Timing chain? on a 235?
GMC's came from the factory with aluminum timing gears and they are
interchangeable with the fiber Chevy gears, but as a set only, or the timing
marks will not line up correctly. An inexpensive upgrade if you happen to
have access to a salvage Jimmy engine.
Jack / Winter Park FL
----- Original Message -----
From: <miq@teleport.com>
To: <MRAHL@martinmartin.com>
Cc: <Hudson29@aol.com>; <oletrucks@autox.team.net>
Sent: Wednesday, July 21, 1999 9:13 PM
Subject: Re: [oletrucks] 235 Timing Gear and Cam
> MIKE RAHL says:
> >
> > Paul,
> >
> > 1. Sure, you can replace the timing gear w/o replacing the crank gear,
> > unless it is worn also, which is not likely since the fiber cam gear is
much
> > softer. I have done it.
> >
> > 2. Aluminum gear will be a bit noisier, but last much longer. I have
done
> > it.
> >
> > 3. The stock cam will give you the best low end torque. With a little
> > hotter cam you will probably sacrifice a little bit of low end torque
for a
> > decent increase in power above about 2500 rpm or so. The 235 in my 56
3200
> > (stock intake/exhaust/carb)has a cam similiar to the Blue Flame cam
which
> > came in the early Corvettes and I can't say as I noticed much difference
in
> > the low end, but it does do better at higher rpm's. With the 55 235 I
am
> > building I am going with a Clifford 256 cam as I will be using a
Clifford
> > water-jacketed intake, Carter 4 barrel from a 54 Buick, and Fenton
Headers.
>
> I have a very similar setup in my '57. The cam has a longer duration and
> not as much lift when compared to the C256 in my truck, but other than
> using Weber carbs I have the same intake/exhaust. Very nice power at mid
> to high range, and even down at 1000 rpm I can chirp tires in a turn with
> the lsd rear end.
>
> There are a couple speed shops out there that make a complete timing set
> with no chains at all, just 3 gears in a custom bracket to hold them a the
> right location. I've seen it for v8 application, and for old british car
> engines, I wonder if a similar item exists for the 235 or even the 230-270
> flavor?
>
> Didn't see anything on stovebolt's pages.
>
>
>
> --
> __
> Miq Millman miq@teleport.com
> Tualatin, OR
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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