The Ford Barn - View Single Post - T-5 5 speed trans VS Mitchell overdrive

Railcarmover · 08-31-2019, 07:33 PM

Nice work Dave.Im a firm believer in babbit and gravity oil provided you don't spin the engine too hard.keep it under 3500 and your fine with the original lower end.The torque curve of a modified flathead limits you by nature,I built in some insurance using stock valve springs to hold mine back.Dave to his credit built a lower end to withstand just about anything you can throw at it,and kept a high reliability factor by limiting the valve size and running a flathead.What amazes me is you can basically double the output of the engine (in Daves case,triple) without shortening the engine life..damn few engines you can do that with..

08-31-2019, 07:33 PM	#37
Railcarmover BANNED Join Date: Apr 2017 Location: Sacramento Posts: 1,262	Re: T-5 5 speed trans VS Mitchell overdrive Nice work Dave.Im a firm believer in babbit and gravity oil provided you don't spin the engine too hard.keep it under 3500 and your fine with the original lower end.The torque curve of a modified flathead limits you by nature,I built in some insurance using stock valve springs to hold mine back.Dave to his credit built a lower end to withstand just about anything you can throw at it,and kept a high reliability factor by limiting the valve size and running a flathead.What amazes me is you can basically double the output of the engine (in Daves case,triple) without shortening the engine life..damn few engines you can do that with..