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49fordv8f4 · 06-20-2016, 07:25 PM

Ross, I would have to disagree with you on this one. The axle Mark has in this truck now is 6.66 ratio. The two speed axles were generally 5.83 in high and 8.11 in low, sometime after '48 there was another ratio listed for the two speed, 6.33-8.81. I don't know how common the lower one was, we are hoping he has the high geared axle. He will get better road speed with a two speed axle. I had the 5.83-8.11 axle in my '47 COE and it would easily run 60. I was probably running it harder than most would, but you have to remember its not a 216-235 Chevy. IIRC at 60 it was running about 3200 rpm.
Mark

06-20-2016, 07:25 PM	#20
49fordv8f4 Senior Member Join Date: Aug 2013 Location: Yellville,AR Posts: 222	Re: 1st haul under new power Ross, I would have to disagree with you on this one. The axle Mark has in this truck now is 6.66 ratio. The two speed axles were generally 5.83 in high and 8.11 in low, sometime after '48 there was another ratio listed for the two speed, 6.33-8.81. I don't know how common the lower one was, we are hoping he has the high geared axle. He will get better road speed with a two speed axle. I had the 5.83-8.11 axle in my '47 COE and it would easily run 60. I was probably running it harder than most would, but you have to remember its not a 216-235 Chevy. IIRC at 60 it was running about 3200 rpm. Mark Last edited by 49fordv8f4; 06-20-2016 at 07:49 PM.