stock600

Im ready now to get underway on a cummins powered drag car. Were doing one now for for brotherinlaw but its a 1/2 chevy sb p/u and his using a nv4500 for now [ temporary ] due to the expense of a good auto. Im not wasteing any time going that way ive got that now with my truck! There fun to drive but to slow at the track[to compair that is]. Question is im doing a 12 valve motor and want a 3 speed tranny to build stout. Im going to do it right the first time, id like to go the 2 spd. glide route but im not wanting to get into expensive adaptors and starters and all that. I know the 47 and 48res are out because their computer controled and im not fighting that. So i need a old simple 3 spd. that CAME behind a 5.9 at some time or nother, to take to my race car trans. shop. The only one i know of is the 727, ive heard some on it on the 1st gen site, and theres a a518 but i think its a 4 speed. I want a simple 3 speed and ill gear accordilly to make the mph i need. BTW it will be 1/8 only. Any tranny advise i would really apreciate!

wannadiesel

727 it is. 518/46RH is basically a 47RH without the lockup converter. Or you could use a TH400 (or even a Powerglide) with the adapter out of a bread truck/Frito Lay van.

stock600

Thanks dave, is this all my options? Ive heard the adaptor from the bread trucks put the engine at a 10* angle, im not sure about that have you seen this your self, thats pretty darn crooked. What auto did 94-98 use. And whats your opinion on the 727, im sure good manual vb and shift kits and such are available for them correct. Thanks

wannadiesel

Yes, the bread truck adapter does angle the engine a little off vertical but not enough to affect the oiling system. It would sure keep the competition guessing to have the motor in there a little off kilter.

'94-'96 was the 47RH, then they switched to the 47RE.

The 727 is stout, you can build it to suit your needs. Just wanted to let you know that if you have your heart set on a 'glide it's not as expensive as you might think to bolt one on.

stock600

Thanks a lot for the info Dave. What auto are you sled puller guys using in your 1st gen trucks? Yall use the adaptors and run like a built 400, or just build the tar out of the 727?? And on the 727 is that all thier called, is there a diff. between this one and the old tf 727 that were behind all the big gas motors? Im hunting a core and i want the correct bellhousing pattern, my luck id ask for a 727 and it be for the back of a 383-440 wedge. Dont want these issues, thanks guys- Ryan

JDGnut

There are adapters to run the Chevy transmissions behind the cummins.. some of the conversion guys are running them.. Talk to some of the dragester guys and see what they are running...

stock600

Ya i know theres other pricey adapters to get there [14-1500.00] but hoping to avoid that and just run a tranny that came behind a cummins already and just build it right. But im comited to the project and will do what it takes. I was thinking if i didnt have to spend that 1500 there it would go a ways tward axles, slicks, wheels, gear set and spool. Does anyone know if there are diff. belhousing patterns for the 727? Is one dedicated for the cummins engine, i feel this will be my first choise[727] and the bread truck adapter/TH400 second. Im just wanting to keep it simple as posible and less hybrid as i can, for parts replacement and such. Any more 727 info or advise?? Years the tranny was in service and such.........................

stock600

Anyone, i would apreciate the years the 727 was used behind the cummins and also a length on the tranny. Im measuring everything for fit, and hoping the 727 is no longer than 28.5" like the TH350 i measured earlier in my other drag car. Any info or advise on this tranny would help a lot at this point. Also wondering about the motor plate with the 727, is it the same with all autos or even manuals? Any comments please. My tranny guy is also trying to help hunt down a core to build.

Kenny D

Im a big mopar guy ive got the 440 bb neon for sale in the classified NEED ONE

As far as the 727s go they made a few difrent styles the small block version and the big block version and the big block truck vertion for motor homes and stuff if i were you i would try to find a motor home version they had about 30% more clutch surface wich in turn allows it to handel more tourqe they made these in the early 70s some other years to tho. These trannies did have a yoke on the rear instead of the slip yoke like the cars had you can change the tailshaft tho. Another thing about the 727s is they flywheel is part of the TC mite not matterfor you THE 727 is an awsome transmition ive had about 5 of these in evrything from my GTX to my Ramcharger easy to beef up to besides we keep it all mopar its cooler

stock600

Thanks, but your saying thiers no differance between any ol TF727 and the ones that came in the early 1st gen dodges with the cummins? I was hoping there would be a specific much stronger version JUST for the 5.9 that had larger shafts, clutches and all. I need to do this right the first time, i know people are building the 48res and having good luck with them, i just dont know what thier doing about computer contols if its in other than a late model truck. If the 727 thing dont pan out ill prob. go to the exp. spacer and a short glide. I wished more pullers with autos would chime in and tell what they run?????...........................

jughead

v-10 dodge and cummins diesel have the same bolt pattern. the rest will not fit without a special adapter. i have been running my 727 n street and strip for 6 years with no problems but my engine doesnt produce the power that your will

stock600

jughead, thanks for the reply- is this your 1/2 ton w/ the 12 valve your talking about. With those inj. and plate i would think it would run great. I would expect it would do better than your 90 in your sig? What rear gear did you go with in the 1/2 ton p/u? 9.65 for your 90 sounds pretty strong, doesnt the 1/2 ton dodge walk all over it though. Do you know what years dodge made the 727 for the cummins? Thanks man

jughead

89 through part of 91 for the 727. the 82 runs 8.6s on the 1/8. found out later that the engine in the 82 is weak. still looking for a solid 94 - 98 12 valve. think mid 7s is do able with 82 and not a lot of expense.

stock600

Thanks again for the years 89-91.5 8.6 is very impressive and you think mid 7's wont be so tuff. I wished youd go more into details on your setup, turbo, etc.... This is my goal as well to get in the 7's i should be a lot lighter than you. I would love to see your truck run, 70 years old and still hauling ... thats to neat!

stock600

New info on the 727, a tranny guy thats helping look for a core called and said thiers a 727D and a 727DD ??????? NO CLUE, is there really 2 diff. 727 for the cummins? I hate complications, just need to get a core over to Trans pro to start this build. Im going to do a deep pan,good clutches, and a maual valve body. Im looking for a very low [tight] very good convertor. Any other opinions besides suncoast?? I have a few calls out. Thanks guys