th350 gear ratio check

Charles Stewart · 07-04-2022, 09:57 AM

No answer after 275 visit ???
I may be completely wrong with that and I never played with an auto transmission but I will try a tentative solution here.
The standard gear set for a TH 350 is: 2.52, 1.52, 1 to 1 or 2.75, 1.52, 1 to 1. That means if you put your trans in first gear and turn the input shaft 2 and a half rotation (2.52), the output shaft should turn one rotation and so on (1.52 and 1 of rotation for the input shaft, for the second and third gear, should give you one rotation for your output shaft).
You can make a tool with an old trans yoke and work on the output shaft side. Make 1 turn from your output shaft and count the rotation of the input shaft.
I repeat, I may be totally wrong but it’s the way I see it.

07-04-2022, 09:57 AM	#2
Charles Stewart Member Join Date: Jul 2016 Posts: 389 Likes: 1,655 Liked 753 Times in 213 Posts	Re: th350 gear ratio check No answer after 275 visit ??? I may be completely wrong with that and I never played with an auto transmission but I will try a tentative solution here. The standard gear set for a TH 350 is: 2.52, 1.52, 1 to 1 or 2.75, 1.52, 1 to 1. That means if you put your trans in first gear and turn the input shaft 2 and a half rotation (2.52), the output shaft should turn one rotation and so on (1.52 and 1 of rotation for the input shaft, for the second and third gear, should give you one rotation for your output shaft). You can make a tool with an old trans yoke and work on the output shaft side. Make 1 turn from your output shaft and count the rotation of the input shaft. I repeat, I may be totally wrong but it’s the way I see it.