LT1-LT4 Modifications 1993-97 Gen II Small Block V8

LT1 to T10 Question

Thread Tools
 
Search this Thread
 
Old Feb 3, 2022 | 04:53 PM
  #1  
chalou88's Avatar
Thread Starter
On The Tree
 
Joined: Feb 2018
Posts: 163
Likes: 2
Default LT1 to T10 Question

I have a 96 LT1 that I want to mate to a (63 Vette?) Coarse spline T10 in a G body. G body has a specific bellhousing, which I have, which requires a 153 tooth flywheel.

So I was going to order an 87 Camaro flywheel (1 pc main 153 tooth) and a 63 Vette Clutch Kit (10.5" coarse spline)

Could someone verify if this will work? When I look on Rock Auto it is saying "26 spline" in the notes for the flywheel. This shouldn't matter though cause the flywheel isn't splined - they are just adding that because that is what the Camaro T5 would have had right?? It is just throwing me off and I thought I'd ask before I order the parts.



Reply
Old Feb 13, 2022 | 11:13 AM
  #2  
chalou88's Avatar
Thread Starter
On The Tree
 
Joined: Feb 2018
Posts: 163
Likes: 2
Default

Ok I made a small mistake and didnt realize Lt1 came with a 153 tooth flywheel. So i ordered both. Now the question I have is the Lt1 flywheel is dished much deeper than the SBC flywheel. Like an inch or more. The engine side is the same but the clutch side sticks out more. Is this cause of the T56? I am going to be using a T10. My thought was to go with the LT1 specific but i was thinking there was a difference on the engine side which there is not. Does anybody know?





Reply
Old Feb 14, 2022 | 03:27 PM
  #3  
Gojira94's Avatar
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (4)
 
Joined: Dec 2009
Posts: 1,194
Likes: 36
From: Clayton, NC
Default

89-96 Corvette and 93-97 F-Body used a pull style clutch, T10 a push style, so the T56 style clutch pulls the clutch fingers away from the flywheel, whose surface would need to be further from the crank than it would be on a T10 push style. Make sense? In your case, you'd want to treat the back end of your LT1 as if it were a traditional 1-piece rear main SBC. Clutch/ flywheel/ trans all go together. Whatever clutch and flywheel combo would go behind a 1-piece RMS SBC with your T10 is what you need.

EDIT: be mindful of the flywheel balance setup. LT1s are internal balance front (harmonic damper, not balancer) and external rear (needs weight on flywheel or flexplate). make sure you get a SBC flywheel with the same weight tab you see on the deep LT1 plate in your pics.
Reply
Old Feb 14, 2022 | 03:38 PM
  #4  
chalou88's Avatar
Thread Starter
On The Tree
 
Joined: Feb 2018
Posts: 163
Likes: 2
Default

Originally Posted by Gojira94
89-96 Corvette and 93-97 F-Body used a pull style clutch, T10 a push style, so the T56 style clutch pulls the clutch fingers away from the flywheel, whose surface would need to be further from the crank than it would be on a T10 push style. Make sense? In your case, you'd want to treat the back end of your LT1 as if it were a traditional 1-piece rear main SBC. Clutch/ flywheel/ trans all go together. Whatever clutch and flywheel combo would go behind a 1-piece RMS SBC with your T10 is what you need.

EDIT: be mindful of the flywheel balance setup. LT1s are internal balance front (harmonic damper, not balancer) and external rear (needs weight on flywheel or flexplate). make sure you get a SBC flywheel with the same weight tab you see on the deep LT1 plate in your pics.
Hell yeah thanks for the response man.

Ok --- I have the Gen I 1 pc rms flywheel on hand (in pics) the weight looks the same as the Gen II, so am I good to go in that respect?

The clutch is for a 63 vette. My logic was to use same clutch as what the trans came out of (because of spline count - it is a coarse spline trans) I was not aware of push/pull clutches. Will it work?

Last edited by chalou88; Feb 14, 2022 at 03:46 PM.
Reply
Old Feb 14, 2022 | 08:46 PM
  #5  
Gojira94's Avatar
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (4)
 
Joined: Dec 2009
Posts: 1,194
Likes: 36
From: Clayton, NC
Default

Your logic is sound if the input shaft works in the LT1 crank. You might try test fitting the trans and engine together without the clutch and flywheel just to see where you are on input shaft depth in the crank. A pilot bushing for a trans in the 2-piece RMS era probably won't be a fit but if you measure the ID of the crank and OD of the input shaft you might find one made for older trans/ newer SBC applications. If the input shaft doesn't bottom out or hang in space behind the crank you're most of the way there.
Reply




All times are GMT -5. The time now is 06:34 PM.