Q:trans shop owners /builders
Q:trans shop owners /builders I have my own opinion but I want the opinion of the guys that put your reputations and shop liabilitys on the line.Q: A customer on the road limps in driving a lets say a 03 z71 xcab 3.73s,60K miles built 5.3 or a mild 6.0 had been swapped in.The customer is on his way across country towing say 7K lbs of trailer,near max of the trucks stock rating.The trans is fried and he tells you to build it with the best parts make the 4L60E into 4L65E and make it as HD& aux cooler and as reasonably possible with your best warrenty(ballpark $3K).Then the customer says I want the highest stall this trans can handle.I will be going over a lot of western mountain passes.
Q :what stall and what diameter converter and brand would you recommend?
This was ment to be kind of a general senerio question,hope the same with the answer.Thanks to all that respond.This could have been in the truck section but this is were the trans pro's hang out.
Im wondering if converter builders that dont build trannys will give different answers.
Q :what stall and what diameter converter and brand would you recommend?
This was ment to be kind of a general senerio question,hope the same with the answer.Thanks to all that respond.This could have been in the truck section but this is were the trans pro's hang out.
Im wondering if converter builders that dont build trannys will give different answers.
Last edited by gonzo 6.0; Nov 22, 2005 at 04:36 PM.
If the guy is going to be towing I would definatly go with a lower stall convertor. You put a high stall conv. in there then just plan on doing the job twice because it wont haul for crap.
I'd go for the low stall and I won't go with a 9 and a half ..I'd do something like this 2600, triple plate tq,con , precision ..... like a 10 inch converter...Its the weight that dicktates the triple disc....I wouldn't want any slip in the pull, and the lower stall to help keep things cool...Hope this helps...Dave.....oh..... happy thanksgiving....
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Launching!
Joined: Jun 2004
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From: Mooresville, NC
I'm a huge fan of small diameter converters, but in your scenario, I'd have to vote for the much larger converter, due to the size of the lockup friction. When we use small diameter converters, we order them with better lockup frictions to make up for the smaller surface area. We also use the TransGo kit to do away with the PWM apply and we remove the checkball at the tip of the input shaft to speed up the apply. I would use larger converter which will give you the increased surface area (if multi-disc is not an option for you) and do all of the 9.5" "tricks" to help is survive. Keep the stall relativley low.
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Verdad Gallardo Thank guys for your input,you confimed what i have been preaching on the truck forum.Some members feel a standard 3000 high stall will be fine for heavy towing,I know how loose my 12" 2400 when I have it loaded,I cant imagine towing hard with anything that was more loose.I have see a 2600 11" discolor the fluid in 300 miles with a medium load,temps never got past 210 on the gauge but I know the fluid was worked hard as it left the trans on its way to the OE cooler.
Here is another thing,a un-named converter builder claims his 3000 stall can handle all towing tasks because they have a special custom built oversized clutch disc.OK fine when its locked up but when pulling hills the converter is not always on,if the converter is not on pulling a long steep grade loaded ,seems that unit will get dam hot quick with a 3k stall unlocked.Coolers can only do so much,disapate heat,bigger coolers just do it a little sooner,they are not a band aid to a bad set up.
Welcome all responses,feel free to disagree.
It was not yank that I was reffering to.My 2400 has been the idea converter for the why I use my vehical.I tow 5Klbs all the time.Several time a year I tow the travel trailer and quad in the truck,everything loaded people included its right at 13.5K LBs.Here in the high desert we have lots of long steep grades.This Yank has done a great job and the fluild has never even slightly dicolored.(maintance helps) All I am saying is I believe this 300mm 2400 Yank is as far as I would go with these kinds of loads on a 4L65e
Here is another thing,a un-named converter builder claims his 3000 stall can handle all towing tasks because they have a special custom built oversized clutch disc.OK fine when its locked up but when pulling hills the converter is not always on,if the converter is not on pulling a long steep grade loaded ,seems that unit will get dam hot quick with a 3k stall unlocked.Coolers can only do so much,disapate heat,bigger coolers just do it a little sooner,they are not a band aid to a bad set up.
Welcome all responses,feel free to disagree.
It was not yank that I was reffering to.My 2400 has been the idea converter for the why I use my vehical.I tow 5Klbs all the time.Several time a year I tow the travel trailer and quad in the truck,everything loaded people included its right at 13.5K LBs.Here in the high desert we have lots of long steep grades.This Yank has done a great job and the fluild has never even slightly dicolored.(maintance helps) All I am saying is I believe this 300mm 2400 Yank is as far as I would go with these kinds of loads on a 4L65e
Last edited by gonzo 6.0; Dec 7, 2005 at 02:26 AM.
Stay about 2400/2600 in 280mm or 300mm size that has the stock size clutch
I have towed over 11K lbs with my 2600 stalled 8.1 test truck for over 56K miles with no overheating or trans oil changes with no issues
If you go to a smaller converter size (245mm) when it comes out of lock up on a grade or passing the RPM's will jump up fast, this is a item that some owners do not want to deal with.
Good luck in your choice
call us for more info
775 826 9955
I have towed over 11K lbs with my 2600 stalled 8.1 test truck for over 56K miles with no overheating or trans oil changes with no issues
If you go to a smaller converter size (245mm) when it comes out of lock up on a grade or passing the RPM's will jump up fast, this is a item that some owners do not want to deal with.
Good luck in your choice
call us for more info
775 826 9955
Originally Posted by Yank
Stay about 2400/2600 in 280mm or 300mm size that has the stock size clutch
I have towed over 11K lbs with my 2600 stalled 8.1 test truck for over 56K miles with no overheating or trans oil changes with no issues
If you go to a smaller converter size (245mm) when it comes out of lock up on a grade or passing the RPM's will jump up fast, this is a item that some owners do not want to deal with.
Good luck in your choice
call us for more info
775 826 9955
I have towed over 11K lbs with my 2600 stalled 8.1 test truck for over 56K miles with no overheating or trans oil changes with no issues
If you go to a smaller converter size (245mm) when it comes out of lock up on a grade or passing the RPM's will jump up fast, this is a item that some owners do not want to deal with.
Good luck in your choice
call us for more info
775 826 9955
