Join Date: Sep 2011
Location: Christiansburg, Virginia
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I have been running a proshifted toploader in my car for 30 years. There are a few tricks to make it live, and these same tricks apply to any stick car. The Jerico is based off a toploader design with a lot of the toploader issues fixed. I'm going to guess you are having input breakage or shearing gear teeth on the input or cluster gear. Without knowing your combo, i can't suggest a gear ratio, but you need to select a combo that has the thickest gear tooth on both the input and cluster gears, then adjust your rear gear and tire size to get back to the desired overall gearing. Also, your clutch set-up will mean everything to breakage. A hard hitting clutch will break an anvil and stand the car on the bumper. There are a lot of options on clutches. The guys at RAM always did a great job for me. I am currently running a sintered iron dual disc with bronze inserts on the flywheel and pressure plate. base pressure is dependant on track conditions, but is in the 400-600 lb range. If you want to get away from these types of transmissions (cluster under main shaft, face or od gear engagement, shift levers thru side of case), I would look at a Liberty. It is 100% reliable and is smaller and lighter than a Lenco.
GET IN, SHUT UP, AND HOLD ON!!!!
'71 MERCURY COMET, 466+, CLUTCHLESS TOPLOADER
Last edited by mr4speed; 10-14-2011 at 09:28 PM.