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 01-08-2014, 04:06 PM   #1
Likeaboss302
Registered User
 
Join Date: Sep 2012
Location: Fort Smith, AR
Posts: 23
Question LS1/T56 swap question

Wanting to do an LS1/T56 swap into my '71 truck. It's a 350/350 combo so I'm worried about the trans fitting under the cab considering that I don't have a high hump cab. What could be done to make it fit, fab work, possibly a body lift?

Also, any idea what the clutch pedal setup will look like and what I'll have to change to fit all that stuff in the engine bay?
Likeaboss302 is offline   Reply With Quote
Old 01-08-2014, 05:41 PM   #2
Custom 68
Registered User
 
Custom 68's Avatar
 
Join Date: Nov 2001
Location: Springfield, MO
Posts: 2,939
Re: LS1/T56 swap question

You could always cut out the floor and install a high hump if you need the room. Mine actually fit however it is very very tight.
I did the install about 8 or 9 years ago back before everybody was doing it. I built my own mounts so I would say the mounts you choose will play a role in where it all will sit. I did start originally with a 4l60e tranny so I built it around that at the time. The new T56 made it close.
__________________
Dave
1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap
1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?)
"A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome".
"If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"
Custom 68 is offline   Reply With Quote
Old 01-10-2014, 08:41 PM   #3
crazy longhorn
Fabricate till you "puke"
 
Join Date: Jun 2002
Location: Ill
Posts: 9,402
Re: LS1/T56 swap question

Go for the high hump, from a 6 cyl truck....you will find it to be a tad longer, & this may help with the shifter placement on the T-56 ? Longhorn
__________________
69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....
crazy longhorn is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 11:56 PM.


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