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Ecklers AutoMotive
Username Post: 65 chevy nova 6 cyl to v8 rear end question        (Topic#336489)
TR5GT 
Forum Newbie
Posts: 6

Reg: 06-07-16
06-07-16 06:31 PM - Post#2632730    

I'm purchasing a 65 nova that had an original 6 cylinder. The car has a 90's model crate 350. I'm assuming the 2 speed power glide is fine but was wondering about the original rear end. Should the rear end be fine for some time or will I need to think about a 12 bolt or ford 9in soon? Thank you.



 
Ecklers AutoMotive
raycow 
DECEASED
Posts: 27999
raycow
Loc: San Francisco, CA
Reg: 11-26-02
06-08-16 04:05 AM - Post#2632789    
    In response to TR5GT

You might want to give a little more attention to the PG rather than the rear end. The early 6 cyl Nova automatics with an air cooled converter have nowhere near the power handling capability needed for a 350. So the first thing you need to check is whether or not you have oil cooling lines going to the radiator.

As for the rear, it should be fine with normal street tires. If your idea of tires is foot-wide "meats", then it might be a good idea to start looking for a stronger rear end.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 
56sedandelivery 
Dedicated Member
Posts: 5627
56sedandelivery
Age: 67
Loc: Everett, Wa.
Reg: 02-26-08
06-13-16 01:31 PM - Post#2633704    
    In response to raycow

IF it has a drop out style 3rd member (not sure what year they changed for the Nova/Chevy II), then it has a weaker 3rd member; lighter casting, smaller bearings, smaller axles, and brakes. You can swap in the full sized car 3rd members, and get some aftermarket axles, and that should be fine for a street car. As far as the Powerglide goes, they are very easy to work on, and beef up. Replace the cast iron, high gear hub with a billet steel one, up the clutch count to 5 in direct, delete the cushion steels, add a shift kit, and it'll knock you teeth loose when it shifts. If it's an air cooled unit, it should be fine as long as it still has the shrouded converter, and cooling turbine around it, but it can also be converter to fluid cooled easy enough. I'd replace it with at least a reworked TH350 or a 200R4; Glides are just boring on the street. I know, I've built enough of them. I am Butch/56sedandelivery.




 
raycow 
DECEASED
Posts: 27999
raycow
Loc: San Francisco, CA
Reg: 11-26-02
06-13-16 05:37 PM - Post#2633745    
    In response to 56sedandelivery

Butch, the light duty drop out rear was used in 62-63 only. In 64 Chevy II went to the same 10 bolt 8.2 rear used in Chevelles (different axle housing of course).

Btw, I have one of those early Chevy II center sections in my 60 Bel Air behind a 348 and have never had any problems with it, despite warnings to the contrary. This is probably because I run skinny tires and they break loose very easily. Also, the axle shaft splines are the same as full size, so I was able to keep my stock 60 shafts.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 
TR5GT 
Forum Newbie
Posts: 6

Reg: 06-07-16
06-16-16 04:17 PM - Post#2634365    
    In response to raycow

Thank you, I'll check it. I know the radiator is new aluminum not installed yet.



 
TR5GT 
Forum Newbie
Posts: 6

Reg: 06-07-16
06-16-16 04:19 PM - Post#2634366    
    In response to TR5GT

I appreciate the responses, I've got a lot to learn.



 
Rick_L 
Honored Member
Posts: 27637
Rick_L
Loc: Katy, Tx, USA
Reg: 07-06-00
06-16-16 05:47 PM - Post#2634388    
    In response to TR5GT

With an automatic and a crate 350, your rear axle is probably just fine.

I think Chevy started using a transmission oil cooler by 1965 rather than the air cooling that the early units had, but don't take my word for it.

The air cooled transmissions had big holes in the bellhousing for cooling, and obviously don't have cooler lines.

A transmission with an oil cooler should do fine in your car as far as reliability. But it will drive better with a 3 speed auto, or one with overdrive.



 
Frank_T 
Senior Member
Posts: 330

Loc: PA
Reg: 12-02-02
06-30-16 08:52 PM - Post#2637038    
    In response to Rick_L

1965 came with an 8.2. IF you have 5 lug wheels you have an 8.2. You can also Look under the car from the back and if you see bolts on the rear cover staring back at you thats an 8.2. A smooth housing without bolts is an early rear and as said above, could be trouble. those early rears used 4 lug wheels.
I ran a 350 HP 350 for a few years in my 64 with the 8.2 rear posi w/375s. The saving grace is you cant run big meat out back on the early chevy II so the tires brake lose easily. 235 60 is MAX width with stock wheel wells, with correct back spacing wheel (-4.5).
Modification 1 would be to Loose that air cooled Powerglide and find a short tailshaft (I think they are 6") Turbo 350, thats a fairly easy swap that will increase your reliability 10x.

Ive had a few of these early Chevy IIs and they are super light and fun but a bit of an oddball depending on the year. Weird stuff like the different block castings, angled clutch housings, front sump oil pan, short distributor shaft, tight firewall distributor clearance, small fuel lines, 4 lug wheels, single leaf rear springs, lack of front sway bar, strange power steering, Terrible header options that toast starters... No worries there are solutions for all these issues.

My advice is post your ideas on this board before you dive in. Free guidance and Our expense of doing it wrong before you (and the internet) may save you some pain and cashola.

Good Luck
Frank T



 
TR5GT 
Forum Newbie
Posts: 6

Reg: 06-07-16
07-13-16 09:35 PM - Post#2639654    
    In response to Frank_T

Thanks Frank, I got the low profile oil pan and header kit. I appreciate all the other info. I'm checking out wheel and tire sizes now.




 
Chevy 4 Life 
Frequent Contributor
Posts: 1393

Reg: 03-14-14
09-08-16 08:42 AM - Post#2650124    
    In response to Frank_T





 
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