<VV> Crankshaft (not camshaft) Gear Question

[BobHelt at aol.com]

hi Steve,
i am providing some short answers below, but at the risk of being jumped on  
and ostracized I must comment that you should get some books on Corvairs and  
read up on them. For example, my book, THE CLASSIC CORVAIR, goes ointo  
considerable explanationon these subjects with photos and examples for you to  see 
the whole story.
Regards,
Bob Helt
 
 
In a message dated 9/8/2007 10:37:57 AM US Mountain Standard Time,  
schwasd at verizon.net writes:

I bought  a used one when the engine was rebuilt 5 years ago (new ones were 
"out of  stock" at the time)...and was not aware of the difference.  Perhaps 
it's  not even the right one for a 1965 140 for all I know...1960-63 are 
different  from 1964-69 (?).

So my question is, what can I expect from installing  a gear intended for an 
140 automatic on a 140 engine with a 4-speed  transmission?  Power- and 
performance-wise?  
Imroved torque up to 4000 rpm but at higher speeds, less torque. A torque  
curve is in my book.
 

How  about one intended for a '60-'63 (possible?)?
 

No  advantage here. This one positions the crank seal correctly for EMs.

Is  there a way of telling via visual inspection that I have the wrong gear 
for  this engine/tranny combination?
 
Yes, see photos in my book or also in the Tech guide. You really need the  
photos to see the differences.



If I need to change to the correct crankshaft gear the engine  will have to 
face a complete teardown...is that correct?
 
Yes. Plus a machine shop with a 30+ ton press.



Thanks,

Steve
140 VAIR






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