Author Topic: 1967 12-bolt  (Read 900 times)

ZLP955

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1967 12-bolt
« on: March 18, 2014, 09:44:29 AM »
Have come across a mono-leaf 12-bolt with the following details:
Cast date L66 (December 6, 1966)
Axle code QL1229G (3.31 ratio, non-posi, December 29 assembly)
It has the radius rod bracket on the passenger side.
Now I should point out, am not familiar with 67's, but a bit of research indicates this would've been fitted to either an SS (L35, L48 or L78) or a Z/28.
Without a corresponding car, obviously no way to say for sure which of the above it actually was from, but based on the original ratio (3.31 open), could any of the above RPOs be ruled out, or deemed less likely than others?
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

Kelley W King

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Re: 1967 12-bolt
« Reply #1 on: March 18, 2014, 07:01:50 PM »
I think on the L78 and Z it would have been special order.
69 Z28 RS Scuncio Hi Performance
69 SS L78
67 SS Chevelle
64 Corvette
66 GTO Tiger Gold
77 Trans Am Special Edition

ZLP955

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Re: 1967 12-bolt
« Reply #2 on: March 18, 2014, 09:40:57 PM »
Thanks Kelley. I figured a 3.31 with a 302 would be a dog to drive, so less likely. Although this is purely a matter of speculation, does anyone know what the "standard" diff ratios were with the L35 and L48?

Mike S

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Re: 1967 12-bolt
« Reply #3 on: March 18, 2014, 09:45:32 PM »
Thanks Kelley. I figured a 3.31 with a 302 would be a dog to drive, so less likely. Although this is purely a matter of speculation, does anyone know what the "standard" diff ratios were with the L35 and L48?
I'm doing this from memory, my L35 w/TH400 has the 'standard' 3:07 open and the L35 w/Muncie has the 'performance' 3:31 posi.
Mike
« Last Edit: March 18, 2014, 10:20:18 PM by Mike S »
67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Restored

Jon Mello

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Re: 1967 12-bolt
« Reply #4 on: March 18, 2014, 10:40:59 PM »
QL is the standard code used for the L48 cars. 99.9% odds that's what it came out of. Probably has the single bolt hole in the traction bar bracket on the axle, correct?
Jon Mello
CRG

ZLP955

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Re: 1967 12-bolt
« Reply #5 on: March 19, 2014, 06:08:34 AM »
John and Mike, thanks for the info, much appreciated. Yes, has one hole in the bracket.