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Old 08-22-2019, 05:16 PM
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67gtospud 67gtospud is offline
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Join Date: Aug 2012
Location: Seymour, Wisconsin
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Default What length Speedo cable?

I currently have a an 81” Speedo cable and its way to long. While my car is apart I’d like to put the correct length one in. I’ve got a super T-10 in the car with the Speedo cable hook up on the passenger side.

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1967 GTO, 432 (428+.030), 4-bolt mains, factory Nodular crank, scat rods, icon dished pistons, Lunati HR 243/251@.050, .618/.622 lift, Edelbrock 72cc round port heads, 10.5:1, offy 2-4 intake, Edelbrock 650cfm carbs, Super T10 trans (2.64 first), BOP 10 bolt w/ Eaton posi and 3.36 gears
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Old 08-23-2019, 10:07 AM
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Frank R Frank R is offline
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I just installed a 57” cable in my 67. My speedometer cable attaches on the drivers side of the tail shaft. The longer cables 83” were used on automatic and cars with the speedometer drive on the passenger side of the tail shaft. The longer cables allow the cable to loop around without binding on passenger side connections.

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Old 08-28-2019, 09:08 PM
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67gtospud 67gtospud is offline
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Quote:
Originally Posted by Frank R View Post
I just installed a 57” cable in my 67. My speedometer cable attaches on the drivers side of the tail shaft. The longer cables 83” were used on automatic and cars with the speedometer drive on the passenger side of the tail shaft. The longer cables allow the cable to loop around without binding on passenger side connections.
I’ve currently got an 82” cable and it’s way too long. I think I’ll order a 72” cable and give that a try.

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1967 GTO, 432 (428+.030), 4-bolt mains, factory Nodular crank, scat rods, icon dished pistons, Lunati HR 243/251@.050, .618/.622 lift, Edelbrock 72cc round port heads, 10.5:1, offy 2-4 intake, Edelbrock 650cfm carbs, Super T10 trans (2.64 first), BOP 10 bolt w/ Eaton posi and 3.36 gears
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Old 08-29-2019, 08:47 AM
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Frank R Frank R is offline
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Before you order the new cable mark your old one at 72”. If you can loop it and make it line up to your tail shaft without a tight bend you should be fine.

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