|
Register or Log In To remove these advertisements. |
|
|
|
|||||||
 |
|
|
Thread Tools | Display Modes |
02-14-2017, 02:36 PM
|
#1 |
|
Registered User
Join Date: Feb 2017
Location: Harvard Illinois
Posts: 76
|
Rear ring and pinion choice
My 72 currently has a spool rear end and I'm going to have it changed over to most likely a posi or maybe an open. I was wondering what gear would be best for my setup. Will be a once in a while cruiser.
The engine is a 2007 4.8 LS with a 4l60e trans. The rear tires will be 28.66 in diameter. I'm not sure what the overdrive ratio is for a 4l60e trans. Can anyone help me with the formula for figuring this out? I was thinking on going with a 3:55 or 3:73. Thanks
__________________
1972 C10 Custom Deluxe 4.8 LS 4l60e |
|
|
|
02-14-2017, 05:37 PM
|
#2 |
|
Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
|
Re: Rear ring and pinion choice
.7 on the OD ratio....I went from 3.42, to 3.73 (4.8 in an 02 silverado). Big difference in the pep/pulling power, she take a little more fuel around town, but on the open road @ legal speed , she does a tick better. The converter does not unlock pulling hills....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.... |
|
|
|
|
02-14-2017, 06:11 PM
|
#3 | |
|
Registered User
Join Date: Feb 2017
Location: Harvard Illinois
Posts: 76
|
Re: Rear ring and pinion choice
Quote:
__________________
1972 C10 Custom Deluxe 4.8 LS 4l60e |
|
|
|
|
|
02-14-2017, 06:38 PM
|
#4 | |
|
Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
|
Re: Rear ring and pinion choice
Quote:
__________________
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.... |
|
|
|
|
|
02-14-2017, 09:05 PM
|
#5 |
|
1965 Chevy C10, 2005 4.8L/4l60
 
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,540
|
Re: Rear ring and pinion choice
I have the same setup in my truck. 4.8/4l60e/3.73/28+tires.
Is awesome on the highway and in town!
__________________
Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684  support our troops! |
|
|
|
|
02-15-2017, 12:00 AM
|
#6 | |
|
Registered User
Join Date: Feb 2017
Location: Harvard Illinois
Posts: 76
|
Re: Rear ring and pinion choice
Quote:
Here's mine. 
__________________
1972 C10 Custom Deluxe 4.8 LS 4l60e |
|
|
|
|
|
02-15-2017, 12:31 AM
|
#7 |
|
Senior Member
Join Date: Feb 2010
Location: Falls City, Nebraska "100 Miles From Nowhere"
Posts: 2,219
|
Re: Rear ring and pinion choice
3:73 and while your at it go ahead and drop the money for the period correct Eaton Posi...Aint that spool kinda hard on tires in the turns? Truck looks slick by the way!
__________________
Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American"
|
|
|
|
|
| Bookmarks |
|
|
Linear Mode
