Re: 1950 327 with Ultramatic - Idle Speed

Posted by JeromeSolberg On 2023/2/4 1:48:53

I wonder if you aren't accidentally adjusting the idle speed in "Low" rather than "High". There will be more drag in low (or reverse) than High. The range selector order is different than a modern car.

Have you checked the fluid level in the Ultramatic? There is a procedure to do that. Have to run the car in neutral for a bit and then check with the engine is off, but just after you've turned it off. Easier if the car is up on ramps (best) or jackstands.