1985 Buick Regal

[Spike]

I had a 200R4 transmission in my regal. Now i have a 350 transmission.I need to know what speedometer gear i need now.Thanks.

 

[Slowpoke]

I believe to get the right gear you'll need to know what gear is in the rear end as well.

 

[Malibu795]

I believe to get the right gear you'll need to know what gear is in the rear end as well.

And tire size

 

[pagrunt]

Besides knowing the rear gear ratio & tire size, having an idea of the drive gear on the output shaft will help as there can be several driven gears listed for gear/tire combination.

 

[565bbchevy]

I bought this for my Regal, it works well and I have it on top of the dash

Amazon.com

 

[Malibu795]

I bought this for my Regal, it works well and I have it on top of the dash

Amazon.com

Been thinking on getting a couple of those

 

[383_StealthRam]

If you still have the 2004R, can't you just count the teeth on it's drive and driven gear then you'll have the original ratio and can try to locate the proper gear to achieve that same ratio for the 350? I think the drive gears on output shaft might actually be the same, you'll have to double check that of course.

Here's a link that might help sort things out...

TCI Auto Speedometer Gear Calculator - TCI® Auto

Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. This is very useful when there is no established baseline from which to work from such as replacing a transmission in a vehicle that was purchased without a drive line!

www.tciauto.com

HTH

 

[olskool]

you need a matching set of gears for the 350 unit, this will put you in the ballpark, maybe dead on,,,,,,,,,,,,,,,,