8 3/4 rear end for Hemi?

[jww426]

Is an 8 3/4 rear with 3:91 gears strong enough for a 472 crate Hemi with and auto trans?
540 bhp. 550 lbs torque.
thanks!
JWW

[c00nhunterjoe]

Depends on traction. My lowly 383 scattered hardened axles in my 8 3/4. Horsepower means nothing until you have the ability to plant it to the pavement.

[charge69]

Every one thinks you need a Dana with the Hemi but, My Charger, and all 1969 Hemi Chargers equipped with the 727 auto, came with the 8 3/4" rear end as standard equipment. Mine has a 3.23 w/sure grip .  I believe any higher rear end package usually came with a Dana whether 4-speed or auto but, I am not positive. There might have been optional higher gears in the 8 3/4" also.

Anyway, what are your plans for the Charger?  I've been told 8 3/4" rear ends are good for over 700hp with an auto and my car has no problems and it is the original gear set. I hammered on it quite a bit in the late '70's but rarely floor the Charger or hard-launch it now. I would, personally, trust an 8 3/4" rear and save the expense of a Dana and the, roughly, 100 lbs. more it would add. However, if you are going to ride it hard, I would probably go ahead and get the Dana.

[Dino]

 

What he said.

[fy469rtse]

What he said he said 
No seriously will survive if prop built, no sure grip, track lock or equivalent ,
I have a stroked 440 with auto, rear housing is braced for limited abuse,