[V8Vairs] Perfect Engine for V-8 Corvair

Wed Nov 3 22:41:24 EDT 2010

Might it be a good idea to over inflate the rear tires a bit in an effort to save the R/P?  I added a couple of extra psi on the day my car was tested and glad I did.  The car came back with its tongue hanging out but the differential stayed together which was really my goal.

Bob, CIDCO, Anderson said the 3.55 is the strongest ratio overall, 3.08 has the weakest pinion gear and the 3.89 has the weakest ring gear. If I recall correctly, Frank pealed the teeth off a 3.89 ring gear.

The whole question of the "perfect" engine is really all about what is the strongest engine that has best chance of being contained by the transaxles we each have and how do we apply power, with abandon or with deliberation.  Rick's "get it moving before nailing it" style is what I always want to do although I'm not always successful.  I've smelled rubber, another feature enjoyed by those who don't have an engine cover, maybe a dozen times or so.

I have always thought that an open diff is better than a posi for our cars.  Getting on wheel spinning must put less strain on the R/P.  (I could also be wrong.)  Currently I have a 3.55, 4 spider, open diff.  

As for the perfect engine for my situation, I'm leaning toward a warmed 302 or a mild 350 but may end up with what's in it now.

The never ending story continues....

Paul

--- On Wed, 11/3/10, Frank F Parker <fparker at umich.edu> wrote:

From: Frank F Parker <fparker at umich.edu>
Subject: Re: [V8Vairs] Perfect Engine for V-8 Corvair
To: "discussion of non-stock engines in Corvairs" <v8vairs at corvair.org>
Date: Wednesday, November 3, 2010, 3:28 PM

> My technique was to get it moving before I "mashed on it" as the truckers say.
> I never had any trouble from the tranny, a 66 model with double close gears or the diff, a CIDCO 3:27 unit. My 350 dyno'ed at 340 HP.
> Rick Norris

That was my experience also. My original Crown in 1970 used a used 
350/350hp small block. Tires are the fuse-they need to spin before the
torque kills the diff. When the 350 got tired, I bought a brand new
302/302 4 bolt long block and redid car. That is when I broke the R/P with
the smaller motor BUT it was me. I did a hard 1/2 slip at mid rpm and with 
the 302, I had not gotton to the point in torque curve where tires would 
spin and all but 1 teeth came off ring gear. I had posi, 4 spider which
survived. Now days adding a shoulder bolted top plate would help.

frank

PS: Future plans may include a new crown using saginaw trans with C5 diff 
and using a brand new 4.3L turbo V6 Typhoon motor gathering dust in shop.
With a new BB turbo, it would spool fast, the slight lag would help 
protect trans. Motor is designed for 15-20 psi boost and my old TY weighed
4200 # and did 13.1 qtr times and made 450+ torque. Imagine in a 2800 # 
vair.

_______________________________________________
V8Vairs mailing list
V8Vairs at corvair.org
http://www.vv.corvair.org/mailman/listinfo/v8vairs
This list sponsored by the Corvair Society of America, http://www.corvair.org/