The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain > LSx Swaps

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 07-28-2015, 09:40 PM   #1
jessemthompson
Registered User
 
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
Re: 5.3 into 72

Well, the communication wire was the issue. I got it all back together tonight and the trans has 1st gear now.
jessemthompson is offline   Reply With Quote
Old 07-29-2015, 09:59 AM   #2
solidaxel
Registered User
 
solidaxel's Avatar
 
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
Re: 5.3 into 72

What issue did you have with the communication wire , was it with the connectors or ?
__________________
53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD)
53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25
55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73
62 Solidaxle Corvette Roman Red (327
340hp 4spd 3:36) C4 & C5 suspension tube chassis
LS 3 4L70E
65 Corvette Coupe 327 350hp 4spd 4:11
78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42
2000 S-Type 3.0 (wife cruiser)
2003 GMC SCSB 5.3 4L60E 3:42
solidaxel is offline   Reply With Quote
Old 07-29-2015, 11:36 AM   #3
jessemthompson
Registered User
 
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
Re: 5.3 into 72

The connector on the tcm wasn't making contact. The connector backed out of the harness just enough so there was no contact.

On another note I just set up an appointment for my exhaust to be run. I'm going with 2 1/2" with an X pipe, spin tech mufflers and turn downs right at the rear bumper.
jessemthompson is offline   Reply With Quote
Old 07-31-2015, 03:30 PM   #4
1badcholo
Registered User
 
Join Date: Oct 2012
Location: Apison, TN
Posts: 18
Re: 5.3 into 72

I have a 6.0 in my 72. I built it to drive it. With that in mind, I'm on my 3rd set of mufflers. I found the Dynomax VT mufflers to have the period correct sound with no drown at highway speeds. Turbo mufflers and Flowmaster 40s were great as long as I kept it under 60. The flow's sounded great, but made my ears bleed at hwy speeds.
I'm using the 2 1/2" kit exhaust from Summit. Tail pipes angles behind the wheels.
Good Luck,
Jaime
__________________
72 long to short bed conversion, 6.0 LQ4 & 4L80E.
Rocket Booster Hyper Silver 18" Wheels with 1" spacers
Nitto Tires, Vintage A/C, Sanderson Headers, K&N Intake, 2 1/2" dual exhaust, 3:73 with a posi this winter. Atomic Orange Paint, all but paint performed in my garage, Daily Driver.
1badcholo is offline   Reply With Quote
Old 07-31-2015, 03:57 PM   #5
jessemthompson
Registered User
 
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
Re: 5.3 into 72

I was going to use flowmaster 40's, but I decided I wanted something a little different. I went with spin tech as I like chambered mufflers.
jessemthompson is offline   Reply With Quote
Old 08-03-2015, 09:21 AM   #6
jessemthompson
Registered User
 
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
Re: 5.3 into 72

Well, I have most things tightened up now and the truck is at the shop for exhaust. I had a p0300 code last night and after some troubleshooting found out I had two bad injectors. Once I pick the truck up I'm gonna run some fuel system cleaner through it just to make sure my other injectors are up to par. It will be nice to finally be able to drive her again.
jessemthompson is offline   Reply With Quote
Old 08-03-2015, 10:27 PM   #7
jessemthompson
Registered User
 
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
Re: 5.3 into 72

Had the exhaust ran today. They said they couldn't get an X pipe in so they ran an H pipe. They did a great job and the new power train seems to be running very well so far.





jessemthompson is offline   Reply With Quote
Old 08-04-2015, 01:02 AM   #8
kitsbeach
Senior Member
 
kitsbeach's Avatar
 
Join Date: May 2014
Location: Vancouver, BC
Posts: 591
Re: 5.3 into 72

How do the SpinTEch mufflers sound and which ones did you choose.?
__________________
Kitsbeach (Ken)

1967 C10 LWB (now SWB) Fleetside 6cyl Saginaw three-on-the-tree "No Frills"

1980 C20 Long to short & static drop "Square One"
kitsbeach is offline   Reply With Quote
Old 08-04-2015, 06:02 AM   #9
jessemthompson
Registered User
 
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
Re: 5.3 into 72

I like the sound of the spin techs. I ordered them from Maryland speed and they didn't give a series, just a 9x12 measurement. They are tame at idle, but wake up at full throttle. I am happy with them.
jessemthompson is offline   Reply With Quote
Old 08-04-2015, 07:50 PM   #10
johne72
Registered User
 
Join Date: Jan 2011
Location: newcastle ok
Posts: 2
Re: 5.3 into 72

trucks looking nice...planning on doing a swap soon...iam also here in bragg and was wondering is there many swap around here i would like to find some one to give me advice when i start
johne72 is offline   Reply With Quote
Old 08-04-2015, 09:19 PM   #11
jessemthompson
Registered User
 
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
Re: 5.3 into 72

I've seen a couple of 67-72s on post, but I haven't met them and don't know if they have LS's.
jessemthompson is offline   Reply With Quote
Old 08-05-2015, 05:52 AM   #12
johne72
Registered User
 
Join Date: Jan 2011
Location: newcastle ok
Posts: 2
Re: 5.3 into 72

Do you drive the truck to post alot ? I would like to check it out and be able to know some one that already done a swap...from what seem it looks pretty straight forward and i know there are still hidden challenges
johne72 is offline   Reply With Quote
Old 08-22-2015, 05:52 PM   #13
jessemthompson
Registered User
 
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
Re: 5.3 into 72

Well I've made a few changes to the truck as I've been driving it. Working the bugs out. I'm making the trip to pigeon forge in September for the shades of the past Rod run. It's been nice to have the truck back on the road. I've cleaned up and painted the master cylinder since these pictures lol



jessemthompson is offline   Reply With Quote
Old 08-22-2015, 08:18 PM   #14
Advanced Design
Senior Member
 
Advanced Design's Avatar
 
Join Date: Jul 2012
Location: Oblong, Illinois
Posts: 7,028
Re: 5.3 into 72

Looks very good. Hopefully not too many bugs to fix.
Advanced Design is offline   Reply With Quote
Old 08-22-2015, 09:42 PM   #15
jessemthompson
Registered User
 
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
Re: 5.3 into 72

There were a couple small coolant leaks and the first trans cooler I had on wasn't up to par. That stuff seems to be worked out now though.

Last edited by jessemthompson; 08-23-2015 at 03:35 PM.
jessemthompson is offline   Reply With Quote
Old 08-22-2015, 10:05 PM   #16
GMC-YA68
Senior Member
 
GMC-YA68's Avatar
 
Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 742
Re: 5.3 into 72

Any pics of the h-pipe set up??
__________________
-Keegan-

'72 Jimmy 4x4 - 5.3/4L65E/NP205 swap
http://67-72chevytrucks.com/vboard/s...d.php?t=663780
GMC-YA68 is offline   Reply With Quote
Old 08-22-2015, 11:07 PM   #17
jessemthompson
Registered User
 
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
Re: 5.3 into 72

Quote:
Originally Posted by GMC-YA68 View Post
Any pics of the h-pipe set up??
The next time I have it up in the air I'll take some pictures of it.
jessemthompson is offline   Reply With Quote
Old 09-05-2015, 09:15 AM   #18
jessemthompson
Registered User
 
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
Re: 5.3 into 72

I've never attempted to post a video. So here's my first attempt at it. A quick exhaust sound clip

http://s1126.photobucket.com/user/je...7F4C1.mp4.html
jessemthompson is offline   Reply With Quote
Old 08-22-2015, 10:37 PM   #19
H20cooled
Registered User
 
Join Date: Sep 2014
Location: Milwaukie, OR
Posts: 223
Re: 5.3 into 72

Looks great!
H20cooled is offline   Reply With Quote
Old 09-05-2015, 10:27 AM   #20
Advanced Design
Senior Member
 
Advanced Design's Avatar
 
Join Date: Jul 2012
Location: Oblong, Illinois
Posts: 7,028
Re: 5.3 into 72

Sounds really good! Key jingle, fuel pump, rummmbbblleee.....nice
Advanced Design is offline   Reply With Quote
Old 09-05-2015, 11:00 AM   #21
whitels1
Registered User
 
whitels1's Avatar
 
Join Date: Apr 2012
Location: Vegas
Posts: 617
Re: 5.3 into 72

Sounds great, a nice clean install!
__________________

GoldyLS1 K20 Build


My K10 Rock Crawler

-Dave
whitels1 is offline   Reply With Quote
Old 09-06-2015, 02:35 PM   #22
Arnulfo
Registered User
 
Join Date: Aug 2015
Location: Los angeles
Posts: 160
Re: 5.3 into 72

Sounds great!i too am digging the pre-start up fuel pump sound. Nice work.
Arnulfo
Arnulfo is offline   Reply With Quote
Old 09-06-2015, 03:48 PM   #23
Arnulfo
Registered User
 
Join Date: Aug 2015
Location: Los angeles
Posts: 160
Re: 5.3 into 72

What year blazer did the gas tank come out of? Seems to fit perfectly. I like the angle that your engine sits in . Looks factory. I wonder if the same motor / trans mount can be used with a 6L90E trans.... I'm thinking not without a high hump trans cover. What say you experts?
Arnulfo
Arnulfo is offline   Reply With Quote
Old 09-06-2015, 05:26 PM   #24
jessemthompson
Registered User
 
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
Re: 5.3 into 72

The blazer tank is from an 87. As far as the angle goes I used all ECE mounts. They worked out well. I did have to grind a little on the driver side because the header was really close to the mount.
jessemthompson is offline   Reply With Quote
Old 09-07-2015, 05:56 PM   #25
geekitupsum
Registered User
 
Join Date: Mar 2013
Location: spring hill tn
Posts: 54
Re: 5.3 into 72

what motor mount setup did you use? 4l60e trans?
geekitupsum is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:45 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com