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

FLT modulator>>?

Thread Tools
 
Search this Thread
 
Old Oct 13, 2008 | 01:10 AM
  #1  
bluchev's Avatar
Thread Starter
On The Tree
 
Joined: Oct 2008
Posts: 193
Likes: 0
Default FLT modulator>>?

can some one explain this to me or show me a picture of how you can have a vacuum modulator on a 700 or 4l60e? i dont get it
Reply
Old Oct 13, 2008 | 07:15 AM
  #2  
FLT's Avatar
FLT
FormerVendor
iTrader: (1)
 
Joined: Sep 2005
Posts: 6,620
Likes: 4
From: Wood Dale, Illinois
Default

You can not get a vac mod kit in a 700r4 because the valve body is different. However in a 4l60e it can easily be done. This was designed for vehicles that might have computer issues controlling transmissions line pressures and is used to replace the pressure control solenoid inside the transmission. There are many other sensors on a vehicle that give the computer inputs. If they are faulty the computer will not give the transmission the correct inputs needed to maintain proper line pressure. With the modulator installed there is a pass through fitting installed in order to get vacuum to the trans. In the fbody vacuum is generally taken from the brake booster hose. Here are a couple photo's for you.

In this photo you can see the brass fitting in the lower left of the photo. This is the pass through fitting.


This photo shows you the modulator installed on the valve body.


This photo shows the line we make when we ship our transmission. This is the line that must be hooked up to a vacuum source.


Hope this helps you with your questions. Vince
Reply
Old Oct 13, 2008 | 11:57 AM
  #3  
TXZ28LS1's Avatar
TECH Senior Member
iTrader: (5)
 
Joined: Mar 2004
Posts: 6,163
Likes: 3
From: Classified
Default

Originally Posted by Vince @ FLT
You can not get a vac mod kit in a 700r4 because the valve body is different. However in a 4l60e it can easily be done. This was designed for vehicles that might have computer issues controlling transmissions line pressures and is used to replace the pressure control solenoid inside the transmission. There are many other sensors on a vehicle that give the computer inputs. If they are faulty the computer will not give the transmission the correct inputs needed to maintain proper line pressure. With the modulator installed there is a pass through fitting installed in order to get vacuum to the trans. In the fbody vacuum is generally taken from the brake booster hose. Here are a couple photo's for you.

In this photo you can see the brass fitting in the lower left of the photo. This is the pass through fitting.


This photo shows you the modulator installed on the valve body.


This photo shows the line we make when we ship our transmission. This is the line that must be hooked up to a vacuum source.


Hope this helps you with your questions. Vince


man vince, bad *** for sure man!!!
Reply
Old Oct 13, 2008 | 03:15 PM
  #4  
bluchev's Avatar
Thread Starter
On The Tree
 
Joined: Oct 2008
Posts: 193
Likes: 0
Default

i have heard of this mod from a few people and i thought they were full of **** lol
thanks alot for the info. good job on finding new ways to fix this problem!
Reply
Old Oct 13, 2008 | 06:48 PM
  #5  
TXZ28LS1's Avatar
TECH Senior Member
iTrader: (5)
 
Joined: Mar 2004
Posts: 6,163
Likes: 3
From: Classified
Default

Originally Posted by bluchev
i have heard of this mod from a few people and i thought they were full of **** lol
thanks alot for the info. good job on finding new ways to fix this problem!


im running an ACE RACING stage 2 with the vac mod and everything is perfect!!
Reply




All times are GMT -5. The time now is 05:16 PM.

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 | 2026-06-09 14:55:56


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