[V8Vairs] Perfect Engine for V-8 Corvair

GnKHOFFMAN at aol.com GnKHOFFMAN at aol.com
Wed Nov 3 23:35:14 EDT 2010


 
Interesting thread.......   I have wondered about the spinning  tires 
thing; if they are good and wide tires, if there is hop, wouldn't there be  
loading and unloading?  Which I always thought would be a bad thing  (similar 
issue if speed shifting)?  I had assumed (maybe wrongly) that the  skinner, 
less sticky older tires were one of the secrets to trannys and  differentials 
living.
 
Anyway, I will soon have a 390 hp/380 ft-lbs torque (or there abouts) 327  
to put in my car.  I will run a 3.55 posi.  It will be used for  vintage 
racing (no clutch dumping, no speed shifting).  The sweet spot for  the cam 
(EX284H comp cam) is from 2500 to 6800 rpms.  
 
The old engine was a tired 327, (no idea how many years/miles on it) but  
the 3.27 open differential then used held together (bot the 3.27 and the 3.55 
 have the 2 extra spider gears).
 
Gary Hoffman
 
In a message dated 11/3/2010 7:42:38 PM Pacific Daylight Time,  
paulsiano at yahoo.com writes:








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


 


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