4 and 5 speeds behind LS1s
Thread Starter
Joined: Mar 2003
Posts: 10,617
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From: Little Austin
4 and 5 speeds behind LS1s Hy guys.
I want to throw out a question to you guys. How many of you would be interested in running something besides a T56 behind your LS1s? Would you use a Muncie, Saginaw, T10, TKO, Jerico, Richmond, Liberty, G-Force if it was an easy swap?
Andrew
I want to throw out a question to you guys. How many of you would be interested in running something besides a T56 behind your LS1s? Would you use a Muncie, Saginaw, T10, TKO, Jerico, Richmond, Liberty, G-Force if it was an easy swap?
Andrew
On The Tree
Joined: Jan 2004
Posts: 179
Likes: 3
From: Warsaw , Ohio
Hi Andrew,
Using a super T-10 with 2.88 first gear behind my 6 liter LQ4 thats going in my 70 Corvette. Mocked it up the other day with no flywheel to check imput shaft length and it looks like a perfect fit . I think the hardest part will be fabin a mount for the clutch cross shaft on the motor. As soon as it warms up a little I'll get it done.
Its COLD here!!! Stan
Using a super T-10 with 2.88 first gear behind my 6 liter LQ4 thats going in my 70 Corvette. Mocked it up the other day with no flywheel to check imput shaft length and it looks like a perfect fit . I think the hardest part will be fabin a mount for the clutch cross shaft on the motor. As soon as it warms up a little I'll get it done.
Its COLD here!!! Stan
On The Tree
Joined: Jan 2004
Posts: 179
Likes: 3
From: Warsaw , Ohio
I used a factory aluminum bellhousing (70 Corvette) for the initial mock-up . I will use a Lakewood blowproof bellhousing next time as soon as I get a new block plate ordered in. Lakewood lists a conversion bellhousing no. 15005 just for a ls1 and early transmissions. I was going to go this route but if the one I allready got works, it saves me $320.00. Stan
On The Tree
Joined: Nov 2001
Posts: 157
Likes: 1
From: Orlando, FL
Andrew,
I'd be real interested in something that lets me easily switch over to a mini SBC starter (maybe even mounted backwards), and lets me step up to one of the new Tremec TKO 5 speeds (the one rated at 525 lb ft of torque). Its .82 overdrive is far more useful to me than the .5 of the T56 6speed.
Would this allow me to swap over to the proven hydraulic stuff (throwout bearings and such) I see in the various circle track magazines?
John Parsons
I'd be real interested in something that lets me easily switch over to a mini SBC starter (maybe even mounted backwards), and lets me step up to one of the new Tremec TKO 5 speeds (the one rated at 525 lb ft of torque). Its .82 overdrive is far more useful to me than the .5 of the T56 6speed.
Would this allow me to swap over to the proven hydraulic stuff (throwout bearings and such) I see in the various circle track magazines?
John Parsons
Launching!
Joined: Dec 2003
Posts: 251
Likes: 2
From: Portland OR
I have a mechanic friend who swapped an LS1 in place of a big block, using an "old-style" trans (actually it was an "aftermarket" T-56 behind the big block, but a GM tremec or richmond is exactly the same in terms of input shaft size and length). He used the same 11" centerforce clutch that was behind the BB, just bolted it up to LS1 flywheel. The input shaft is slightly too short, but still long enough to engage the clutch disk properly. He fabbed up a longer bronze pilot bushing for the end of the input shaft to ride in. He used the old Lakewood bellhousing, just drilled a new hole for the one bellhousing bolt which is in a different location. he used the same Mcleod hydraulic TO bearing and MC as on the big block. All in all, a very simple swap.
Thread Starter
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
JP.
Your dream may be a reality soon. If any of you guys are interested in bellhousings with rear mount starters and small diameter clutches, speak up now..LOL...
Andrew
Your dream may be a reality soon. If any of you guys are interested in bellhousings with rear mount starters and small diameter clutches, speak up now..LOL...
Andrew
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i am currently putting my tko behind my ls1 . everything bolts up great . i called mcleod and they hooked me up with exactly whay i needed the first time . they are very knowledgeable! . i was going to use the factory cross shaft and linkage from the 69 but with my s&p headers there is no way this will work , so i have now put in the hydralic throw out bearing set up from mcleod . it is not finsihed yet but seems to be a good thing . you have to fabricate a bracket from the small master cylinder to the clutch pedal but that was about it . i will let you all know how it works when it is done and on the ground . should be by the end of the month (feb)
On The Tree
Joined: Jan 2004
Posts: 179
Likes: 3
From: Warsaw , Ohio
I just test fit a new Lakewood blow proof #15005 to my LQ4 fit good except for some minor grinding near the top of the block for the nut on the block plate. This may not be an issue with the aluminum block LS1 & LS6. It also comes with a machined adapter that presses into the back of the crank to use a standard pilot bushing. Instead of the adapter and bronze pilot bushing I used a GM pilot bearing #12557583 which is a sealed ball bearing , everything fits perfectly and it cost less than $10.00 . Much less than some dealers want for the adapter to use the old-style bushing. This bellhousing even has a bracket on it so I can mount a bracket for my clutch cross shaft. This bell will ONLY bolt up to Muncie,Borg Warner T-10 , Doug Nash , and other transmissions with the old style bolt pattern. No T-56 but who cares they seem to be made outa glass! As 71 Camaro LS1 stated above its simple. Just use the GM pilot bearing and you don't have to make anything and you can use the old style aluminum bellhousing if you want. But the Lakewood bell is the way to go if you want to keep your feet, I have seen a car after a clutch explosion it aint pretty, its just cheap insurance.
Thread Starter
Joined: Mar 2003
Posts: 10,617
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From: Little Austin
I was hoping that we had something unique to offer, but after doing a little research it seems that what is described above is all correct. If you want to use an old school 4spd Muncie , T10 or a TKO 5spd, Richmond 5 or 6 speed, then all you need is either an old aluminum bellhousing, or any number of steel scatershields. The LS1 block is just mission a bolt at the 2 o'clock location, everything else is a perfect fit.
Andrew
Andrew
I see this post has been down a bit but I have a similar question. Would the same work for a t-56 from an lt-1 car, just use the stated gm pilot bearing, in the ls1 flywheel, the complete t-56 from the lt-1 car, (bellhousing, clutch, pressure plate, slave cylinder), leave out 1 bolt and viola, an old t-56 mated to an l-s1?
Staging Lane
Joined: Oct 2004
Posts: 70
Likes: 0
From: AUSTIN, TEXAS
I am in the middle of putting together all the components to put a GM TKO600 RR (TCET 4618) behind a LS1 / ZO6. I have been dealing with Don at D & D Performance. In the past D & D has mostly been Ford applications, but Don is doing more and more GM stuff. Don has ordered in a Fidanza LS1 flywheel and a SBC 11 clutch and pressure plate. I have a 1969 Camero aluminum BB bell housing (cast# 621). I think the pilot bearing/bushing concern could be solved best by replacing the GM TKO 600 input shaft with the Ford 1 1/8” X 26T input. It is .500 longer at the pilot journal but the spline length and location is about the same. The pilot journal diameter is 17mm on the Ford and GM is 15mm. A long shot on the bearing being found but a bushing would be easy, and not protruding out of the back of the crank like the other option, could possibly interfere and contact the clutch hub. Plus the bushing hanging out of the back of the crank seems weak and hokey. Don has been very helpful and returns all my calls. His direct number is 248-735-6222.
Jeff
Jeff
Just throwing a pitch out here but we sell an awesome M22 Muncie with either a 2.20 first gear or 2.52 first gear . These units have the 26 spline input shaft and a huge 32 spline output shaft !!! For more details , pm me .
