[V8Vairs] 4.56:1 diff explained

[paulsiano@aol.com]

Honestly I think he likes it too.  In the 70s he built a Fiberfab Valkyrie which I think is a
V-8 with a Corvair trans-axle.  Maybe others who are familiar with it can say for sure.  He wrote an article, his first, for Car & Driver a year after I began my Crown conversion.  He is going to send a copy of that article.
 
The second test I view with some trepidation.  He drove the car nearly to its limits the first time and now he wants to take it another 1,000 + rpms on Sunday.  The block is aluminum and was cast in 1959.  I've been told the block is worth more than the rest of the car.  It should probably be in the Corvette Museum some other place like it.  I talked to them about it and they would be happy for me to donate it but they can't afford to buy it and I can't afford to give it to them.  They did talk about the possibility of getting a production engine and making a trade but I was unsure about doing so.  That conversation took place years ago.  Currently I'm seriously thinking about installing an aluminum Chevy 350.  Theoretically the block would be sold to a good home and I would come out ahead financially. If Don puts a rod through it on Sunday, its a new ball game.  I do think the 283 is a nice match for the trans-axle...not too much torque and
 strong enough for me at this stage of life.
 
Paul                               http://www.youtube.com/watch?v=qPgI3FV-jqo 
 
 
 
 

--- On Mon, 9/27/10, GnKHOFFMAN at aol.com <GnKHOFFMAN at aol.com> wrote:


From: GnKHOFFMAN at aol.com <GnKHOFFMAN at aol.com>
Subject: Re: [V8Vairs] 4.56:1 diff explained
To: v8vairs at corvair.org
Date: Monday, September 27, 2010, 10:01 PM



Wow, a double test drive.  I think he really likes the V8 Vairs (of  course 
all of us come up with multiple reasons for driving them as much as  
possible).

Paul, is your 283 the aluminum block car?  If so, I would keep it  as is; 
it is totally unique (of course all our cars are built to different  
purposes).

Let us know how the second test goes.

Gary

In a message dated 9/27/2010 1:13:50 PM Pacific Daylight Time,  
paulsiano at yahoo.com writes:

The tach  I installed for the CPG testing was set to read a six cylinder 
engine.   Totally my error.  Move the slide switch on the back of the tach to 
"8"  and voilla!...my diff is back to a 3.55.

Frank " the professor"  Parker was thinking about what might be going on 
with the car in the middle of  the night, did the math in his head and emailed 
the correct problem and  solution. Frank came over with the right equipment 
to verify the  tach's accuracy across the range. It is now right on the 
money.   Thank you once again Frank.

I now think the Corsa tach, if I  can get it to work properly, will be just 
fine.  6K is plenty for  me. 

Don's deadline for the article is  today.  He is off to Paris for the auto 
show tomorrow and will be  back Saturday.  He wants to retest the car on 
Sunday.  During  the first test he shifted at the indicated 7.5K redline which 
in reality  was about 6K.  He wants to retest at an actual 7 or 7.5K.  6K in 
the  car without an engine cover sounds like 10k. The numbers should  
improve. My only hope is the whole thing stays  together.

I also want to thank all who took the time to  respond.  I am truly one who 
is "getting by with a llttle help from from  my  friends."

Paul







_______________________________________________
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/