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rear gear

moonshinecult

Member
Joined
May 24, 2007
Messages
5
Location
dublin va.
Corvette
black 79 coupe
gust got my 79 on the road (2 tanks of gas) and it seem to be geared really low
anyone know what ratios were avalible in 79 and where are the numbers stamped on the diff. like to know what i,ve got
 

GTR1999

Well-known member
Joined
Sep 4, 2003
Messages
1,146
Location
New Haven CT
Corvette
1969,1972,1975
base eng 4 spd usually 336 automatics 308. L82 370 4 spd and 355 auto. Of course they could have been changed over the years as well. There is a letter code stamped in the bottom of the diff.
 

duke94

Well-known member
Joined
Jan 30, 2007
Messages
277
Location
Ann Arbor, MI
Corvette
71' convert and 78' both Red
79axlecodes.jpg
 
Joined
Jan 1, 2002
Messages
7,246
Location
Washington, Michigan
Corvette
'67 Marina Blue Convertible
You'll find the ratio code and the assembly date stamped on the bottom flange of the diff housing, between the spring retainer plate and the camber strut rod bracket. Will require some heavy cleaning to see the stamped characters. :)

DiffCode1650.jpg


:beer
 

Evolution1980

Well-known member
Administrator
Joined
Feb 25, 2002
Messages
4,302
Location
Cleveland, Ohio
Corvette
ZZ4, 700R4, Steeroids rack & pinion, VB&P Brakes
Or you can jack up the rear of the car, put it in neutral and have someone spin the tire one full revolution and you count how many turns the driveshaft makes. My wheel once fully around turns my drive shaft 3.08 turns! Not that I could measure the .08, but I know it wasn't 3.5 or a little past 4... :cool
 

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