Many years ago, I heard of a shade tree mechanics way of finding out what gears you are using by marking the tire and the drive shaft, then rotating the wheel and count the revolutions the drive shaft makes to equal one rotation of the wheel. Is this correct ?
I have a Ford 9" with a Currie pumpkin. The man I bought it from said it's a locker with 331 gears. I red the Currie tag on the axle housing and it's 7136.
When I called the company, he said he does not have any listed of that number ? Plus, they don't even make a 331.
Here's what they have- 300-325-350-370.
They and Lone Star Classics said their sure, it's a posi with 370 gears.
The axle may be a 28 spline not the 31.
I talked to a elderly man that has raced many different drag cars since the
60's, has had Cobras before and now has a Superformance with a side oiler with 570 HP and makes some cobra parts and has a dyno for many years testing racing parts. He sounds like he knows what he's talking about.
Anyway, he thinks since our cobras are so light, that my 3550 tranny and the posi will be fine unless I plan on using slicks at the track and dumping the clutch. He knows several people that have big HP/TQ with these same parts and have never had a problem. I too believe that but, I could sell my tranny and have at least some money in my pocket versus blowing the thing up.
I found a TKO dealer that will sell me the 600 for far less than the $2,195 most of them sell at, including Summit.
on what to do.
Figuring out what 3rd member gears ?
Threaded Mode
