<VV> Transmissions : Convert 4-speed to 3-Speed w/Overdrive

Sat Oct 31 01:53:15 EDT 2015

Is it possible to change ratios inside a 4-speed transmission to convert it to a 3-Speed, with 1:1 as 3rd, and Overdrive 1+:1 for highway driving?

I'm always trying to find 5th, and it feels like it could do it with ease, but THERE IS NO 5th GEAR!!

Charlie

-----Original Message-----
From: VirtualVairs [mailto:virtualvairs-bounces at corvair.org] On Behalf Of Tom Berg via VirtualVairs
Sent: Friday, October 30, 2015 7:26 PM
To: Jim Becker; VV List
Subject: Re: <VV> Overdrive transmissions

Here's my penny's worth on lower rpm for Corvair engines: I owned a '62 Monza with the 102 and a 4-speed back in the day and found that yes, it had to rev to make decent power and stay happy. For instance, while passing on a two-lane highway I almost always had to downshift to 3rd, then get on the gas to get around the slower car. 
Now I have a '64 Monza with a 110 and, thanks partly to its larger displacement (and maybe a milder cam), its torque curve is much wider. It can be lugged down to 30 mph or less in 4th gear without protesting, and can pass on a two-laner in 4th and makes good power and torque while doing it. 
So my guess is that a 5-speed (or 4th-overdrive) would work well with a 110, and wouldn't hurt it. But not with a 102. 
--Tom in Ohio 

     On Friday, October 30, 2015 3:45 PM, Jim Becker via VirtualVairs <virtualvairs at corvair.org> wrote:

 The same arguments apply to virtually all modifications.

Jim Becker

-----Original Message----- 
From: Eric Lucas via VirtualVairs
Sent: Friday, October 30, 2015 12:53 PM
To: VV List
Subject: Re:  Overdrive transmissions

Smitty,

I agree but it would be really 'cool'.

Eric in Indiana

> To: virtualvairs at corvair.org
> Date: Fri, 30 Oct 2015 13:47:14 -0400
> Subject: <VV> Overdrive transmissions
> From: virtualvairs at corvair.org
>
> Smitty Says;  as I read the posts on the need for overdrive for Corvairs I
.....  So considering the cost and problems to put an
> overdrive in a Corvair I hardly think it is worthwhile.

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