Help With Fast Throttle Body

Reply Subscribe

Thread Tools

Search this Thread

Jul 8, 2022 | 12:38 PM

Smitty454

Thread Starter

Launching!

Joined: Mar 2012

Posts: 299

Likes: 21

From: Phoenix, AZ

Help With Fast Throttle Body

I bought a used FAST 4150 style throttle body a year or so ago and Im just now getting around to installing it on top of the holley split intake.

I noticed the TPS connector is completely different than my 6.0 LQ9 harness.
The connector on the back which is either the MAP or an IAC valve doesnt match up either.

Do they make different connectors for this throttle body so I can adapt it to my harness?

Jul 11, 2022 | 10:10 PM

tsteel1

Teching In

Joined: Mar 2012

Posts: 37

Likes: 0

From: Dry Ridge Ky

Check Holley EFI wiring connectors on their site. I think those type of TBs uses a Crysler connector

Jul 12, 2022 | 10:45 PM

Smitty454

Thread Starter

Launching!

Joined: Mar 2012

Posts: 299

Likes: 21

From: Phoenix, AZ

Quote:

Originally Posted by tsteel1

Check Holley EFI wiring connectors on their site. I think those type of TBs uses a Crysler connector

Jul 12, 2022 | 11:24 PM

Smitty454

Thread Starter

Launching!

Joined: Mar 2012

Posts: 299

Likes: 21

From: Phoenix, AZ

I also unplugged these connectors to see if the other ends matched up to my harness but they dont..

My IAC connector has 6 pins but the fast connector only has 4.

My TPS connector is more squared while the fast connector is round.

Am I going to have to cut and splice these pigtails into my harness?

Last edited by Smitty454; Jul 13, 2022 at 12:05 AM.

Jul 13, 2022 | 04:37 AM

Jimbo1367

TECH Senior Member

Joined: Jul 2009

Posts: 8,034

Likes: 664

I’d get on Holley’s website and look for a pigtail. If not Holley, I’d check ICT Billet or another “LS swap” company.

what brand harness? I’d go to their site and look

Jul 13, 2022 | 11:05 AM

Smitty454

Thread Starter

Launching!

Joined: Mar 2012

Posts: 299

Likes: 21

From: Phoenix, AZ

Quote:

Originally Posted by Jimbo1367

I’d get on Holley’s website and look for a pigtail. If not Holley, I’d check ICT Billet or another “LS swap” company.

what brand harness? I’d go to their site and look

I have a PSI harness.

One way or another I think I'm going to have to cut and splice. Im wondering if I can cut those oddball connectors off and splice in my existing connectors to those pigtails?

Jul 15, 2022 | 04:24 PM

Smitty454

Thread Starter

Launching!

Joined: Mar 2012

Posts: 299

Likes: 21

From: Phoenix, AZ

Does anyone running this throttle body have any suggestions for me? Im not seeing a pigtail that will work with my setup.

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

Brett Foote

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

Pouria Savadkouei

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Verdad Gallardo

7 Most Reliable High-Performance Engines GM Has Ever Built

Verdad Gallardo

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Jul 15, 2022 | 08:26 PM

Smitty454

Thread Starter

Launching!

Joined: Mar 2012

Posts: 299

Likes: 21

From: Phoenix, AZ

Well here is the answer.

HOLY MOSES this is an involved process. I'm second guessing this whole swap all together now. Jesus.

https://www.lt1swap.com/cable_conversion.htm