Join Date: Dec 2012
Location: Gastonia, NC - Born & raised in Connecticut - 31 years
Mentioned: 1 Post(s)
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Did a lot of comparing between the Keisler & Tremec and read a lot of blogs. They even have a couple U-Tube videos using the transmissions. Keisler seemed to fit without cutting the floor, but the video they put out, looked like it was more applicable for a stock HP engine to me. Blogs for both were good and bad.
Tremek requires floor mods to the trans tunnel, its taller than the stock Muncie. There is a website you can find showing the mods required -not to bad. Its longer, so crossmember changes & driveshaft. The TKO 500 is rated for 500 ft lbs of torque application and TKO 600 for 600 ft lbs. Reviews were good overall, with a few concerning complaints that made me uneasy.
Went to a car show where they had a Tremec display and factory rep.. They also had the man who does Tremec R&D using his 9,5000 RPM spinning Ford 302 mustang drag car, Bob Hanlon, Hanlon Motorsports out of PA. He has a web, but seems he rather talk to you directly to help you out. His wife handles the phone and orders. He took about 45 minutes to talk with me at the show and show me the mag articles he wrote on his Mustang and some parts of interest.
The Tremec in factory from will not work/shift cleanly past 6,000 RPM by design in how the synchro's work. Guys with high winding engines are disappointed when it won't shift/grinds past 6.000 RPM. To make it shift at higher RPM's, you MUST install the carbon fiber lined synchro's that Bob came up with to cure the problem - a $400 add on to the already $2295.00 price tag, so most don't get it and then speak ill about the trans as junk.
The trans is not your old 4-speed and you do not shift it the same. If you do, you will miss the 2-3 shift 95% of the time, compliant #2 about the trans. Bob showed me with a trans on display. The shifter operated a series of sliders in the trans, not forks like the Muncie. The shifter is self centering in that when you go from 1-2, it has springs that centers the shifter for the 2-3 shift. So, you cannot jam the trans into gear like a Muncie, you must actually open palm it from the 2-3 shift and simply push it up to 3rd. The quadrant pattern is tight and if you manhandle it like a Muncie, you go 2-5 most every time. I suppose you can pull it hard 3-4 and no problem manhandling 4-5 shift.
Its a 26 spline clutch shaft and you need to use a light clutch disc. A heavy disc will aggravate the spinning motion (inertia) of the input shaft which can cause a poor shift. The syncro's are cone shaped and they slow down the trans gears to shift, so if they are kept spinning because of inertia (heavy clutch disc), it takes the synchro's longer to slow down the gears and you can't get that fast clean shift out of it. Bob can recommend the set-up to use.
Must use the correct trans fluid as recommended by Tremec. Bob can supply this.
Must make sure your trans is perfectly centered to your crankshaft. If your bell is off-center the least amount, you will have problems as your pilot bearing will force the trans spline out of center and cause problems. The old Muncies have lots of play in the front bearing, just grab one and wiggle it around. So a little off set with these is OK, but a Tremec has to be perfect, it has tighter tolerances.
Bob can make a speedometer cable your length having the GM end for your car and the Ford end at the transmission. You can by a higher priced adapter which is available if you rather spend more money, or there is a plug for electronic speedo. He gave me several other tips as well. He can help, even though he is a Ford man. He developed a clutchless Tremek if you want him to build you one. He builds and rebuilds them -that's all he does. He blows them up, figures where the weak spot was, and the factory makes its changes. He knows his stuff.
I bought a TKO-600, factory spec (because I won't be shifting at 6,000 RPM or above) through him because of this talk with him. I felt secure in buying one and it shed light on all those things I was concerned about after reading many blogs that seemed to have problems with the Tremek. Have not installed it, but have it when I get to that point of my build. Liberty Transmissions is also another place that sells and modifies the Tremek. I think they sell kits for installations specific to your car for more money if you are not into fabricating.
Hope that helps a little in your choices.