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 > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-14-2011, 04:52 PM   #1
oldtrux
Registered User
 
oldtrux's Avatar
 
Join Date: Jul 2010
Location: Bancroft, ontario
Posts: 555
overdrive question

so i got a wc t5 with a .63 overdrive.does anyone know what the difference between the.63 and the .73 overdrive?i'm runnin a 283 with 373's.i tried posting in drivetrain forum but couldn't get a response.i'm just trying to understand what difference it would make.thanks for any help.dan
oldtrux is offline   Reply With Quote
Old 04-14-2011, 05:14 PM   #2
Clyde65
1965 Chevy C10, 2005 4.8L/4l60
 
Clyde65's Avatar
 
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,545
Re: overdrive question

.10


I am sorry, I just had to.
__________________
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!
Clyde65 is offline   Reply With Quote
Old 04-14-2011, 05:17 PM   #3
oldtrux
Registered User
 
oldtrux's Avatar
 
Join Date: Jul 2010
Location: Bancroft, ontario
Posts: 555
Re: overdrive question

thats cool,i new it was coming!
oldtrux is offline   Reply With Quote
Old 04-14-2011, 05:18 PM   #4
61_FL_Apache
Who Me?
 
61_FL_Apache's Avatar
 
Join Date: Sep 2010
Location: Royal Palm Beach, FL
Posts: 4,067
Re: overdrive question

Quote:
Originally Posted by Clyde65 View Post
.10


I am sorry, I just had to.
Dude, that was wrong.
__________________
Steve

1997 Tahoe LT 4D 2WD (DD)
2001 Blazer 4D 2WD
1961 Apache 10 (sold)
1965 C10 Stepper (sold)
61_FL_Apache is offline   Reply With Quote
Old 04-14-2011, 05:33 PM   #5
Clyde65
1965 Chevy C10, 2005 4.8L/4l60
 
Clyde65's Avatar
 
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,545
Re: overdrive question

I know, I apologize and bless all the Pygmies in New Guinea
__________________
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!
Clyde65 is offline   Reply With Quote
Old 04-14-2011, 05:40 PM   #6
1Bad62Pro/Street
"Where were you in '62?"
 
1Bad62Pro/Street's Avatar
 
Join Date: Jul 2004
Location: Cleveland County, North Cackalacky
Posts: 5,013
Arrow Re: overdrive question

Quote:
Originally Posted by oldtrux View Post
so i got a wc t5 with a .63 overdrive.does anyone know what the difference between the.63 and the .73 overdrive?i'm runnin a 283 with 373's.i tried posting in drivetrain forum but couldn't get a response.i'm just trying to understand what difference it would make.thanks for any help.dan
Now that's funny I don't care who you are that's funny right there now.

http://www.ttcautomotive.com/English/products/T-5.asp

http://www.adchevy.com/techtips/t5swap/

http://www.theoldcarguys.com/Borg-Warner-T-5-Specs.html

Don't know much about the T5's other than in mustangs.
Someone has used this In thier truck on here I think.
Posted via Mobile Device
__________________
PROJECT: "FULL METAL YELLOW JACKET"
1962 Chevy C-10 Stepside Shortbed Nostalgia Pro/Street Pickup Truck
PROJECT: "FULL METAL YELLOW JACKET Build Thread
What Are You Workin' On? - 1Bad62ChevyPickup
PROJECT: "TYRANNORAMBLER REX"
1969 AMC Rambler American Nostalgia Pro/Street
Youtube Channel: Father Son Projects
Youtube Channel: 2TIMOTHY2FITHTEEN

"North and South Carolina Folks Click Here!"
(((( ~ I have Parts For Sale & Miscellaneous Stuff ~ ))))

"Well being as there's no other place around the place,
I reckon this must be the place, I reckon...Nyuk Nyuk Nyuk" -Curly Howard Ph.D.

Last edited by 1Bad62Pro/Street; 04-14-2011 at 05:42 PM.
1Bad62Pro/Street is offline   Reply With Quote
Old 04-14-2011, 05:49 PM   #7
1Bad62Pro/Street
"Where were you in '62?"
 
1Bad62Pro/Street's Avatar
 
Join Date: Jul 2004
Location: Cleveland County, North Cackalacky
Posts: 5,013
Talking Re: overdrive question

Quote:
Originally Posted by Clyde65 View Post
I know, I apologize and bless all the Pygmies in New Guinea

Posted via Mobile Device
__________________
PROJECT: "FULL METAL YELLOW JACKET"
1962 Chevy C-10 Stepside Shortbed Nostalgia Pro/Street Pickup Truck
PROJECT: "FULL METAL YELLOW JACKET Build Thread
What Are You Workin' On? - 1Bad62ChevyPickup
PROJECT: "TYRANNORAMBLER REX"
1969 AMC Rambler American Nostalgia Pro/Street
Youtube Channel: Father Son Projects
Youtube Channel: 2TIMOTHY2FITHTEEN

"North and South Carolina Folks Click Here!"
(((( ~ I have Parts For Sale & Miscellaneous Stuff ~ ))))

"Well being as there's no other place around the place,
I reckon this must be the place, I reckon...Nyuk Nyuk Nyuk" -Curly Howard Ph.D.
1Bad62Pro/Street is offline   Reply With Quote
Old 04-14-2011, 08:32 PM   #8
oldtrux
Registered User
 
oldtrux's Avatar
 
Join Date: Jul 2010
Location: Bancroft, ontario
Posts: 555
Re: overdrive question

i think the answer really is .10 lol.im thinkin there's not a whole lot of difference on the highway!thanks anyway guys.
oldtrux is offline   Reply With Quote
Old 04-14-2011, 10:04 PM   #9
jocko
Senior Member
 
jocko's Avatar
 
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,972
Re: overdrive question

that's hilarious.... but seriously, (ok, not seriously, but slightly more seriously) what difference are you talkin bout? RPM drop when comparing .73 to .63? What was your prev trans - am guessing it didn't have a .73 o/d, I don't think i've ever heard that ratio for an o/d - if you had any old pg, th350/400 or 3 or 4 speed - final drive was likely 1:1. But sounds like your question is about comparing .73 to .63 overdrives - so here's a bit of useful trivia:

Don't know your tire size - but assuming you have ABOUT 27" tall tires (and with the 3.73's):
at 55 mph:
1.00 final drive = 2550 rpm
.63 o/d = 1610 rpm
.73 o/d = 1865 rpm

at 70 mph:
1.00 final drive = 3250 rpm
.63 o/d = 2050 rpm
.73 o/d = 2370 rpm

Hope that helps. If your tires are taller/shorter - then decrease/increase the rpms a bit.

Last edited by jocko; 04-14-2011 at 10:08 PM. Reason: oops - I meant to say useless trivia. ref for the above is from bottom of http://www.csgnetwork.com/multirpmcalc.html
jocko is offline   Reply With Quote
Old 04-14-2011, 10:59 PM   #10
oldtrux
Registered User
 
oldtrux's Avatar
 
Join Date: Jul 2010
Location: Bancroft, ontario
Posts: 555
Re: overdrive question

thanks jocko,that is exactly what i wanted to know.i guess i just didn't word it right.didn't mean to piss you off!
oldtrux is offline   Reply With Quote
Old 04-14-2011, 11:26 PM   #11
NCD1966
Registered User
 
NCD1966's Avatar
 
Join Date: Jun 2010
Location: Lafayette , La
Posts: 404
Re: overdrive question

heres a good gear calc

http://www.f-body.org/gears/
__________________
1966 Chevy C10 Stepside 355ci sbc with 3speed OD
2021 GMC Sierra 1500 AT4 6.2
1980 Chevy Camaro z28 383ci
1990 Chevy Suburban 350 tbi 2x4 (sold)
1984 Chevy C10 sliverado short fleet
1997 Chevy C1500 short fleet
NCD1966 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 05:25 AM.


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