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Discussion Starter · #1 ·
WELL i have been wanting to go to 4.10's for a long time and the thing stoping me is having a 3 speed. I have not been able to find a good 500 od trans for the life of me so today at work i asked one of the guys to check if the 500 was still avail and he found one locally and they will let it go for 1,100.00 IT IS NEW not rebuilt.


now am i to be correct to assume that all the 500 for the rc are the same from 90-93 even with the mangum and non mangum. ????



just want to make sure ok


thanks for any info


 

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An A500 will not last too long if you use your truck like a truck. They die pretty quick because of the weak overdrive unit. I went down that same road, and it was the worst thing I ever did to my truck. My 318 killed it in about 7 months, so imagine what a healthy 340 or 360 would do. Save you money and put a Gear Vendors behind your torqueflite.
 

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Going with an automatic w/ overdrive is actually a PIA. Many of the newer trannys had a few weaknesses with quality and some are now computer controlled. Your best option for an overdrive is to go with an NV4500 or NV5600 manual tranny or the rather expensive Gear Vendors O/D unit. Then again, you can always go with a slightly taller gear ratio and bite the bullet and keep what you already have.

Ed
 

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You don't want a 500 (904) you want a 518 (727). They are good trannies built by a lousy company. I wouldn't buy a new or reman tranny from DC, because they couldn't build it right the first time. Get a junkyard core, build it right using quality parts including a deep pan and a cooler and it will be a good tranny for many miles.
 

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Discussion Starter · #5 ·
oh i thought the 500 was for the 727 oops wrong


I want to build up one but i CANNOT fine one thats in rebuildable cond and when i find one running they want 500.00 for it

at least at work i have a year warr but that a last resort .

 

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Maybe I'm missing something, but your info says that you have a 90 RC. 90 RC's already have the 518.
 

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Discussion Starter · #7 ·
nope i have the 3 speed 727 i wish i had the od
 

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Sounds like a previous owner swapped in the 727 then, because the 90's came with 518's.
 

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Discussion Starter · #10 ·
well the truck has a build date of 89 but it is a 90
so it might have the drive train of 89
 

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According to the 90 fsm, 3 spd auto was not an option for Ramchargers, so someone must of swapped it in.

My 90 was built in late 89 and it has a 518.
 

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Discussion Starter · #12 ·
hummmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm


let me check the prod date again and i will let you know
 

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Just my experience, but I do not think the 518 is a weak tranny. The OD unit most definitely is, no argument there. If you keep the OD off everywhere but the highway, you should be fine. I have abused several 518's (both 46RH's and 46RE's) and if you keep the OD disengaged for cold whether (the RE's have a cold weather lock-out...now) and the "rough stuff" IE off-roading, it should live a happy life. My one suggestion is to run TWO coolers, either the factory radiator and a separate one in series, or two aftermarket coolers in series. Heat is what kills these trannies.

Wish I could find a 500 od or 518 od NEW for $1100....they are more like $3500 up here (new)

Just my 0.02

-SM
 

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Discussion Starter · #14 ·
well i just foundout that i can get the reman 518 with a 3 /36 warr for 1250.00 or new for 1150.00

i always turn o/d off unless on the highway



so anymore input?????????????????????/
 

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Discussion Starter · #15 ·
now if i do end up getting the od which should /can i go to and have about the same rpm range 3.90's or 4.10's or what ???????????????????
 

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Overkill said:
i always turn o/d off unless on the highway
You have the O/D switch between the 4x light and message center, right? I believe you have the 518 in it.

Here's a calculator to help figure out rpm.

Ted
 

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I know that the 727 was optional in the '89 models, so maybe in early '90 too? Maybe they had some 727's left over that they were trying to use up.
 

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Discussion Starter · #19 ·
sorry i always turn od off unlsee on the highway when in other cars man i cant forget the oter part lol
 

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Overkill said:
now if i do end up getting the od which should /can i go to and have about the same rpm range 3.90's or 4.10's or what ???????????????????
Depends what you have in there now... I will assume 3.55's and 31" tires as stock. With no OD, your effective final drive is 3.55:1

For 31" tires with an OD trans (assuming OD is 0.7:1):
3.90*.7=2.73:1 effective final ratio
4.10*.7=2.87:1
4.56*.7=3.19:1

For 33" tires with an OD trans:
3.90*(31/33)*.7=2.56:1 effective final ratio
4.10*(31/33)*.7=2.70:1
4.56*(31/33)*.7=3.00:1

For 35" tires with an OD trans:
3.90*(31/35)*.7=2.42:1
4.10*(31/35)*.7=2.54:1
4.56*(31/35)*.7=2.83:1

-SM
 
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