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Username Post: 63 Nova Rear End ID?        (Topic#138383)
Jimmy71Nova 
Senior Member
Posts: 449

Loc: Big Spring, TX
Reg: 04-17-04
08-18-06 07:16 AM - Post#987400    

Loked under it today, and if it's not a for 9", I don't know what it is. It has no differential cover in the back, just straight welded on, but it has a drain plug in the back, just not 10 bolts on it. I haven't seen anything like it on a GM before, just wondering if anyone has any clues for me. Thanks.

 
Banjo 
Senior Member
Posts: 164

Reg: 04-17-03
Re: 63 Nova Rear End ID?
08-18-06 08:18 AM - Post#987401    
    In response to Jimmy71Nova

Stock 8.2 for 62, 63, and maybe few early 64 had different type rear than later (though same width). also were 4 lug. 64 was the big changover year with 5 lug coming into play and removable rear cover with 10 bolts holding it on. Your front spindle match at 4 lug also and stock would have probably been 13 inch rims. Banjo.

 
Jimmy71Nova 
Senior Member
Posts: 449

Loc: Big Spring, TX
Reg: 04-17-04
Re: 63 Nova Rear End ID?
08-18-06 12:09 PM - Post#987402    
    In response to Banjo

Wasnt the back of the pumpkin though held on with a differential cover and 10 bolts regardless?

 
babydeuce 
Senior Member
Posts: 551

Loc: Wichita Falls, TX
Reg: 05-27-00
Re: 63 Nova Rear End ID?
08-18-06 05:50 PM - Post#987403    
    In response to Jimmy71Nova

Just like a ford 9", it has a solid housing with a drop out third member. It is stock for your car. It should have an 8.2 ring gear, but you cant put a whole lot of power to them, they snap the axles.

Jack
63 Chevy II SS, 283 .040 over w/vortec heads, edelbrock vortec rpm intake, comp cams XE256, and nothing else worth talking about!


 
enigma57 
Senior Member
Posts: 9744
enigma57
Age: 66
Loc: Texas
Reg: 10-28-00
Re: 63 Nova Rear End ID?
08-18-06 06:52 PM - Post#987404    
    In response to Jimmy71Nova

Jimmy, the 8.2" 1962 and 1963 Chevy II rear ends have a drop-out 3rd member and no removable rear inspection cover. The 3rd member is the same as used in '55 - '64 full sized Chevy cars and will interchange. And the axle shafts are held in with retainer plates at the outer ends of the housing, as are axles in '55 - '64 Chevy full sized cars. The 1963 Chevy II's had 4-lug wheels and smaller 9" diameter drum brakes, however.

If you desire 5-lug wheels, the 4-lug axle shafts can be pulled and the outer flanges and rear brake drums redrilled by a machine shop. Same with the 4-lug front hubs and brake drums. And if you want to replace the 9" diameter 4-lug rear drums with 11" diameter full size car drums, have the 4-lug axle flanges re-drilled for the 5-lug pattern and replace the backing plates, drums, shoes, wheel cylinders and brake hardware with parts for a '55 - '64 Chevy full sized car.

There were upgrades developed for the early Chevy rear end such as yours to allow them to live behind the hotter 409 engines in full sized Chevy cars at the drag strip. There is a company up in Canada that has these available as I recall. It involves adapting steel billet caps, stronger Dana 44 spider gears and custom built 30-spline axle shafts, I believe. Not cheap though, and you still have the small diameter pinion, so that would be the weak link if you were really showering down on it in a drag car with good traction and power shifting a stick shift tranny behind a really powerful engine.

The early 8.2" 10-bolt rear ends (with removable rear inspection cover) that came into use later have the same 1.438" pinion shaft diameter and 8.2" ring gear diameter as does your '63, so they are no stronger. And the 10-bolt units have no drop out 3rd member (harder to work on) and use C-clips to retain the rear axles (a disadvantage to my way of thinking). The 10-bolt rears have 9-1/2" diameter drum brakes.

If you want to build something stronger without going to a 9" Ford rear or spending huge bucks, you can pick up a late model 8.5" GM rear with removable rear inspection cover. These utilize a larger 1.626" diameter pinion and later units built from the early '90's onward have 30-spline axles (same size pinion and axle shaft diameters as 12-bolt GM, but slightly smaller diameter ring gear than the 12-bolt rear). You could pick up one out of a late '90's Suburban in good shape, for example. Many of these had posi units and some had the optional 3.42 or 3.73 gearing as well. The axle tubes can be shortened to narrow the rear end to fit your car and the large diameter bearing Ford 9" housing ends welded on. Then 30-spline custom axle shafts can be ordered having large Ford wheel bearings on the outer ends and any wheel mounting bolt pattern that you want. That would allow you to utilize larger rear drum or disc brakes and would do away with the C-clips for greater safety as well. Spring perches can then be welded on to fit the narrowed rear end to your Chevy II and set the pinion angle correctly.

Hope this helps,

Harry

 
enigma57 
Senior Member
Posts: 9744
enigma57
Age: 66
Loc: Texas
Reg: 10-28-00
Re: 63 Nova Rear End ID?
08-18-06 07:17 PM - Post#987405    
    In response to babydeuce

Jack, I'm glad you posted here. I have been looking for a particular alternator bracket and was hoping that you could help me locate the company that makes them. I tried contacting you over on Steve's Nova forum, but I am new there and may not have posted correctly. I'll send you a PM here on Chevy Talk, as this is off topic from Jimmy's thread.

Best regards,

Harry

 
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