Tom,
First thing, you should try and back the idle down. If you have a manual
tranny you should be idling somewhere around 550-600 RPM (unless the cam is
radical enough that it won't allow that). If you have an automatic tranny,
when you put it in Drive, the RPMs should drop 300 or 400 RPM's to
somewhere around 500-600 RPM (in Park, your RPM's will be 800-900
RPM).(These are ball-park figures YVMV). Next, check your timing. Was it
missing or was it running rough? Do you have the owners manual for the
carb? There is a description in there on how to lean it out, it sounds
like it is running really rich. If you don't have the manual, you should
be able to access it on Edlebrocks web-site (they have a lot of stuff up
there). Also, what model carb is it? Is it a Performer series, or one of
the Q-jet replacements? Also, is the carb base sealing against the
manifold? A vacuum leak will mess you up too. Good luck with it. If it is
a Performer series, E-mail me and I can scan in the section on tuning, or
call me and I can try and talk you through it.
Kevin Lake 56 napco/burb GMC
----------
> From: Tom Burt <tburt@hirose.com>
> To: 'oletrucks' <oletrucks@autox.team.net>
> Subject: [oletrucks] Sick 327
> Date: Thursday, March 04, 1999 3:45 PM
>
> Okay, okay! I've tuned up V8s before and never any had problems. I just
> never handled high performance engines.
> My '57 has a late 60's 327 that I had replaced coil, points, cap, rotor,
> and added a complete set of Accel high performance ignition wires. Plugs
> look okay and didn't need replacement.
> It starts on first pop, almost like it has electronic ignition and idles
> quite well. But, when I take it out on the road, it misses badly...dang!
> I am a little frustrated with this one.
> Q: Got any ideas?
>
> Note: It has a Edelbrock 4bbl and idles about 1100 RPM and there is
> commonly the smell of raw gas after shutting it down. When running idle
> the exhaust fumes are quite rich (wife gets angry..says it chokes out the
> entire neighborhood). It's set up with a Edelbrock hi-rise and headers,
so
> there's no flow restriction there. The mis-firing is not consistent and
is
> at times random.
> Q: Could the fuel mixture be too rich and occasionally (maybe randomly)
> fouling the plugs while on the fly?
>
> Tom B. 57 Stepside 3200
>
>
>
> 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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