Stephen,
I think either one would be OK, but the 600 will probably have to be
re-jetted. The 500 and 600 models are priced about the same if you add the
electric choke, which comes standard on the 600. I would call Edelbrock tech
line for their recommendation.
The Fentons should present no problem on either of your trucks, but you
might have to do some minor grinding on intake runners and/or header to
allow them to work together. If you have a spare head, you should try to get
all this worked out on the bench, it will be a lot easier than doing it in
the vehicle. Also, the 4-barrel intake might interfere with the shifter
arms. It will be real close. Finally, the fender brace rod might have to be
bent to clear the carb. Use heat on this rod before bending, or it will
snap.
A couple of other observations, FWIW - Clifford makes a one-piece
intake/exhaust gasket that makes it easier to hang the manifolds and helps
to prevent leaks. Use port alignment rings and some Permatex Hi-temp sealer.
If mounting flanges on intake and headers are different thickness, have the
thicker one milled down to same thickness. Use studs instead of bolts on the
outboard exhaust ports, it makes it much easier to position the headers. If
you can find aircraft jam nuts for these studs, they will allow more
clearance at the rear, in the firewall cutout. That's a tight area.
If you are buying the Clifford and Fenton stuff from Stovebolt Engine
Co, ask Mr. Langdon about possible interference and fitting problems, he may
be able to pre-fit the pieces and eliminate problem areas before shipping to
you. I also recommend using Stovebolt's billet exhaust clamp set. You can
use the stock "bow-tie" clamps, or the smaller ones from a 230/250 six, but
they will probably have to be ground down or cut to fit. Then they rust
unless painted.
Sound like a lot o' work, but it's worth it for "That Sound"!
Jack / Winter Park FL
----- Original Message -----
From: "Stephen" <slb1@humboldt1.com>
To: "Jack Halton" <safesix@earthlink.net>; <oletrucks-digest@autox.team.net>
Sent: Thursday, December 30, 1999 12:04 AM
Subject: Re: [oletrucks] 235ci and 4BB Experiences
> Hi Jack,
>
> Would you recommend the 500 CFM Edelbrock for a balanced 261? I am
getting
> ready to add a Clifford heated intake, as well.
>
> I also will add headers. Can the Fenton cast iron be used with a 3-speed
> column shift? This engine is in a '58 Fleetside now but I look to move it
> to my '50 Suburban. Will the Fentons work in both vehicles?
>
> Thanks,
>
> Stephen
>
> > The Clifford heated intake and Edelbrock 600 are what I use on my GMC
302.
> > It's a good combination. The 500 CFM Edelbrock would probably be a
better
> > choice for a 235, but the 600 can be jetted down to work OK. The
> > documentation that comes with the carb is very good, showing how to go
> rich
> > or lean in various stages. The Edlebrock tech line is excellent as well.
> Be
> > sure to mount the carb with primaries outboard, or fuel distribution
will
> be
> > uneven. This complicates linkage somewhat, but a Lokar cable connected
to
> a
> > bell crank will solve that.
> >
> >
> > Re your choice of Clifford headers - IMHO for street applications,
> > especially daily driving, cast iron headers are superior to tube
headers,
> as
> > they run cooler, quieter, and last forever. Despite some reported
quality
> > problems with Fentons of late, that's what I'd use. Or check Night
> Prowlers
> > catalog, they have some very nicely done split manifolds and econo steel
> > headers for 235's. They aren't on the web yet, that I know of. They are
> > located in Lamar, Missouri (417) 682-3685.
> >
> > Jack / Winter Park FL
>
>
>
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