727 Speedo Plug

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AzDUSTER

AzDUSTER

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Hi - I have a 71 Duster with a 727 we are putting back together. Going with a GPS speedo ... need to cap or seal off the old speedo port on the transmission.

Was there anything sold to do this or has anyone got a way they have done it ?

Thanks !
 
A&A Transmission sells a plug. roughly 3-4 bucks. They call them hole blockers.
 
mopowers said:
An 1-49/64 freeze plug works well.
Click to expand...
Popular on hemi race transmissions

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SPEEDOMETER BLOCK OFF PLUGS
CNC machined billet aluminum speedometer hole block off plug. These will fit almost every rear wheel drive automatic and manual transmission from 1966 on up. Uses the factory bracket and bolt to secure it to the transmission. Includes a new o-ring. This is a direct bolt in replacement for the factory speedometer adapter, no modifications are necessary. 100% Made in the USA. $30 each plus shipping. If you have any questions or want to place an order email mrrandyj@aol.com

https://board.moparts.org/ubbthread...ad/Number/406411/filename/20200628_174859.jpg

https://board.moparts.org/ubbthread...ad/Number/406412/filename/20200628_175240.jpg
 
Just put this one in my 904 from a and a $25
Comes with an O ring and the clamp and bolt.
20200907_103212.jpg
 
I use a freeze plug and rtv simple and cheap
 
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