How Far Can I push my stock Gn Rear?

[87GnWon]

Just wondering what 60fts and hp everyone is putting through the stock rear end? Thanks

 

[Carr]

well the internals of your rear should hold up to 400hp depending on how sticky your tires are. but your housing is strong enough to run high 8's. I had a full upgrade on my rear suspension but I kept the housing, because its a very strong housing. just haven't had time to take it to the track yet.

 

[87GnWon]

Well I guess it's time to upgrade yesterday my car put 470 to the wheels

So how can I tell if this is the original Gn rear end?

 

[Carr]

if it has an 8.5 rear in it.
what I did for upgrade goes as follows, which is a nice setup
moser true posi, 30'' splice, c clip eliminators rear end cover
hr parts and stuff pro race kit
baer brakes

here's a link after i the car was done from the shop.

YouTube - MY Grand National with new rear end and rear brakes

 

[87GnWon]

Beautiful setup

 

[UNGN]

If you get into the 1.5's for 60 fts, the clock starts when you will break a stock axle. Not if, but when.

Upgrade to forged axles before this point.

 

["Turbo-T"]

How long can them c clips last until something breaks?

 

[TorqueJunkie]

there are people pulling 1.6x-1.5x sixties on stock rears around here.

 

[craggar]

How long can them c clips last until something breaks?

The c clips only hold the axles in nothing else. The problem with that style axle is when an axle breaks there is nothing holding the rest of the axle in.

I agree with UNGN that you're looking for trouble when you are getting down in the 1.5's.

 

[Boost231]

if your running 1.60's or faster its time to upgrade. It cost me more then a rearend upgrade to fix the paint and body from a broken axle that wanted to go down the track further then the car wanted to go.

 

[Grumpy]

I'd just do a set of axles for now.. then a cover.. then c clips .. then when ya save more $$$$ ................:biggrin: