and its got clear headlights too

 

The old torque converter came apart due to a bent flexplate courtesy of me when swapped tranny's. It still lasted a year tho before it came apart. The torque converter i took out came from a 360 according to the gear shop. It had a large weight on it. So they sold me one without one because they said all 318 were internally balanced. They asked if it felt smooth when driving and i told them it was ultra smooth, goin over 90 you could hardly feel anything, no shake no shimmy no noise from the drivetrain. and its still like that. except i can't get over 70.

 

To start with let me say nice truck. Now to the problem. At top speed what RPMs are you getting? The answer to that question will tell you whether the problem is in the engine or the drive train. Check the serial numbers on the two trannys so you can find out if they have the same gearing. Without more info you can't tell anything for sure but from the info you have given the torque converter would be the most suspect problem in my mind. A tranny rarely slips at high speed unless it also slips at low speeds. Find a steep upgrade on an interstate and floor it while at highway speed. If you can't over power the tranny and make it slip the tranny is not slipping. What tranny do you have? Remember all torque converters are not the same. Some are lock-up types and some aren't if you use a lock-up without the supporting equipment it cannot lock.

 

what I like about it is that it looks like " a truck" not one of those wussie pretty ones that I'd be afraid to drive for fear of chipping some paint...yours looks like it should be hauling a trailer and snowplowing at the same time. lol

very strange problem...

I'm still trying to figure out if I have a 727 or something else.

 

Ravram
Look on the flange just above the tranny pan on the drivers side. This has all the info to identify your tranny. You will find 3 sets of numbers. First is the part number, second is the build date, and third is the serial number. The dealer can then identify your tranny thru the part number. Another mystery solved. LOL

 

I'm just not used to v-8 vehicles...oddly enough most of my experience is with Chevrolet Corvairs...totally different beasts!

You think it's simple, but for those of us who haven't been there before it's a whole new ballgame!

thanks seal!

 

Another mystery solved was my attempt at a joke. I don't think it is simple for everyone or anyone including me. I am on here mainly to share my knowledge and experience with those that may have less of those commodities than I do and I surely do not know it all. I have learned a great deal from others on this forum when I came to my wits end on a problem with my truck. When I handled explosives in UDT/SEAL teams we had an expression, you don't want to become an expert because all the experts are dead. A bit extreme for vehicles but very apprapo for explosives. It helps to keep me humble.

 

I have a non locking torque converter and tranny, i'm sure of that. i'll have to check the numbers later as the old tranny is sitting at my parents as a lawn ornament. i'm think they're both 727 tho but i'll check as i am no expert.

 

Have the bands in the new tranny been adjusted? If a band is dragging it will hold the ring gear from turning freely and a lower gear ratio will result due to the way the planetary gears operate. A dragging band can also be caused by a weak or broken spring in the servo.

 

Did you put larger tires on it??