The Ford Barn - View Single Post - L-100 & 9" clutch

Ol' Ron · 12-02-2021, 02:31 PM

Brian
Back in the 60's I built the engines for a sportsman stock car with a 258 max displacement, along with allot of other rules like stock size valves. This was to keep the cost down. after 8 years we had perfected the ' PERFECT CRANK ASSY. The lightest crank assy was the 38/41 91a and forged true pistons. we used Silverlight pistons The Jahnns were made from Lead. an Aluminum flywheel and pressure plate from Shafer. I don't think anyone makes an alum clutch any more. Thhis and 400jr cam was the ultmate powerplant for most of the cars.. I used a 33/34 " camel back intake hollowed out and a 2GC carb. The last 2 years befor the SBC engines replaced the flatheads I switched to a Sig Eroson D410 cam which had better power in the mid range. This cam is nonger available. I have on if someone wants to copy it Much better than the L-100 or 400jr. This little enging could really pull for its size. I built a similar engine for the Hydroplane "Baby Ruth" the boat ran in the 60 mph range.

12-02-2021, 02:31 PM	#42
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,860	Re: L-100 & 9" clutch Brian Back in the 60's I built the engines for a sportsman stock car with a 258 max displacement, along with allot of other rules like stock size valves. This was to keep the cost down. after 8 years we had perfected the ' PERFECT CRANK ASSY. The lightest crank assy was the 38/41 91a and forged true pistons. we used Silverlight pistons The Jahnns were made from Lead. an Aluminum flywheel and pressure plate from Shafer. I don't think anyone makes an alum clutch any more. Thhis and 400jr cam was the ultmate powerplant for most of the cars.. I used a 33/34 " camel back intake hollowed out and a 2GC carb. The last 2 years befor the SBC engines replaced the flatheads I switched to a Sig Eroson D410 cam which had better power in the mid range. This cam is nonger available. I have on if someone wants to copy it Much better than the L-100 or 400jr. This little enging could really pull for its size. I built a similar engine for the Hydroplane "Baby Ruth" the boat ran in the 60 mph range.