Rear End Type - 74 Iroc Camaro

[mgd1790]

Hi,

What kind of rear end did they use for 74 IROC Camaros? They reference J56 brakes all the way around...on a 10-bolt or something?

Thanks for any insight.

https://www.motortrend.com/features...ilt-by-roger-penske-and-mark-donohue-in-1974/

 

[Gary S]

Production cars had the corporate 10 bolt rear. If you find an IROC Camaro that was used in racing, who knows what rear ends or other parts went into them.

J56 brakes were not an option on 1974 Camaros. There is some information here about them and what they might be.

what is diference between jl8 and j56

www.camaros.net

 

[mgd1790]

Here's a pic from the 75 IROC that LMC did.

 

[mgd1790]

Production cars had the corporate 10 bolt rear. If you find an IROC Camaro that was used in racing, who knows what rear ends or other parts went into them.

J56 brakes were not an option on 1974 Camaros. There is some information here about them and what they might be.

what is diference between jl8 and j56

www.camaros.net

Thanks Gary. This is for the IROC cars only.

 

[berg2695]

An old HOT ROD magazine article I have says that the original IROC Camaros used ford rearends with full floating axles. Corvette brakes were used front and rear. Also, the article says that the front spindles were replaced with Corvette uprights. Hope this helps. Cool project!

 

[mgd1790]

Saw that too.

That these cars were equipped with Ford rearends was because they were the only ones Holman & Moody could supply with full-floating axles.

 

[mgd1790]

What year and month of hot rod is that?

 

[FS87LT]

As I recall, all NASCAR cars had to have the full-floater rear axles, which was also what 1-ton trucks had under them. In this case, it probably was the Ford 9" as H&M were involved. They probably adapted their normal NASCAR rear axle assy, but probably with a different width?

FS87LT

 

[flowjoe]

As I recall, all NASCAR cars had to have the full-floater rear axles, which was also what 1-ton trucks had under them. In this case, it probably was the Ford 9" as H&M were involved. They probably adapted their normal NASCAR rear axle assy, but probably with a different width?

FS87LT

Most 1 tons, back in the day, would have received a Dana 60. I’m not sure Ford ever installed a 9” in a 1 ton anything.

 

[Brian Hall]

If anyone is interested I have an old Whale Tail deck lid hanging around outback, reasonable to see it go to a good home.