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#1
02-07-2015, 08:36 AM
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68 gto rear
Could a 390 zk 68 rear be ordered in a ys auto a/c gto . ?? Picked up another 68 gto project that has original ys / turbo 400 but has the zk rear and I was wondering if it could be original .cant make out the date but its the 68 part number on the housing?
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68 firebird 400 hardtop 68 gto convertible auto a/c pw (project) 68 gto hardtop 4spd (project) 69 firebird convertible 350/auto 72 formula 400 4sp lucerne blue a/c (project) |
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#2
02-07-2015, 09:18 AM
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9798235?
I don't see why not - I picked up the same rear out of a WT 400 68 years ago that was special ordered that way. When I pulled into the guys driveway he had just torched off the front horns of the frame because somebody else wanted the disc brake setup - it was a special order convertible frame under the hardtop car. 
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Some guys they just give up living And start dying little by little, piece by piece, Some guys come home from work and wash up, And go racin' in the street. Bruce Springsteen - Racing In The Street - 1978 |
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#3
02-07-2015, 09:53 AM
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Boss thanks .yea thats the number. Cant quite make out the date code above it. I havent phs car yet.. Wasnt sure if there where certain gear options not available for a/c cars.
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68 firebird 400 hardtop 68 gto convertible auto a/c pw (project) 68 gto hardtop 4spd (project) 69 firebird convertible 350/auto 72 formula 400 4sp lucerne blue a/c (project) |
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#4
02-07-2015, 09:59 AM
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Quote:
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Buzzards gotta eat... same as worms. |
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#5
02-07-2015, 10:08 AM
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many Pontiac 8.2's were swapped out over the years. Before learning how to set up differentials, I used to pick up half a dozen posi 8.2 Pontiac rears a year. Nearly every one of them went into a GTO whose owner wanted a "better" ratio and whose car had a high ratio 2.78 or 2.93 rearend. Also dealt with multiple dozens of owners who had blown up their gray iron 8.2's. Even picked up numerous nodular 8.2 housings and well worn 4 pinion carriers that gears were busted up.
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Buzzards gotta eat... same as worms. |
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#6
02-07-2015, 10:10 AM
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no 3.90s from GM with a/c, warranty issues would be massive
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Mark.. The Goat whisperer "I spent a lot of my money on booze, crazy women, and fast cars. The rest I just squandered." 
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#7
02-07-2015, 10:37 AM
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I was surprised to find that rear in there. Realized it was a posi when I picked up the car but was expecting to find higher gear ratio.
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68 firebird 400 hardtop 68 gto convertible auto a/c pw (project) 68 gto hardtop 4spd (project) 69 firebird convertible 350/auto 72 formula 400 4sp lucerne blue a/c (project) |
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#8
02-07-2015, 10:39 AM
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Always a nice surprise!
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Buzzards gotta eat... same as worms. |
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#9
02-07-2015, 06:56 PM
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Sorry, missed the A/C part - reading too fast.
Roger & Mark caught it and gave the correct answer.
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Some guys they just give up living And start dying little by little, piece by piece, Some guys come home from work and wash up, And go racin' in the street. Bruce Springsteen - Racing In The Street - 1978 |
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#10
02-08-2015, 09:08 AM
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2.93, 3.08, 3.23 are only rear gears available on gto with with a/c
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