stall converter question - Great Lakes 4x4. The largest offroad forum in the Midwest

Go Back   Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Dodge Tech
GL4x4 Live! GL4x4 Casino

greatlakes4x4.com is the premier Great Lakes 4x4 Forum on the internet. Registered Users do not see the above ads.
Search
Reply
 
Thread Tools Search this Thread
Old March 27th, 2011, 10:21 PM   #1
CHEROKEEMUDMAN01
Senior Member
 
CHEROKEEMUDMAN01's Avatar
 
Join Date: 10-03-09
Location: warren mi
Posts: 732
iTrader: (13)
Mentioned: 0 Post(s)
Default stall converter question

i am having my trans built and i had an idea of what i wanted in mind and my trans guy has another. here is the specs a bone stock 318 from 1986 a 727 trans 231 t case and 4.88 gears with a 35" tire. i was thinking a 2500 stall would be good but he really wants me to go with a 3000. what is everyones thoughts. i mud bog and do some rock crawling. i dont drive it much on street but i dont want to make it not street friendly.
CHEROKEEMUDMAN01 is online now   Reply With Quote
Sponsored Links
Advertisement
 
Old March 27th, 2011, 10:27 PM   #2
ChevyRacer1981
Throw'in turtles........
 
ChevyRacer1981's Avatar
 
Join Date: 05-07-08
Location: Sagnasty / MI
Posts: 2,358
iTrader: (32)
Mentioned: 0 Post(s)
Default

2500 is not very street friendly. 3000 is even worse.
ChevyRacer1981 is offline   Reply With Quote
Old March 27th, 2011, 10:34 PM   #3
bdd1469
bdd
 
bdd1469's Avatar
 
Join Date: 04-12-10
Location: alto mi
Posts: 2,066
iTrader: (1)
Mentioned: 0 Post(s)
Send a message via Yahoo to bdd1469
Default

you dont need more then 2000 with a stock cam, any more then that and you will just be losing torque and building extra heat.take the money you saved and buy a really nice tranny cooler.
bdd1469 is offline   Reply With Quote
Old March 28th, 2011, 08:58 PM   #4
CHEROKEEMUDMAN01
Senior Member
 
CHEROKEEMUDMAN01's Avatar
 
Join Date: 10-03-09
Location: warren mi
Posts: 732
iTrader: (13)
Mentioned: 0 Post(s)
Default

got a 34,000 gvw cooler on jeep. thinking of throwing a mild cam in motor while i have it pulled from jeep. is a 2500 going to be to much then also
CHEROKEEMUDMAN01 is online now   Reply With Quote
Old March 28th, 2011, 09:20 PM   #5
bigblockford79
Big Block Ranger
 
bigblockford79's Avatar
 
Join Date: 05-11-08
Location: Hamilton, MI
Posts: 2,741
iTrader: (24)
Mentioned: 0 Post(s)
Default

You have conflicting uses for converter choice. For rocks, technical wheeling and street driving, the lowest possible stall is best to be able to keep the best control or your vehicle and not break so many parts. Plus you'll look like an asshole doing essentially 2500-3000 rpm clutch dumps where finesse is key.

For the mud bogging you want the opposite - here you want the converter that will put you at or very near the peak power curve of you're engine. This is best set-up by running the engine on a dyno so you know exactly where power starts building and where it fall off. A 3000 rpm stall speed does you no good if your cam stops producing power at 4500 rpm.

My suggestion to you is DO NOT LISTEN to the tranny guy and decide yourself what type of driving you want the jeep to best suit. Then, figure out what cam you have or want and pick a converter stall speed just a couple hundred over the rpm the cam begins to make power. Also, be realistic when choosing a cam based on the jeeps more dominant usage for most off and on road situations a cam producing most of its power in the lower rpms is much more effective than the alternative.

EX: My 302 has a cam that starts its power curve at 1800 rpm, I chose a converter that stalls at 2000-2200. It worked pretty good, I would have rather had a lower rpm for offroad, but the cam was worthless at low rpm.
__________________
If you can read this, thank a teacher. If you can read it while pooping, thank Bill Gates!

"A girls butt hole is like a 9 volt battery. You know its wrong, but eventually you put your tongue on it."
bigblockford79 is offline   Reply With Quote
Old March 28th, 2011, 09:43 PM   #6
frdboy
Wishin' I waz fishin'
 
frdboy's Avatar
 
Join Date: 03-29-06
Location: Grand Haven, MI
Posts: 10,800
iTrader: (25)
Mentioned: 6 Post(s)
Default

Quote:
Originally Posted by bigblockford79 View Post
You have conflicting uses for converter choice. For rocks, technical wheeling and street driving, the lowest possible stall is best to be able to keep the best control or your vehicle and not break so many parts. Plus you'll look like an asshole doing essentially 2500-3000 rpm clutch dumps where finesse is key.

For the mud bogging you want the opposite - here you want the converter that will put you at or very near the peak power curve of you're engine. This is best set-up by running the engine on a dyno so you know exactly where power starts building and where it fall off. A 3000 rpm stall speed does you no good if your cam stops producing power at 4500 rpm.

My suggestion to you is DO NOT LISTEN to the tranny guy and decide yourself what type of driving you want the jeep to best suit. Then, figure out what cam you have or want and pick a converter stall speed just a couple hundred over the rpm the cam begins to make power. Also, be realistic when choosing a cam based on the jeeps more dominant usage for most off and on road situations a cam producing most of its power in the lower rpms is much more effective than the alternative.

EX: My 302 has a cam that starts its power curve at 1800 rpm, I chose a converter that stalls at 2000-2200. It worked pretty good, I would have rather had a lower rpm for offroad, but the cam was worthless at low rpm.
Well said, I would think the 2500 ish would work out good for ya.

Quote:
Originally Posted by ChevyRacer1981 View Post
2500 is not very street friendly. 3000 is even worse.
Not really true, I drive my Mustang all over with an 8" converter that goes 5600+ stall.
__________________
Cheap Thrills Off Road

2003 F-250 4X4 7.3 PSD Crew Cab

1971 Bronco
frdboy is offline   Reply With Quote
Old March 29th, 2011, 09:33 PM   #7
CHEROKEEMUDMAN01
Senior Member
 
CHEROKEEMUDMAN01's Avatar
 
Join Date: 10-03-09
Location: warren mi
Posts: 732
iTrader: (13)
Mentioned: 0 Post(s)
Default

thanks for help guys. ended up going with a 2400 and hopefully it will work out ok.
CHEROKEEMUDMAN01 is online now   Reply With Quote
Old March 30th, 2011, 06:21 PM   #8
mprmn08
Senior Member
 
mprmn08's Avatar
 
Join Date: 01-08-09
Location: grandville, mi
Posts: 252
iTrader: (0)
Mentioned: 0 Post(s)
Default

the biggest thing is keeping it cool. the 2400 should be fine for what your doing but be very generous with coolers. the higher the stall the more heat it will make. the hardest part is choosing a convertor for a street car that you have a radical cam in but your situtation should be fine.
mprmn08 is offline   Reply With Quote
Old March 30th, 2011, 06:36 PM   #9
SANDVIPR
Yeeeee Haaaaw!
 
SANDVIPR's Avatar
 
Join Date: 09-10-06
Location: Holland
Posts: 7,507
iTrader: (58)
Mentioned: 5 Post(s)
Default

I ran an 1800 stall in my Dakota years ago with pretty much the same set-up you are running. It was great for street and sand, but that was before I got into the rock crawling scene.
I don't know that I'd want over 2K doing that, but for everything else you do, I think that you'll like it.
SANDVIPR is offline   Reply With Quote
Reply
Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Dodge Tech

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 07:47 AM.


Powered by: vBulletin, Copyright 2000 - 2012, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Page generated in 0.23266 seconds with 47 queries