Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

LT1 vs LS1 60e trans mount pad

Thread Tools
 
Search this Thread
 
Old Nov 3, 2018 | 11:08 AM
  #1  
kris396ss's Avatar
Thread Starter
On The Tree
 
Joined: Mar 2015
Posts: 168
Likes: 14
Default LT1 vs LS1 60e trans mount pad

Can anyone confirm if the LT1 4l60e and LS 4l60e's transmission mount pad is the same height from the centerline of the trans? I know they are in different locations (LS is further forward) but I'm trying to figure out if the height is the same. I mocked up a setup with an LT1 trans but ended up switching over to an Ls1 trans for the final build. I'm notching/rewelding the tubular K member to accommodate the forward to back difference but I need to know if the heights are the same so I can keep the engine angle spot on. I've bee told "they are close" but that doesn't really help me.

Wondering if anyone knows off hand if maybe they are the same or if anyone with an LT1 trans would be so kind as to measure the base of the mounting pad to some fixed point I can match on the LS trans (like maybe the centerline of the output shaft) so I can compare it to the LS trans. I got rid of my LT1 casing so I have nothing to compare.

Thanks for the help!
Reply
Old Nov 4, 2018 | 01:21 AM
  #2  
MaroonMonsterLS1's Avatar
TECH Junkie
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2012
Posts: 3,618
Likes: 1,328
From: Iowa
Default

If you mocked up with one trans and are using another...why can't you measure yourself?

Is the old trans gone?
Reply
Old Nov 4, 2018 | 08:10 AM
  #3  
Jays_SSZ28's Avatar
Banned
iTrader: (2)
 
Joined: Aug 2009
Posts: 2,223
Likes: 56
Default

Originally Posted by MaroonMonsterLS1
If you mocked up with one trans and are using another...why can't you measure yourself?

Is the old trans gone?
Originally Posted by kris396ss
I got rid of my LT1 casing so I have nothing to compare.
I'd guess it is gone.
Reply
Old Nov 4, 2018 | 10:01 AM
  #4  
kris396ss's Avatar
Thread Starter
On The Tree
 
Joined: Mar 2015
Posts: 168
Likes: 14
Default

Yea, unfortunately I got rid of the LT1 casing before I got the LS casing not anticipating there would be any difference. For some reason I was thinking the only difference was the bell housing shape and the different converter depths but figured all else would be the same. Bad assumption on my part LOL
Reply
Old Nov 5, 2018 | 07:09 AM
  #5  
MaroonMonsterLS1's Avatar
TECH Junkie
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2012
Posts: 3,618
Likes: 1,328
From: Iowa
Default

Originally Posted by Jays_SSZ28
I'd guess it is gone.
Yea you're probably right *hangs head in shame*
Reply




All times are GMT -5. The time now is 11:43 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE