before 20) with a clunk, almost sounds like tranny is ahead of the engine & then kicks in with that clunk?
Seems to shift well manually,nice & firm under load, Reverse is a little weird sometimes, like it doesn't wanna go backwards a lotta gas to move it, other times it rolls nice with a little gas.
Seems like some of the same issues? Rich
Not quite, the reverse is consistently demanding higher revs to move. The shifts also demands some rpm to take place.

Sure, it will run "ok", but if embarrassment is a concern, then get ready for a whole new kind with that 400 HP engine between stoplights, against that new Mustank GT....
You have misunderstood the embarrasment issue.  ;)
There will always be someone faster, that's an honest thing not to be ashamed of. Well, even so, currently my E46 BMW 330CI absolutely kills my Chally, and that's just not right.
Not knowing to drive your car, now that's reason for embarrassment. Even if it's just appearing as so. Sounding like I can't to something so banal as change gears is an embarrassment.  :eek4:


Anyway, the latest plan is to take the Chally to a local Mopar guru and let him fiddle with it next year. Now it's storage season in Norway.
You guys and gals are familiar with Pro-Touring, and maybe even Pro-Parking cars at shows. My Chally is a Pro-Storage car. Either I'm at sea, or it's winter. Or something is wrong with the Chally. Or I have to be somewhere else. Or... :bricks1: :pullinghair:




Panther Pink '72 Challenger Rallye.
Grey '70 Challenger R/T

-There are two kinds of pedestrians: The quick and the dead.

***Per Arne***




Offline AARCUDADEN

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Re: Stock stall speed converter vs higher
« Reply #16 on: October 15, 2010 - 10:35:58 PM »
Ornamental, that convertor is not right for your application. The best way to get a good stall convertor to work for your car is to call a replical convertor dealer and give them all the proper specks of your car and have them build you one for your car  :thumbsup:
Dennis,Ohio

Offline tactransman

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  • 1973 Challenger- Member here since April 14, 2006
Re: Stock stall speed converter vs higher
« Reply #17 on: October 15, 2010 - 11:24:20 PM »
That converter should work fine for your car. you either got a bad one or have an engine tuning problem.
Terry-tactransman 
Torqueflite/Automatic Transmission Specialist
Union, Mo.
Give a man a fish and he eats for a day,teach him to fish and he eats for a lifetime.

Offline Ornamental

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Re: Stock stall speed converter vs higher
« Reply #18 on: October 16, 2010 - 08:34:15 PM »
That converter should work fine for your car. you either got a bad one or have an engine tuning problem.
I suspect that the engine tuning is a problem, and I shall give that a go to se if the gear changes can be improved.

But even so, I still have a converter that wants a lot of rpm to start moving in the first place.
It's difficult to believe that the engine tune has something to do with that.
Panther Pink '72 Challenger Rallye.
Grey '70 Challenger R/T

-There are two kinds of pedestrians: The quick and the dead.

***Per Arne***

Offline tactransman

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  • 1973 Challenger- Member here since April 14, 2006
Re: Stock stall speed converter vs higher
« Reply #19 on: October 16, 2010 - 11:15:02 PM »
It sounds like the stator sprag is bad in the converter,making it a "fluid coupling" and not a TORQUE converter.

http://www.tciauto.com/Products/TechInfo/torque_converters_explained.asp

"The stator, which changes fluid flow between the turbine and pump, is what makes a torque converter a torque converter (multiplier) and not strictly a fluid coupler."
Terry-tactransman 
Torqueflite/Automatic Transmission Specialist
Union, Mo.
Give a man a fish and he eats for a day,teach him to fish and he eats for a lifetime.