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 12-27-2011, 11:02 PM   #1
shenk10
Registered User
 
shenk10's Avatar
 
Join Date: Feb 2009
Location: New Park, PA
Posts: 312
What gears to run?

I was looking for some help on what gears to run. I have an ls2 and 4l70e out of a tbss. My tire diameter is 29.5". I was thinking either 3.42, or 3.73. Does anyone have any opinions?
__________________
Jordan

1972 Chevy K5 Blazer, 6" Lift, 35x13.5R15, 6.0/6L80E/NP205

1982 Chevy C10 SWB, 2006 LS2/4l70e
In progress....
http://67-72chevytrucks.com/vboard/s...d.php?t=439860
shenk10 is offline   Reply With Quote
Old 12-28-2011, 11:07 AM   #2
Shon
Registered User
 
Join Date: Sep 2005
Location: sc
Posts: 1,203
Re: What gears to run?

what's the ultimate use of the vehicle? cruiser, daily driver, race it?
__________________
71 Cheyenne C10 LWB cam'd 6.0/T56 Swap
Shon is offline   Reply With Quote
Old 12-28-2011, 11:13 AM   #3
Hart_Rod
*************
 
Hart_Rod's Avatar
 
Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,858
Re: What gears to run?

I would go no lower than a 3.73 with that tall of tire.
Hart_Rod is offline   Reply With Quote
Old 12-28-2011, 11:16 AM   #4
shenk10
Registered User
 
shenk10's Avatar
 
Join Date: Feb 2009
Location: New Park, PA
Posts: 312
Re: What gears to run?

I would like to try to build it as a daily driver, although it might turn into a cruise truck.
__________________
Jordan

1972 Chevy K5 Blazer, 6" Lift, 35x13.5R15, 6.0/6L80E/NP205

1982 Chevy C10 SWB, 2006 LS2/4l70e
In progress....
http://67-72chevytrucks.com/vboard/s...d.php?t=439860
shenk10 is offline   Reply With Quote
Old 12-28-2011, 12:34 PM   #5
Shon
Registered User
 
Join Date: Sep 2005
Location: sc
Posts: 1,203
Re: What gears to run?

I went from 3.08 to 3.73 and did not see much MPG difference, i have 26" tall tires, I want to get some 29+. the 275s i had were 28ish I think....
__________________
71 Cheyenne C10 LWB cam'd 6.0/T56 Swap
Shon is offline   Reply With Quote
Old 12-28-2011, 12:44 PM   #6
shenk10
Registered User
 
shenk10's Avatar
 
Join Date: Feb 2009
Location: New Park, PA
Posts: 312
Re: What gears to run?

hmm, I know that the TBSS used a 4.11 stock gear, but with a heavier vehicle, and taller tire. I am leaning towards the 3.73, but I don't want something that just spins the tires all the time. I'll have to look at how much difference the trans gearing is in the 4l80e to 4l70e.
__________________
Jordan

1972 Chevy K5 Blazer, 6" Lift, 35x13.5R15, 6.0/6L80E/NP205

1982 Chevy C10 SWB, 2006 LS2/4l70e
In progress....
http://67-72chevytrucks.com/vboard/s...d.php?t=439860
shenk10 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 12:40 PM.


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