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  • 1974 - 1978 Mustang II Talk & Tech

Gear Ratio?

  • Thread starter Thread starter 87street
  • Start date Start date Oct 12, 2008
8

87street

New Member
Sep 17, 2008
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0
Oct 12, 2008
#1
  • Oct 12, 2008
  • #1
Alright, hate to be a pain here guys/girls... But i've gotta friend who happens to have a very strong running, and nicely restored '77 Cobra II with a 4 speed... He knows the original owner who says he has not done any prior modifications to the car.. Would anyone happen to know the factory gear ratio? Any help would be appreciated... Thanks.
 

LILCBRA

I wish I didn't have all of these balls in the air
Mod Dude
Dec 6, 2005
6,446
5,423
194
Corn County USA
Oct 13, 2008
#2
  • Oct 13, 2008
  • #2
More than likely a 3.00 if it is a v8. That was what mine was. Best bet is to check the tag on the rear end though-that will tell you for sure.
 

LILCBRA

I wish I didn't have all of these balls in the air
Mod Dude
Dec 6, 2005
6,446
5,423
194
Corn County USA
Oct 14, 2008
#3
  • Oct 14, 2008
  • #3
I gave them to my brother I believe. I will ask if he is going to use them-might take a few days to let you know.
 
S

stang74shelby

New Member
Aug 14, 2008
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soon Indianapolis
Oct 16, 2008
#4
  • Oct 16, 2008
  • #4
Glenn_MII said:
Do you have your original gears?
I want to put 3.00's in mine so that it can be driven several days out of the week without revving the hell out of it and wasting gas.
Click to expand...

I bought an extra set of 2.79's from ebay to put in the cleveland stang i got with the 4.11 spool
:SNSign:
 

Wart

I'm Mad as HELL and I'M not Gonna Take it ANYMORE!
Founding Member
Sep 1, 1998
408
3
58
NE Ohio
Oct 18, 2008
#5
  • Oct 18, 2008
  • #5
IIRC the V8 manual was a wide ratio?

Anyhow, if the 13 inch tires are still being used there should be no real problem using 2.79 gears with the 4 gear.

When I lived in the Pittsburgh / West Mifflin area (hilly) I ran 2.79s with ~ 205/70/14 tires behind a RUG wide ratio and 'stock power' 302, but then I had a 11" clutch so it could take a little more abuse.

Mileage went from the 15~17 mpg range on the open road to 20 mpg or more. 17 mpg out of a stock V8 II was almost unheard of.

Sure, the "1/4 mile" times (of the line performance) sucked but drag racing always seemed like masturbation and I haven't actually street raced going on 30 years.
 
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