Thanks Ron, I am not familiar with that rear end but will look for it. It
sounds like a one day swap. Do you know if i would need to change the length of
the driveshaft? By the way I am running 16in tires. Thanks to everyone for the
info!

----------
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------Original Message------
From: sid works <sid99_ca@...>
To: <6066_Chevy_Truck@yahoogroups.com>
Date: Mon, Jun 29, 2009 01:29 PM
Subject: Re: [6066 Chevy Truck] something new?


I would just get a 14 bolt corp rear axle from a 73-87 chev or gmc( 3/4-1t) and
go to little higher ratio(lower numerically).you will have to move the spring
pads on the axle housing about 1 1/2" on each sidee to accommadate the springs.
not difficult (I bought mine about 16-17 years ago and it cost me $125.00 then).
a 3:73 would be fine for that application depending on what size tire that you
are running on the rear.
you are still going to have that lower 1st gear which is needed to lift with a
load and the 283 in those capacities needs gearing to be efficient to use,
otherwise you will need more displacement.
ron

--- On Mon, 6/29/09, Devon Heron <devonh@...> wrote:

> From: Devon Heron <devonh@...>
> Subject: Re: [6066 Chevy Truck] something new?
> To: 6066_Chevy_Truck@yahoogroups.com
> Received: Monday, June 29, 2009, 7:31 PM
> I've got a 65 C30, and it had the
> 4speed with 5.13 gears in the rear-end... ran great with my
> rebuilt 292, but I was speed limited
> and spinning the 292 that fast was really loud...
>
> I put in the 700R4 and a new Dayna70 rear end (from a ford)
> with
> 3.73 gears. http://employees.org/~devo/65chevy/index.html for all
> the details...
>
> If I were to do it again, I would have kept the 4speed
> manual and
> done just the rear-end swap...
>
> The 700R4 is really nice, and it's really quiet on the
> freeway,
> but do I really need to drive 90mph in this beast? (ok I
> think
> I've only gone about 85 or so... but that's still faster
> than necessary, and the motor isn't even spinning very fast
> at that
> speed) 
>
> GearVendors would be a really nice way to go, but probably
> more expensive than a rear-end swap.  I didn't find
> any
> info on a gear-swap in the existing rear-end, but that
> would
> be a good option too!  My route was too expensive....
> lesson
> learned.
> -Devon
>
>
> --- In 6066_Chevy_Truck@yahoogroups.com,
> "Matt Bishop" <matttheelder@...> wrote:
> >
> > Here is something new to argue about.  I have a
> 66 c30 dually that i would like to take on the
> highway.  Its just a farm truck but it is the only old
> truck i get right now.  It has a 283 with a 4
> speed.  It is all original with 53,000mi on it.  I
> know I could swap the rear and trans but without the money
> or time it is not going to happen.  Are there any other
> options?  Pinion gears?  What to switch them
> to?  Overdrive ad on like from gearvenders? 
> Anyone done this, are you happy with it?  Anyother
> options?  It runs great and is in great shape. 
> When I bought it last year i got 14mpg all the way home
> before a complete tuneup.  Let me know your
> thoughts.  Thanks.  By the way, when we fight we
> are no better than ford people, just kidding.
> >
>
>
>
> ------------------------------------
>
>
> Message Archive for this Group:
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>
> Yahoo! Groups Links
>
>
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>
>
>


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