Other Cadillac Engines Discussion, 1958 365 Engine Rocker Arm Ratio in Cadillac Engine Discussion; Does anyone know what the rocker arm ratio is on the 365 engine? I'm asking for a couple reasons. First, ...
- 07-16-10 08:22 AM #1Cadillac Owners Member
- Automobile(s): 1958 Sixty Special
- Join Date
- Jul 2010
1958 365 Engine Rocker Arm Ratio
Does anyone know what the rocker arm ratio is on the 365 engine? I'm asking for a couple reasons. First, I'm preparing to overhaul the engine, gathering parts, and am working with Lunati on a high-torque but smooth profile. They asked what the ratio is so they can determine the best grind.
Second, I'm also building a racing Model T Ford engine, and it will have a 1922 Laurel Roof Liberty 8 overhead valve head, and the rocker arms and shaft are worn out. What is on the head presently isn't right as the assy. is a poor fitting (hacked) replacement. It appears a Cadillac 365/390 shaft could be used with some modifications, but the rocker arm ratio I need for that head is 1.5:1.