The Ford Barn

RyanAK · 11-13-2022, 04:19 PM

Are there any external markings on the rear differential to indicate gearing on an A?

Terry, NJ · 11-14-2022, 11:17 AM

No! The stock ratio is 3.78, not particularly great! But adequate! In time and as your engine power increases, you may want to go to a 3.54, or if you're really feeling strong (Engine wise) a 3.22 (3.25). But, I've done two of them and this job is not for someone who is not at least somewhat familiar with the way gears are fitted. It is time consuming, arbitrary, and a general PITA. (And that's its good side!) One of the most complex jobs you can do on a model A. No daydreaming on this job! Cost is about $700. Gear sets alone are about $465,. The gaskets are also shims and and the torque can have a lot of effects on bearing loads. However, I think Henry should have made the 3.54 an option. Much improvement! Getting back to fans, the 4 blade is not a lamination, The two blade is.
What ever possessed Henry to laminate two pieces to make one, I don't know? Extra work with no perceptical gain.
Terry

11-13-2022, 04:19 PM	#41
RyanAK Member Join Date: Oct 2022 Location: Mifflinburg, PA Posts: 42	Re: An Introduction and a First Early Ford Are there any external markings on the rear differential to indicate gearing on an A?

11-14-2022, 11:17 AM	#42
Terry, NJ Senior Member Join Date: May 2010 Location: Bucks Co, Pa Posts: 3,742	Re: An Introduction and a First Early Ford No! The stock ratio is 3.78, not particularly great! But adequate! In time and as your engine power increases, you may want to go to a 3.54, or if you're really feeling strong (Engine wise) a 3.22 (3.25). But, I've done two of them and this job is not for someone who is not at least somewhat familiar with the way gears are fitted. It is time consuming, arbitrary, and a general PITA. (And that's its good side!) One of the most complex jobs you can do on a model A. No daydreaming on this job! Cost is about $700. Gear sets alone are about $465,. The gaskets are also shims and and the torque can have a lot of effects on bearing loads. However, I think Henry should have made the 3.54 an option. Much improvement! Getting back to fans, the 4 blade is not a lamination, The two blade is. What ever possessed Henry to laminate two pieces to make one, I don't know? Extra work with no perceptical gain. Terry