TH400 replacing 200R4 speedo calibration

[TEW1320]

For those that have replaced their 200r4 with a th400 in a turbo buick; what speedo gear in the th400 did you use to get the speedo close to accurate. (stock rear tire and 3.54 gear)

 

[REAPER231]

For those that have replaced their 200r4 with a th400 in a turbo buick; what speedo gear in the th400 did you use to get the speedo close to accurate. (stock rear tire and 3.54 gear)

i didnt change anything speed seems to be right on in my car with the th400

 

[novaderrik]

google "speedometer calibration" and start clicking.

 

[TEW1320]

thanks. bowling and grippo (strange name) has a very useful calibration program calculator.

 

[TEW1320]

i didnt change anything speed seems to be right on in my car with the th400

thanks, i will try what's built in first and maybe i'll get lucky. BTW what did you use for a trans mount?

 

[REAPER231]

thanks, i will try what's built in first and maybe i'll get lucky. BTW what did you use for a trans mount?

hr poly trans mount with stock 200r4 crossmember . My trans has a trans break . From ck performance:biggrin:

 

[TEW1320]

hr poly trans mount with stock 200r4 crossmember . My trans has a trans break . From ck performance:biggrin:

thanks, i was hoping there was a direct fit mount with the stock member

 

[REAPER231]

thanks, i was hoping there was a direct fit mount with the stock member

do you have a driveshaft made for it . me and my brother put a bmr 3.5 with solid 1350 u joints to the factory 8.5 rear

 

[TEW1320]

do you have a driveshaft made for it . me and my brother put a bmr 3.5 with solid 1350 u joints to the factory 8.5 rear

no not yet, was going to measure once the trans was installed. what length did you order to fit?

 

[REAPER231]

no not yet, was going to measure once the trans was installed. what length did you order to fit?

WELL EVERY CAR IS A LITTLE DIFFERENT , BMR WANTED IT FROM THE BACK OF THE TH400 TAIL SHAFT TO THE CENTER OF THE REAR U JOINT .I THINK MINE WAS 53 3/4 ".

 

[SSedan64]

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