Lots of confusion on using my 999 trans for a street/strip car .its a 999 out of a 1988 Dakota 3.9 ,Looking to use it behind a healthy 5.2 Magnum ,I don’t want lockup which this trans has.Whats needed to put a non lockup converter in this trans .
Parts needed to convert 999 to non lockup
- Thread starter djaponi3
- Start date
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360duster
Well-Known Member
i got the same question some days ago....check this out:
999 Lock-Up Transmission / change input shaft to non LU?
Michel
999 Lock-Up Transmission / change input shaft to non LU?
Michel
rmchrgr
Skate And Destroy
A different transmission. If you don't want lock up, don't even bother with that 1988 unit. I've said this many times and 360duster knows - trying to make a 1978-up lock-up unit into a non lockup trans. is really difficult if not impossible because of the intricacies of particular parts involved and actual availability of said parts.
Unless you are over 600 hp (which I doubt with a 318 but hey, what do I know) or if the truck is real heavy, any garden-variety 904 variant should be fine as long as you build it with good parts. There are thin clutch/steel sets that you can get for more holding power. Billet spring pack and servos, 4.2 lever, good bands and struts, good valve body, done. Either A&A or Cope Racing should carry all this stuff.
mderoy340
Well-Known Member
I run a 84 Diplomat lockup tranny with a Turbo Action 10" converter. Converter has no clutch. Made a brass plug to block converter circuit in the valve body and installed a TF2 shift kit. Trans has low gear set and 5 clutch up front, works great with my 400hp +-50 sbm.
The 999 seems to have all the goodies from what I’ve read like wider bands more clutches better planetaries .What 904 should I look for as far as years
Is that a specialty converter your running
Yes lack of converter options
rmchrgr
Skate And Destroy
Exactly the info I was looking for Thankyou !
mderoy340
Well-Known Member
I built my car as a street/strip and did not want a locking converter. I drive 50 miles to the track, run the crap out of the car, and return home. The turbo Action 10" S800 is a tight performance converter. You can get it with 26 spline count to fit a lockup input shaft. Call and talk with Paul Forte. Any good converter can set you up.
Is Paul Forte from Turbo Action for Contacting ?
rmchrgr
Skate And Destroy
Paul Forte is the owner of Turbo Action. Nice guy, he will help you. So will Rick Allison or one of his guys from A&A or John Cope. Or Lenny from Ultimate or Dynamic Converters in Delaware or....
Read through some of these posts on Moparts, might give a clearer understanding. Or not.
converter / lockup converter | Unlawfl's Race & Engine Tech | Moparts Forums
904 Lockup Trans Question | Moparts Question and Answer | Moparts Forums
Lock Up Torque Converter??? | Moparts Question and Answer | Moparts Forums
Read through some of these posts on Moparts, might give a clearer understanding. Or not.
converter / lockup converter | Unlawfl's Race & Engine Tech | Moparts Forums
904 Lockup Trans Question | Moparts Question and Answer | Moparts Forums
Lock Up Torque Converter??? | Moparts Question and Answer | Moparts Forums
I want to stick with the trans from my 1988 3.9 Dakota .My game plan would be the custom non lockup converter a good rebuild my only question is the transgo tf3 kit .I want full manual control however Transgo site says tf3 Not for lockup transmissions ! Any input ?
And I Don’t Mean to Shrug Off Any Info You Have All Provided Me .I Am Grateful for All of Your Input the 998/999 Trans Internals However Have Me Intrigued and Believing This as the Best Available 904 Variant !!!
mderoy340
Well-Known Member
Call Transgo tech line. When I put a TF2 in mine they answered a few questions I had.
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