[V8Vairs] Perfect Engine for V-8 Corvair/ Positraction

[Ken Hand]

If you autocross or road race a lot, yes. For the street, no.

Some of you may remember the "TOY" it wasn't a V-8 car but I did drag race it with an open diff. It seems that both rear tires spun after going through the water. I ran slicks so you could go through the water. On launch it never veered one way or the other with the front in the air telling me that both wheels were driving the same.


Ken Hand
248-613-8586
www.corvairmechanic.com



-----Original Message-----
From: Thomas,Robert R Civ USAF AFMC 76 PMXG/OBPE <Robert.Thomas at tinker.af.mil>
To: discussion of non-stock engines in Corvairs <v8vairs at corvair.org>
Sent: Thu, Nov 4, 2010 8:44 am
Subject: Re: [V8Vairs] Perfect Engine for V-8 Corvair/ Positraction


I drag raced my first 68 Corvair 500 for a couple of years. It had a
ildly built 140,  '66 4-speed with Kelly Springfield B50-13 tires on
3x7 steel wheels. It had an open differential, probably with 3.55
ears. I launched by revving the engine to an indicated 6000 rpm and
apidly releasing the clutch. I shifted hard and the tires spun in 1st,
nd and 3rd. I never had a problem with one legged wheel spin. I also
utocrossed this car and had no trouble zinging the back end around in
ight corners (boy, did the workers run away!).
So, I believe the open differential is stronger than the posi unit. Is a
osi rear end of any benefit in a V-8 car that's used in autocrossing
nd maybe vintage road racing?

Bob Thomas 68 Monza
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