Author Topic: BL code rear axle in 68Z28  (Read 1911 times)

JohnKY

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BL code rear axle in 68Z28
« on: April 16, 2021, 12:17:13 AM »
Looking to verify that a non posi. 3.07 12 bolt was available to order on a 1968 Z28.

 Yes? No?

bertfam

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Re: BL code rear axle in 68Z28
« Reply #1 on: April 16, 2021, 12:32:50 AM »
Yes

Ed

JohnKY

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Re: BL code rear axle in 68Z28
« Reply #2 on: April 16, 2021, 03:23:33 AM »
OK, thanks Bert.
 Not many ordered, I'm sure, and probably not much fun to drive.

x66 714

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Re: BL code rear axle in 68Z28
« Reply #3 on: April 16, 2021, 03:50:53 AM »
I took the 4.56 rear out my 68 Z/28 & installed a 3.31 into the car to go to the Street Machine Nationals one year. I'm glad mine came with 4.56s. 3.31s are not fun...not for me anyways....Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO. Purchased March 1976
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E. Purchased April 1981

69Z28-RS

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Re: BL code rear axle in 68Z28
« Reply #4 on: April 16, 2021, 12:27:15 PM »
I think with an M20 trans, one could 'live' with a 3.55 gear in a Z28, but I would not even try anything at 3.31 or worse....
09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette, '60 Corvette, '72 Corvette
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

bertfam

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Re: BL code rear axle in 68Z28
« Reply #5 on: April 16, 2021, 04:25:24 PM »
There are 4 Z28's in the database with the 3.07 axle. Three are documented and (a 68) even has the M21 transmission!

Ed

GMAD_Van Nuys

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Re: BL code rear axle in 68Z28
« Reply #6 on: April 16, 2021, 10:39:43 PM »
I believe the best mileage my friend's 1968 Z28 ever achieved was when he went skiing in Mammoth Lakes, CA and got 18 mpg, with 4.10 gears and F60-15 Goodyear tires.  Years later, we drove up to Mammoth in my 1998 Z28 with a 6-speed and got 30 mpg.  In daily driving on the street in the Los Angeles area, the 1998 Z28 would only get about 13 mpg as sitting in traffic takes its toll on mileage.

 

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