That's how you do it right ? 44%16= 2.75

 

Here is a pic of my situation

 

4.0L BLOCK 53008405 posted for refrence

 

Double check the count on them teeth. I think 3.25 is the lowest the put in a 9".

Or maybe that's right and you just got an oddball?

 

2.75 is possible since that rear came out of a car. i've heard of a few racers running 2.47 gears. but if the numbers on the ring gear are 42-10 then that would be a 4.20 gear. maybe you counted teeth wrong? do you know what it came out of?

here's some good info for ya

 

I cut it out of a lincoln not 100% it was stock to the car it was a durby car. The stamp does say 42-10 but count 44-16?

 

well lincoln makes sense since there were coils mounted factory on it, i believe it was the lincoln's and galaxies that ran the coils. well it's possible you got a high geared 9 then.

 

One of my old teachers have 2.47s in his land speed car. But I can't imagine under 3 in anything from a factory

 

Yea I counted them again a couple times 44-16 and it's 61.5 inch long to the mounting bolts for the axle. With the shafts it's 65 to lugnut to lugnut

 

i think my friends camaro is geared at 2.73 or somewhere around there

 

the versailles (sp?) came with 2.47:1, 2.50:1, 2.75:1 & 3.00:1 options if i remember right, a buddy was restoring one back in high school and i just remember we were shocked by the gear ratio in it.
well it's from a lincoln so i'm not surprised if that's your ratio now.

double check the diameter and make sure it's not the 9 3/8 instead of the 9" that came in some 60's lincolns.

 

Think I will have to change the spool to fit 355s

 

since it's a full spool no i don't think so.

 

Where do I measure to see if it's 9 3/4?

 

what's the casting number on the pinion support?

more good 9" info