SS/GT classes transmission?

Dwight Southerland · 06-19-2020, 12:15 PM

A way to cross reference engine-transmission application is to look at the Tech Bulletin for the engine in question. The carburetor list will show OEM carburetors and their usage with the engine. If it only lists "SM" application ("sychromesh" or "standard manual") the engine was only available with a manual transmission. In the case of the 1969 Ford 302-290hp, the 1969 Ford tech bulletin lists "Holl C9ZF-J/SM ONLY,(3069)" as the legal carb selection. Since it says "SM ONLY", the engine was available with a manual transmission only. In the same way, on the same bulletin the carb for the 429-320hp engine shows "Ford C9AF-J/AUTO ONLY", which means that engine was only available with an automatic transmission. The other engines on the 1969 Ford tech bulletin have both SM and Auto carburetors listed so they can be considered to be able to use either type of transmission. That determines classification whether or not the class guide indicates manual or automatic.

Maybe this will help some with those determinations.

06-19-2020, 12:15 PM	#1
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 1,999 Likes: 64 Liked 772 Times in 192 Posts	Re: SS/GT classes transmission? A way to cross reference engine-transmission application is to look at the Tech Bulletin for the engine in question. The carburetor list will show OEM carburetors and their usage with the engine. If it only lists "SM" application ("sychromesh" or "standard manual") the engine was only available with a manual transmission. In the case of the 1969 Ford 302-290hp, the 1969 Ford tech bulletin lists "Holl C9ZF-J/SM ONLY,(3069)" as the legal carb selection. Since it says "SM ONLY", the engine was available with a manual transmission only. In the same way, on the same bulletin the carb for the 429-320hp engine shows "Ford C9AF-J/AUTO ONLY", which means that engine was only available with an automatic transmission. The other engines on the 1969 Ford tech bulletin have both SM and Auto carburetors listed so they can be considered to be able to use either type of transmission. That determines classification whether or not the class guide indicates manual or automatic. Maybe this will help some with those determinations. __________________