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

To Shim or Not to Shim?

Thread Tools
 
Search this Thread
 
Old May 1, 2016 | 11:59 AM
  #1  
myltwon's Avatar
Thread Starter
TECH Addict
iTrader: (1)
 
Joined: Jul 2004
Posts: 2,965
Likes: 7
From: Palm Harbor, FL
Default To Shim or Not to Shim?

Just finished installing my new FTI converter and noticed there is around an 1/8" of gap between the converter pads and the flexplate. Never really paid attention to it with my old converter. Whats the consensus on running washers between the converter pads and the flexplate to "shim" it vesus just tightening the converter against the flexplate?
Reply
Old May 1, 2016 | 01:35 PM
  #2  
hrcslam's Avatar
TECH Addict
 
Joined: Dec 2010
Posts: 2,610
Likes: 4
From: Maricopa, AZ
Default

Originally Posted by myltwon
Just finished installing my new FTI converter and noticed there is around an 1/8" of gap between the converter pads and the flexplate. Never really paid attention to it with my old converter. Whats the consensus on running washers between the converter pads and the flexplate to "shim" it vesus just tightening the converter against the flexplate?
The converter slides on the input shaft. As long as the tabs are engaged (they are about 1/2 inch long) and it's not leaking, tighten the bolts.
Reply
Old May 1, 2016 | 02:12 PM
  #3  
kris72079's Avatar
On The Tree
iTrader: (7)
 
Joined: Mar 2013
Posts: 178
Likes: 0
From: Bucksport, Maine
Default

If you read the installation instructions you should see that shimming to a certain extent is a normal installation procedure.
Reply
Old May 1, 2016 | 02:20 PM
  #4  
98CayenneT/A's Avatar
TECH Junkie
10 Year Member
Photogenic
Liked
Loved
 
Joined: Nov 2013
Posts: 3,913
Likes: 366
From: White Bear, Mn
Default

At a 1/8 gap do not shim it. That is perfect. Put the bolts in and in turn will pull the tabs against the flex plate. The converter needs to be pulled away from the pump a bit to allow for flex, in turn not taking out the pump binding and pushing the pump inward
Reply
Old May 1, 2016 | 03:23 PM
  #5  
myltwon's Avatar
Thread Starter
TECH Addict
iTrader: (1)
 
Joined: Jul 2004
Posts: 2,965
Likes: 7
From: Palm Harbor, FL
Default

Originally Posted by kris72079
If you read the installation instructions you should see that shimming to a certain extent is a normal installation procedure.
I understand shimming is normal to do, was just curious as to what the opinion of it was.

Thanks for all the responses.
Reply




All times are GMT -5. The time now is 07:59 PM.

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