HEMI Quick change

Are these a good rear end for a Rod /
its a HEMI quick change sprint car rear end
dont know much about them , but the price seems good form the lot shown .

 

What makes it a HEMI? And can you make the pics a little smaller for us please?

 

HEMI used 12-bolt GM ring/pinon gears as opposed to Ford style gears traditionally used by Halibrand, Winters, et.al. Other than that they used the same 'change-gears' as the others. The main problem (as far as Sprint/Champ car applications) was weight: they were appreciably heavier than traditional Halibrand/Winters Q-C's. They were fairly recent(late '80's- early '90's ?) so bearings & gears should be readily available, & they are certainly strong enough. If you have a 'stock car/modified' unit with a differental & axle housings you're in good shape: if you've got a solid axle(open wheel) unit you've got some searching /fabrication/conversion chores ahead. I see in your picture that you have an 'open-wheel' version: you'll need to adapt/fabricate axle housings( possibly use a 12-bolt rear axle for donor parts?) & add a differential for the street. Sounds like a great "Tech/Build Thread" waiting to be written:Keep us posted!!

 

So this QC uses modern R&P where the pinion comes in below (above?) centerline? How's that work and still line up using the same C/C distance change gears as a Halibrand?

 

Yep, they're huge especially in the 'Champ' size but they also made a rare but smaller 'V8' size....

 

Using some imagination, rotate the rear end 180* and Imagine the yoke coming out the rear cover but towards the front now. Now rotate back and raise or lower shaft till (on draft drawings) centerline of both pinion and lower shaft is X.** demension. and then draw the outer case.

 

The one in the picture is a live axle setup. That could be an interesting build in a rod, but really not drivable. But if you are thinking a normal housing / axle arrangement, I'm not sure the cost / effort works out.

 

I have one under my roadster. You will never break it.
People that say an open axle won't work under a street roadster have never done it.
It's not for wimpy drivers though.
If you wrap the axle with white tape, barber pole style, it drives people nuts that are following you.

 

So the main-shaft is higher than a Halibrand. Is there room for a differential, or is this a spool-only deal?

I guess if you are using an open axle it's solid and you've got nothing to worry about (expect for the tire screeching around corners).

 

Spool only

 

FANT -

While the open axle ***embly CAN be made to work, it's a lot of work to make it work. The center part of the ***embly, sure, plenty heavy duty enough for most tasks.
But as noted, you'll spend every bit of your money saved on this used ***embly making it work.

Best thing to do, is to find out how much closed axle tubes and axles are for that ***embly.

And then you still need brakes...!

Mike

 

This is better shot of the unit
it is HEMI branded unit

Thanks for the information guys !!
this stuff is on CL along with 26 T body parts .

 

There is one in the cl***ifieds for sale....By Me

 

I have one also... looking to sell it.