<VV> 1973 Ultra Van #604 For Sale in AZ

jvhroberts at aol.com jvhroberts at aol.com
Wed Jun 12 12:05:23 EDT 2013

 Here's a list of GM transmissions.



John Roberts


-----Original Message-----
From: Joel McGregor <joel at joelsplace.com>
To: virtualvairs <virtualvairs at corvair.org>
Sent: Wed, Jun 12, 2013 11:53 am
Subject: Re: <VV> 1973 Ultra Van #604 For Sale in AZ

The 700 has nothing in common with the 400 and is much lighter duty.  I couldn't 
count the number of hard parts I've replaced in 700s vs very few in 400s except 
the center support.  The 700 doesn't even have a center support.

The 200-4R is basically the old metric 200 with an overdrive grafted on.  The 
200-4R had a very short production span and was quickly replaced with the 700R4.  
Remember how unreliable the old metric 200 was?

Joel McGregor
From: Sethracer at aol.com [Sethracer at aol.com]
Subject: Re: <VV> 1973 Ultra Van #604 For Sale in AZ

Joel - The 700 is just a Turbo 400 on Steroids. Those were used in big trucks as 
well. But they are really heavy. The 200 was used behind Turbo V6s, I'm pretty 
sure it is strong enough. The Vortec was a pretty capable motor, but I can't 
help wondering why not a mid-size V8 for the torque needed to pull hills, etc. I 
would also like to see the heat path for cooling the powertrain in this coach. 
Hmmmm.  Like you, I have never seen a "Bore Tech"!!  - Seth

In a message dated 6/12/2013 8:08:39 A.M. Pacific Daylight Time, 
joel at joelsplace.com writes:
700s didn't come out until '82, 200-4R '81, 305 '76, 4.3 Vortec '85 or '87 .  
I'm pretty sure a Bore Tech is more rare than the coach.  700s have a much 
stronger (still not very strong) and have a lower first gear 3.059 vs 2.74:1

Joel McGregor
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