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

LS1 to TH700R4 (flexplate and spacer question)

Thread Tools
 
Search this Thread
 
Old Jan 18, 2006 | 06:34 PM
  #1  
gnx7's Avatar
Thread Starter
TECH Junkie
20 Year Member
Liked
Loved
Community Favorite
iTrader: (28)
 
Joined: Nov 2002
Posts: 3,656
Likes: 282
From: San Francisco, CA
Default LS1 to TH700R4 (flexplate and spacer question)

Is the flexplate for a TH700R4 the same as a TH350?

I know that guys putting TH350's behind LS1's need a spacer plus a TH350 flexplate with elongated holes to mate up to the LS1 crank.

I found a TH700R4 that has an Advanced Adapter kit on it to mate up to my '84 FJ60 LandCruiser transfer case rebuilt for a smoking price (over $2200 in parts). It has a TV cable to control line pressure and if I weld on a small tab/stub onto my throttlebody arm for it to attach to it should work perfectly. Lockup is controlled hydraulically and the seller used this behind an LT1 (did the same mod to make the TV cable work).

Is the flexplate/spacer solution the same for a TH700R4 and TH350?

I need an LS1 to replace my 130hp/200ft/lbs tq Toyota 4.2i straight 6 (tractor motor basically) that gets 12mpg on the highway going 65mph.

Thanks,

Mark
Reply
Old Jan 19, 2006 | 11:16 AM
  #2  
gnx7's Avatar
Thread Starter
TECH Junkie
20 Year Member
Liked
Loved
Community Favorite
iTrader: (28)
 
Joined: Nov 2002
Posts: 3,656
Likes: 282
From: San Francisco, CA
Default

anyone?
Reply
Old Jan 20, 2006 | 05:44 AM
  #3  
spy2520's Avatar
12 Second Club
20 Year Member
Photogenic
Photoriffic
iTrader: (3)
 
Joined: Feb 2005
Posts: 3,513
Likes: 1
From: Waldorf, MD
Default

i thought the 700r4 was the same as the 4l60e minus electronics....
Reply
Old Jan 23, 2006 | 05:13 PM
  #4  
gnx7's Avatar
Thread Starter
TECH Junkie
20 Year Member
Liked
Loved
Community Favorite
iTrader: (28)
 
Joined: Nov 2002
Posts: 3,656
Likes: 282
From: San Francisco, CA
Default

That was my understanding as well....

Can anyone else chime in?

I'm putting a '99 Camaro LS1/TH700R4 in my '84 FJ60 LandCruiser mated to the stock FJ60 Transfer case using an Advanced Adapter kit on the output shaft of the transmission.
Reply
Old Nov 22, 2006 | 10:00 AM
  #5  
82z28macdady's Avatar
On The Tree
15 Year Member
iTrader: (5)
 
Joined: Feb 2006
Posts: 122
Likes: 14
From: Palm Bay, FL
Default

700r4 is going to be the same bolt pattern as the older 4l60 and 4l60e in the lt1 f-bodys. from what i understand thye all bolt up to the ls1 except for the top bolt. i have no idea on the spacing though, but i know tci has a flexplate that is univsersal (mates to both gen III and gen I/II motor and tranny)
Reply




All times are GMT -5. The time now is 09:11 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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