Re: stock class rear axle?
 

9 inch only on COPO -Cobra Jet and Drag pac is the way I understand it--I think NHRA had a post on what vehicles can use a 9 inch-FED 387

Re: stock class rear axle?
 

modern parts in 12 bolt will be great in there....
pro gear absolutely a must with ANY stick even a W car..... and correctly setup if it isn't you won't get a season out of it... Randall was going through a set of gears a season on his truck... I set them up and he has 6 years on them now...
knock on wood…. I have never hurt a gear or anything in my K/S car... gear has at least 300 runs.... spool, steel caps, 35 spline axle, chrome moly tubes,5/8 wheel studs all Mark Williams parts, I installed the tubes and caps and built the rest...

Re: stock class rear axle?
 

A 9 inch is legal in any 2008 and newer car.

Re: stock class rear axle?
 

Saw a 69 Camaro Stocker a few years ago with a 57-64 Pontiac r end in it at a Div. 3 Points race after any GM rearends were oked. They must have changed the ruling. Ford rearends are ok in certain years though????

Re: stock class rear axle?
 

Last I knew Olds was still General Motors.

Re: stock class rear axle?
 

That’s what I was thinking. ....Are you positively sure of that YAK ?

Re: stock class rear axle?
 

Doesn't make sense considering I was told I could run an 8 3/4 Mopar or a Dana 60 in an AMC (which I thought was a stretch).

Jim Mantle V/SA 6632

Re: stock class rear axle?
 

What I am sure of is lots of Jr. Stockers would have loved to use a P/O rear, but instead, they went through untold grief with Chevy "P" cases and all that junk.
The Pontiac/ Olds setup was common in the M/P and Gas classes.
If the rulebook still says "of the same manufacturer" , NHRA always took that to mean Chevy, one , Pontiac ,two , and different.
Now, if it says something about "corporate" , then you boys may have an argument.
But then again, it seems they have already spoken on this, many years ago.

Re: stock class rear axle?
 

Email from Tech Director 1/29/2020:

You are not allowed to use any rear end housing under your car other than a Chevrolet housing. It can be a 10 bolt, 12 bolt etc., but must be a Chevy housing.

Re: stock class rear axle?
 

There you go, Thank You for the clarification Mr X.......