Aubrey's 62 409 goes 11.067 in C/S

[Mark Yacavone]

Originally Posted by treessavoy

Aubrey,

Back in the day I seem to remember the chevy guy's putting the Olds or Pontiac rear ends in their cars.....don't know if this is a viable option anymore, I'm sure no one makes the gears and parts.

My tri-power '58 Pontiac has one beefy rearend in it!

Jim

You can't put an early Olds / Pontiac in a Chevy in Stock. Not a corporate rear.

[bill dedman]

Thanks for all the good info, guys.

Mark,
I don't know what NHRA's definition of a "corporate rear end" would be, but I'll bet you're 100-percent correct.

Bill

[X-TECH MAN]

Originally Posted by Mark Yacavone

You can't put an early Olds / Pontiac in a Chevy in Stock. Not a corporate rear.

Its legal in IHRA. GM corporate rear means Olds/Pontiac/Chevrolet/Buick. It has to be a passenger car rear. Not a truck rear such as a Dana 60.

[Jeff Lee]

I'm surprised at how many class racers don't seem to understand what "corporate" means!

[Mark Yacavone]

"Original rear end may be replaced with another of the same type from the automobile manufacturer"
Would the manufacturer be Chevrolet or the parent company ,GM?
I guess it depends on who's reading the rulebook.
That rear end was never used in a Chevrolet.

Relax, Jeff. I'm not attacking the use of a Dana 60 in an AMC. That rear was used in Plymouths and Dodges as a replacement. I would say that's a corporate component.

[X-TECH MAN]

Originally Posted by Mark Yacavone

"Original rear end may be replaced with another of the same type from the automobile manufacturer"
Would the manufacturer be Chevrolet or the parent company ,GM?
I guess it depends on who's reading the rulebook.
That rear end was never used in a Chevrolet.

Relax, Jeff. I'm not attacking the use of a Dana 60 in an AMC. That rear was used in Plymouths and Dodges as a replacement. I would say that's a corporate component.

There were some heavy duty GM trucks that used a Dana rear but the key word is "TRUCK" so the Dana would not be legal in a GM product stock eliminator car. Its legal in Mopar because of so manay PASSENGER cars from Plymouth/Dodge came with the Dana 60. AMC is considered part of Mopar now so the Dana and the 8 3/4 is deemed legal. I always felt that any passenger car rear should be allowed for strength no matter the brand of car like in Super Stock. I dont think the rear end makes enough HP to push the car down the track any quicker but the rules are what they are.

[Mark Yacavone]

Originally Posted by X-TECH MAN

There were some heavy duty GM trucks that used a Dana rear but the key word is "TRUCK" so the Dana would not be legal in a GM product stock eliminator car. Its legal in Mopar because of so manay PASSENGER cars from Plymouth/Dodge came with the Dana 60. AMC is considered part of Mopar now so the Dana and the 8 3/4 is deemed legal. I always felt that any passenger car rear should be allowed for strength no matter the brand of car like in Super Stock. I dont think the rear end makes enough HP to push the car down the track any quicker but the rules are what they are.

Right..and the 68-70 Olds Oshawa plant put the Chevelle 12 bolts in the 442's. The 1970 GTO 455's had Chevelle 12 bolts in them.


With a little Clintonesque spin on it, It depends on what the meaning of "manufacturer " is...