Author Topic: Bell Housing Alignment tool  (Read 812 times)

737driver

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    • My Trans Am - Restoration Project
Bell Housing Alignment tool
« on: October 16, 2023, 10:00:11 PM »
I decided to replace my BW ST-10 4 speed transmission recently after it started making some unhappy noises. I decided to go with a TKX 5 speed from American Powertrain.
When installing the TKX one important step is to make sure the bell housing is aligned within tolerances (.005” ). If the bell housing is not aligned properly then a set of offset dowel pins will be need. I used a set of .007 offset dowel pins from RobbMc.
This is typically done with a dial indicator and can be job that requires and bit of trial and error. Using this alignment tool from Browell makes the job very easy and is very accurate All in all, the whole job took less than 25 minutes or so.

Here are some basic pics,
Jim
1979 Trans Am- Heritage Brown -W72 (Pontiac 400) -4Speed-WS6
1972 LeMans Convertible
1977 Trans Am
1972 Firebird
2000 TransAm WS6
1968 Lemans Converible
1979 TransAm Gold WS6 400/4speed
1971 Firebird
1977 MGB  Roadster Convertible

Wallington

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Re: Bell Housing Alignment tool
« Reply #1 on: October 16, 2023, 11:13:25 PM »
Neat tool. The dowel flats can be turned until the offset matches the tool correctly.

FormTA

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Re: Bell Housing Alignment tool
« Reply #2 on: October 17, 2023, 04:10:34 AM »
Interesting. I would think sweeping the hole in the bell housing would be more accurate but I guess most folks probably don't have good indicators at home. This is probably an good solution to get them close enough. Thanks for posting. Interesting solution to help limit transmission wear.
79 Trans am low buck LS swapped
79 Formula 301 (Work in progress)
67 RS Camaro (waiting it's turn)
69 Dodge charger on late model charger chassis
49 Ford F1 on a 2003 Chevy ZR2 Chassis (current project)
Names, Luke. If I hear anyone telling me they're my father....

737driver

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  • "Life is hard, It's Harder when you're Stupid.."
    • My Trans Am - Restoration Project
Re: Bell Housing Alignment tool
« Reply #3 on: October 17, 2023, 11:17:03 PM »
Afterwards I did use a dial indicator to make a few measurements. Basically I wanted to see what it would read. At all four points (12,3,6,9 clock positions) the readings were less than .002 all the way around. The tool really works pretty good and really simplifies the job.
Jim
1979 Trans Am- Heritage Brown -W72 (Pontiac 400) -4Speed-WS6
1972 LeMans Convertible
1977 Trans Am
1972 Firebird
2000 TransAm WS6
1968 Lemans Converible
1979 TransAm Gold WS6 400/4speed
1971 Firebird
1977 MGB  Roadster Convertible

b_hill_86

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Re: Bell Housing Alignment tool
« Reply #4 on: October 18, 2023, 08:15:46 AM »
Good to know. Also jealous. I’d love to go 5 speed someday. Probably won’t but you never know.
-Brian-

1977 Trans Am 400 4 speed

Re: Bell Housing Alignment tool
« Reply #4 on: October 18, 2023, 08:15:46 AM »

silver78

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Re: Bell Housing Alignment tool
« Reply #5 on: November 21, 2023, 07:55:57 PM »
neat tool, I made one from old auto flex plate and dial indicator. Also did the TKX 5 speed swap over the summer. 308 rear gear in 5th gear is hauln' the mail!
MY BUILD THREAD:  http://transamcountry.com/community/index.php?topic=41850.0

Previous builds:
65 Galaxie sold
67 camaro RS sold
68 camaro RS sold
69 camaro sold
72 Nova SS
81 T/A 4 spd sold
86 IROC sold
88 Formula 350 sold
92 Z-28 sold
93 9C1 Caprice sold
94 Impala SS sold

b_hill_86

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Re: Bell Housing Alignment tool
« Reply #6 on: November 21, 2023, 10:35:08 PM »
5 speed with 3.08 you say? Did you order custom ratios to accommodate the 3.08 better? I’d always been under the impression a 3.08 was too tall for OD
-Brian-

1977 Trans Am 400 4 speed

silver78

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Re: Bell Housing Alignment tool
« Reply #7 on: November 25, 2023, 10:20:02 PM »
I bought trans part # TCET 18083 that uses the lower 3.27 first gear ratio. I shift into 5th at 60 mph. Also, instead of a custom drive shaft I used the Ford racing aluminum drive shaft summit part# SUM-790303 and rear u joint spicer 5-793X to mate the ford drive shaft to my stock GM rear. That was a perfect length and fit. I did alot of research before buying anything...swap is not low budget by any means. If I  can get a minute I'll post a new thread of my entire swap. I  took alot of pics too.
MY BUILD THREAD:  http://transamcountry.com/community/index.php?topic=41850.0

Previous builds:
65 Galaxie sold
67 camaro RS sold
68 camaro RS sold
69 camaro sold
72 Nova SS
81 T/A 4 spd sold
86 IROC sold
88 Formula 350 sold
92 Z-28 sold
93 9C1 Caprice sold
94 Impala SS sold

Re: Bell Housing Alignment tool
« Reply #7 on: November 25, 2023, 10:20:02 PM »
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