kballs

iTrader: (1)

Ive read all the stuff on swapping input shafts and front plate etc, but im wondering am i missing something on why you cant run a flywheel spacer like the automatic guys do and a longer pilot bearing to be able to run the lt stuff as is?

Or is the gap way too much? Just figure guys run old style 4spds behind ls engines without too much trouble so there must be a way.

Steve91T

I'm curious as well.

MorePSI

Ls3 pilot bearing and accepting you'll be a bolt short bellhousing to block wise is all that's truly needed.

scooter77

I thought the LT trans is a lot weaker? Might be the reason people arent doing it?

Grip

I am joining a 08 5.3 from a Silverado to a 02 Camaro T56 with an aftermarket clutch. I have everything but the pilot bearing. Does anyone have the PN or an application I should use?

Thanks in advance!

scooter77

There is a bushing and an actual bearing you can use... I went with the bearing option, let me try and find the P/N. Ill PM you if I can find it.

jmd

iTrader: (4)

02 Camaro. V8.

It is possible if all necessary parts mating points are measured and accomodated for with extra length pilot bearings. However you have not mentioned a plan to mount a slave cylinder, nor an alternative method of clutch release. And if you're changing the front plate, why not change the input at that point?

Flywheel spacers are bad for starter engagement. Even 0.100"

MorePSI

No, gears are the same other than the input shaft is .400" longer on ls1 T56s. At some point (2002?) Tremec went to a steel 3-4 shift fork. Slave cylinder mounting is easy, that's integral to the LT1 bellhousing.

It's just like a 4 speed swap, it isn't rocket surgery. LS3 pilot bearing (larger sealed bearing that goes into the first register of the crank) for 4 speeds, TKOs, Richmond 5/6s, LT1 T56s, and later TR6060s, 4th gen camaro/traditional small block chevy pilot bearing or bushing for the longer LS1 input t56.

I'm not sure where the need to space the flywheel is coming from, the clutch should still be able to ride fine on the input shaft as the additional length is past the clutch disc, it might ride in a different spot on the input shaft than the LT1 clutch did but that's not the end of the world.

mapleridge

I bought an LT1 T56 in hopes of converting it for the LS and I called Tick performance before I bought it. They said the T56 from a 94 f-body is one of the most sought after. Not sure why though.

Steve91T

93 actually. It had a shorter 5th gear which is better for the track. At track days, my 97 with a 396 would fall on its face in 5th gear. Too tall.

onebadbowtie86

iTrader: (13)

I've read the 93 t56 was weaker then the 94+ models.

If it is even possible to mate the lt1 t56 to the ls motor, you would be stuck using the lt1 pull style clutch setup.

Steve91T

Again not true. Road racers go after the 93 tranny and don't have trouble.

What's wring with the pull style clutch? An honest question.

onebadbowtie86

iTrader: (13)

It just seems like there isn't the same aftermarket clutch support out there for the pull style clutch . I'll have to do so searching , but I'm fairly positive the first year, 93 t56 was rated for less torque then the 94+ t56 with the different gear ratios.
https://ls1tech.com/forums/lt1-lt4-m...ear-ratio.html

http://www.thirdgen.org/forums/trans...-1993-t56.html

MorePSI

93s had a deeper first gear which is weaker than the later, taller one. Borg Warner rated the transmission at 400 ft lbs instead of the 450 ft lb rating of 94+ transmissions. However, I'd have no worries running one.

Realistically, I don't see why you could not just take the 5-6 gears from a 93 box and put them in a 94+ for a closer ratio transmission. It'd have to be the 5-6 pair to work though.

Woody80z28

Digging up an old thread here, but I have an LT1 T56 and a 4.8 I'd like to mate. Is this confirmed that the LT1 clutch and slave with an LS flywheel and LS3 pilot bearing works together? I'm fine with missing one bolt on the bellhousing.

Woody80z28

I did some homework on this, and it doesn't look like it will work. LT1 input shaft works with the truck pilot, but the ls1 flywheel isn't the correct bolt pattern for the LT1 clutch, and the bellhousing isn't physically big enough for the ls1 flywheel. Maybe you could clearance cut it and redrill/order an LS flywheel with the pattern for the LT1 clutch, but at that point you're probably better off just changing the input shaft, bellhousing and front plate to convert it to LS1 style.

showdog75

iTrader: (8)

Even if it was a straight swap the LS push style slave is way better than the old stuff.

Teddy-2000RS

There is a thread here somewhere about using SBC transmission options with an LS. I believe (will link the thread when I find it) you can use a BBC flywheel and clutch (with the correct spline count for the given transmission) and then use the hydraulic TOB kits that t10 guys are using to convert to the LS style.

Here is the link :

https://ls1tech.com/forums/conversio...-ls-motor.html

Woody80z28

Teddy, thanks. I read that a couple weeks ago. The LT1 T56 has a short input shaft though. It won't reach with an old BBC bell housing (or bolt up, or have room for an adapter). And the LT1 bell housing won't fit the ls1 flywheel, so you can't use the lt1 clutch.

Teddy-2000RS

I may have misread but the way I read it was the BBC flywheel sticks out farther than the LS one and the input shaft will just sit rearwards .400" which is not part of the splined portion anyways?