I'm getting the parts together for a Tremec TKO swap into my Scode67FB. The engine will be a 428. I already bought the new Quicktime bellhousing (haven't received it yet) but now need to look into a flywheel and clutch setup. I have the original 428 flywheel with a near-new 11 1/2" clutch setup. Quicktime said the bellhousing will accomodate up to an 11 1/2" setup. However, going to the TKO, I'll need a 26 spline disc and I can't find a 26 spline 11 1/2" disc. I've found 11" and 12" but no 11 1/2." So, first question: Can I use an 11" clutch disc with an 11 1/2" pressure plate? I don't like the idea (if it actually works) but want to know if it's an option.
Looking around at flywheels, all the new ones seem to be drillrd for 11" or 12" clutches. Some say for "long style" and some for "diaphragm." Next questions: Do both bolt up to the same holes in the flywheel? Is one style any better than the other?
What flywheel / clutch setup are you guys using?
I have a 390 motor with a CJ bellhousing and in my aplication I used a( McLeod) MCL 360821 ford 12" diaphragm pressure plate and MCL 260273 12" 200 series disc with a 1 1/8 x 26 spline. All parts were supplied by Fred of Dark Horse Performance in Seattle Washington and bolted right up in place other than the hole I had to cut in the floor of my Ranchero for clearance. Fred is quite knowlegable about what fits. It might be worth giving him a call . I also used a new 40 Lb steel flywheel. A disc smaller than the pressure plate will be OK as the pressure plate won't know. I really like the TKO 11 after I fixed the factory F&*&% up where they forgot to machine the reverse shifter fork and it wouldn't go into reverse. Good luck, hope this is some help.
I am in the process of swapping a tko600 in my 57 fairlane right now. It is a 428 cj and is replacing a top loader. No new bell housing is required in my case. Just bolts right up. I am using a 12 inch mcleod dual friction disc with my zoom long style pressure plate. Only problems I have encountered so far is I have to elongate the holes in my tranny mount and fab a spacer for the correct pinion angle. The mcleod disc is .100 thinner than the old zoom disc. The pressure plate had plenty of room to take up the slack. I will post the results of the clutch operation when I get it on the road this weekend.
In your case the smaller disc should be fine. Just measure the thickness and make sure you have enough movement in the pressure plate. Bigger is better if you can fit a 12 inch. Why did you get a new bell housing?
I decided on the new bellhousing for a few reasons. It'll accept an out-of-the-box TKO. I won't have to get the shortened input shaft or use a spacer. A non-modified TKO will leave me more options if I change motors or sell the trans later on. Also, it'll help shed a few pounds.
I checked the McLeod site, and they list an 11 1/2" 26-spline disc (1 1/8" input). The number is 260272. Is your diaphragm clutch bolted to a stock flywheel? I'm still trying to figure out my options, so I'd like to know if the long style and diaphragm clutches bolt up the same.
Anyone have input comparing the "feel" of long and diaphragm clutches?
This message has been edited by Scode67FB on Aug 22, 2007 8:16 PM
I have done the swap in my 67 but it is not on the road yet. I have a Centerforce II # CFT360033. It is 11" that bolts your 11.5 pattern. I have a McLeod Dual Friction 26 spline clutch # 260871. I have since decided to go with a aluminum flywheel for my stroker and the pp will not bolt up so I don't need the pressure plate anymore. If your interested I would let the pp go at 25% off of Summits price. It has been bolted up but never used. Still have the box. John
and it has been the single best modification I have done.
I have a CJ Ford bellhousing, 11.5" std. long pressure plate, 11"x26 Chevy disk and the Tremec with the short input shaft option.
Bolts right in without adapters.
If I had to do it again, I would get the std. input shaft and use the spacer between Bell & tranny. That would put the shifter more in the center of the std. cutout - and probably would not have required a longer driveshaft.
Shifting ist vastly improved with GM MTL over Dexron III