Tremec 3450 5-speed guys
02-05-2010, 08:49 PM
#11
Update: Well my 2005 5speed transmission arrived today. Ran the part numbers, it not a Tremec, good old NV3500. Awesome, paid $750 for another NV. I made a few phone calls and got some interesting news. I called Tremec direct AKA TTC (Transmission Technologies Corporation) at 1 (800) 401-9866. They told me US trucks never used there transmissions, they were only released is mexico. So, sad to say these are a order only item unless you got a mexico truck version.
They directed to me Rockalnd standard gear (http://www.rsgear.com/) who stocks these transmissions. You need to talk to George at ext. 116 in the performance department.
I wasn't able to reach him today, so I have no idea what these trans cost new.
They directed to me Rockalnd standard gear (http://www.rsgear.com/) who stocks these transmissions. You need to talk to George at ext. 116 in the performance department.
I wasn't able to reach him today, so I have no idea what these trans cost new.
02-06-2010, 05:21 AM
#14
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02-06-2010, 02:34 PM
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pretty much what perry said. its a drop in replacement. you can still tow something. plus with a t56 you need bigger gears in the rear to move a truck with the gear ratios that it has.
02-06-2010, 06:58 PM
#17
The T56 is rated higher than a NV3500 in the torque department, and people have taken their M6 f-bodies into the 10's. I'd think for the average RCSB or ECSB towing/hauling an average amount of stuff (ie, not utterly maxing things out) than you'll be fine. Gears would be needed so you can get off the line with a load, but that's what 5.13's are for. Yes you'll have to do some work to make it fit, and I understand if one wouldn't want to do that as it is some work.
If you want a drop in (relatively) replacement you can still tow with that is beefier than the NV3500, there is always the ZF-6 or NV4500 tranny. Some fellow on here put one of the ZF's into his Avalanche I think.
If you want a drop in (relatively) replacement you can still tow with that is beefier than the NV3500, there is always the ZF-6 or NV4500 tranny. Some fellow on here put one of the ZF's into his Avalanche I think.
02-06-2010, 07:14 PM
#18
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The T56 according to TTC is "not recommended" for towing... and has a GVWR of like 3800 - 4000lbs...
So actually towing with it is kinda iffy in my books... Heck, my Blazer as it sits is 4400lbs... lol
I'd love a ZF-6, but there's no way in hell that'll fit in my Blazer, lmao
So actually towing with it is kinda iffy in my books... Heck, my Blazer as it sits is 4400lbs... lol
I'd love a ZF-6, but there's no way in hell that'll fit in my Blazer, lmao
02-06-2010, 07:39 PM
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I have built 4 T56's and the teeth are very narrow on all gears compared to a truck transmission. I would imagine the problem with towing would be heat soak over a long haul. The narrow teeth may not be able to handle the temperature rise. I have towed many many times with the most load being a 6500 lb. 78 Ford bronco on the interstate for 40 miles. I would alternate between 5th and 6th gear every couple of minutes to give them a chance to cool.