Johnny S Posted March 24, 2009 Report Posted March 24, 2009 As I understand it the Tremec 5-speed transmission (at least some?) is the same as the older T-5 Borg-Warner transmissions albeit not made by Borg-Warner any more. I realize that there are variations on the T-5 so I'm assuming the same is true on the Tremec. I'm just curious if anyone has used one of these Tremec 5-speeds yet or investigated using one behind an L-6 flathead? I know that Don C. has installed a T-5 and swears by it? They do seem to be far less complicated than finding, fixing, installing, troubleshooting, re-fixing, and re-installing an original Mopar overdrive. Well, at least that's the sense I get from following the threads on the classic Mopar overdrives. So .... does anyone know if the same adapter that is used for the T-5 to flathead link-up works with the Tremec version? It does look like the Tremec offers several floor shifter position options. Just curious what others may know or think about this variation on a T-5 behind a flathead? Quote
james curl Posted March 24, 2009 Report Posted March 24, 2009 Tremecs are not cheap, T5s can be bought for very little money, they can also be rebuilt for little money compared to the cost of a Tremec. Quote
Don Coatney Posted March 24, 2009 Report Posted March 24, 2009 Why spend extra money for a transmission capable of manageing a 500 HP engine when a flatty will only produce 150 HP tops. Quote
Plymouthy Adams Posted March 24, 2009 Report Posted March 24, 2009 Don it could be, but highly unlikly, that he is mounting this up to the driveshaft twisting Dodge 413 Flathead... Quote
Don Coatney Posted March 24, 2009 Report Posted March 24, 2009 Don it could be, but highly unlikly, that he is mounting this up to the driveshaft twisting Dodge 413 Flathead... What is the HP of this 413 flathead? Better question, what is the torque? Quote
Plymouthy Adams Posted March 24, 2009 Report Posted March 24, 2009 don..I will see if I can find that in my truck book..I did read that twisting driveshafts was not a problem with these engines... Quote
Johnny S Posted March 25, 2009 Author Report Posted March 25, 2009 So, so far I take it as a "no". I found one that a friend of mine in the auto salvage world could get for about $1100 and the thought was .... great transmission at less than the cost of many Mopar overdrives, wonder if it will bolt up and work? And no Tim .... not a "tail-twistin" 413 ... just thinking plain ole vanilla flathead with a little flare to it that would add that "twist" in another way ... options thinking you know. Heck, Keisler has put one behind the Chevrolet 4 cylinder Ecotec .... http://www.kitcarmag.com/techarticles/general/142_0505_keisler_engineering_engine_transmission_mate/index.html . Last I saw the old Mopar overdrives aren't cheap either ... sounds like putting substantially over $1000 in those isn't hard to do. ..... but from the responses so far it sounds like the older T-5's are much cheaper and the more practical way to go. If practical is your goal. Quote
james curl Posted March 25, 2009 Report Posted March 25, 2009 Old Mopar overdrives seem to run from $1200 to $1600 complete so if you can buy a good tremec and adapt it in the same fashion that Coatney did to use the T-5 then it would be a good deal. Quote
Plymouthy Adams Posted March 26, 2009 Report Posted March 26, 2009 Don..found the smaller big six for the truck..the 331 L6...240 ft. lb at 1200 Quote
Don Coatney Posted March 26, 2009 Report Posted March 26, 2009 Don..found the smaller big six for the truck..the 331 L6...240 ft. lb at 1200 1200 RPM's. That is slightly above idle on my engine. With the gearing in my car at 1500 RPM's I am running about 50 MPH but my engine will not pull it unless going down hill. Makes me wonder at what RPM did the 413 produce the best numbers? Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.