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Drivetrain => Transmissions => Topic started by: GS66 on August 22, 2023, 08:48:06 PM

Title: 200-4R upgrade
Post by: GS66 on August 22, 2023, 08:48:06 PM

So far I am loving the 200-4R in the 66 GS. The car seems to like it even with the 3.08 gears. The car is smooth and quiet and 70 MPH is about 2300 RPM. It sure is noticeable now when I drive one of the other Gran Sports.

Title: Re: 200-4R upgrade
Post by: Jim on August 23, 2023, 10:07:01 AM

Hi ,what adapter did you  use? Jim

Title: Very happy to have one. (Re: 200-4R upgrade)
Post by: elagache on August 23, 2023, 01:09:30 PM

Dear Jim, Jim, and mid-60s Buick caregivers who enjoy some modern car touches,

Quote from: GS66 on August 22, 2023, 08:48:06 PM

So far I am loving the 200-4R in the 66 GS. The car seems to like it even with the 3.08 gears. The car is smooth and quiet and 70 MPH is about 2300 RPM. It sure is noticeable now when I drive one of the other Gran Sports.

I'll gladly second that motion!  My Dad and I first discussed trying to get an overdrive transmission fitted to Biquette around 1980!  Even on surface streets at over 35 mph, Biquette goes into overdrive and is that much quieter - just like a modern car.  Obviously you are tinkering with the authentic 60s car driving experience,  but you if want to make the car more pleasant to drive, an overdrive transmission will go a long way in achieving that.

Cheers, Edouard

Title: Re: 200-4R upgrade
Post by: Jim on August 23, 2023, 01:55:33 PM

I put in overdrives in our last three cars 68 elcamino, 42 buick,39 lasalle  really miss it in the gs

Title: Re: 200-4R upgrade
Post by: GS66 on August 23, 2023, 02:57:14 PM

I used the Eelco adapter because that is what I had but the Bendsten is probably better.

Title: Re: 200-4R upgrade
Post by: Jimbo on August 23, 2023, 03:46:45 PM

Also have a 200-4R in my 65 Skylark out of a 87 Grand National (BRF) code with a 342 gear in a 65 GS posi. Great on the highway.