Transmissions and Drivetrain Need help with your trans? Problems with your axle?

hole for the shifter on a manual swap

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Old 01-30-2001, 04:57 AM
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Car: '88 Firebird Formula 350
Engine: Built 383 TPI
Transmission: Built 700r4
Axle/Gears: 9 bolt, 3.27:1 Posi
hole for the shifter on a manual swap

I need some pictures of the hole that the shifter goes through in the floor. I would rather see manual conversions, but I also would like to see some stock holes. Thanks for the help.

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'82 Firebird, dead stock, 9 bolt disc rear, over 200,000 miles and still going strong, more to come...
http://www.spinfrenzy.com/stingerssx...easures.html#4
Old 01-30-2001, 01:04 PM
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Ive got some pictures of your Moms stock hole...

Sorry, Couldnt resist !



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Old 01-30-2001, 07:53 PM
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Here ya go:


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FORMULA 350 TK
Southern California 3rd Generation F-Body OrganizationŠ
Old 01-31-2001, 03:01 PM
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Car: '88 Firebird Formula 350
Engine: Built 383 TPI
Transmission: Built 700r4
Axle/Gears: 9 bolt, 3.27:1 Posi
Thanks Tom. Did you measure straight across from the seat bolts? And do I really need to make the hole that large?



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'82 Firebird, dead stock, 9 bolt disc rear, over 200,000 miles and still going strong, more to come...
http://www.spinfrenzy.com/stingerssx...easures.html#4
Old 01-31-2001, 05:41 PM
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I took measurements from a factory 3rd gen, T-5 equipped car. That hole is the exact size, and the exact location as factory. The lower boot will cover that hole with approx. an inch all around for the sheet metal screws to hold it down.
Old 01-31-2001, 06:29 PM
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Car: Trans Am
Engine: L69
Transmission: T5
Axle/Gears: 3.73
Tom what size is the hole?? I am going to be doing this swap soon...What did you use to cut it?? It looks great! Thank You Kevin
Old 01-31-2001, 10:33 PM
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The factory GM cutout measured 5.5 x 7.0 inches. I made this cutout 6 x 7 inches.

I drilled a hole in each corner to fit a sabre saw blade and then used the jig saw to cut it out.

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Southern California 3rd Generation F-Body OrganizationŠ
Old 02-01-2001, 03:41 PM
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Car: Trans Am
Engine: L69
Transmission: T5
Axle/Gears: 3.73
Hey thinks for your help.. Kevin
Old 02-02-2001, 01:33 AM
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Hey Tom, I have a question. I'm planning on making the cutout pretty soon, but I think that the original factory dimension is just too big. I purchased an aftermarket rubber shift boot with an approximate dimension of 4.5 x 6 inches. I was thinking of cutting the hole to this dimension, which allows for enough "transmission shift" movement. This will also give me the option to enlarge the hole if I later decide to put in a 6-speed - I've read that with the 6-speed, the hole requires enlarging 2 inches back. What do you think? Is this enough clearance?
Old 02-02-2001, 08:25 PM
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Originally posted by IROCZteady:
Hey Tom, I have a question. I'm planning on making the cutout pretty soon, but I think that the original factory dimension is just too big. I purchased an aftermarket rubber shift boot with an approximate dimension of 4.5 x 6 inches. I was thinking of cutting the hole to this dimension, which allows for enough "transmission shift" movement. This will also give me the option to enlarge the hole if I later decide to put in a 6-speed - I've read that with the 6-speed, the hole requires enlarging 2 inches back. What do you think? Is this enough clearance?
My Opinion:

Don't use a smaller aftermarket rubber boot. Get a genuine GM boot, and cut the hole the approximate correct size.



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Southern California 3rd Generation F-Body OrganizationŠ
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