Without knowing what size carb, choke or no choke, and which manifold, it is
hard to tell you what the problem could be. What I can tell you is that
Edelbrock and Holley carbs are both set up from the factory with a general
tune. This mean the carb may or may not need to be set up properly for your
particular engine. In general, the Edelbrock carbs run too rich with the
factory set up. Normally they will require a metering rod change, and maybe
a jet change as well. You also don't specify the cam specs. When you say
"street cam" that really doesn't tell anyone the specifics of your cam. The
manifold cam also be a factor. Is it single or dual plane? Does it have the
heat crossover to warm the engine properly?

The last thing is, I like some of the features of the Avenger truck carbs,
but a 300 cubic inch engine doesn't need a 670CFM carb. If they make a
smaller version now, it would be cool, but again, you're probably going to
have to do some jet and power valve changes to get the engine running the
way it should. Remember, they call these carbs universal for a reason.

Chris

"Skyjacker" <u26190@uwe> wrote in message news:65d820af401df@uwe...
> My '79 CJ-5 304 seems to have fuel related problems. It is difficult to
> start when the engine is cold; it turns over fine, but takes too long for
> the
> engine to start. Once running, it emits gassy fumes out of the exhaust
> side-
> pipes that make your clothes smell like gasoline while the top is off.
>
> I had a carb specialist try to adjust the carb, but it didn't help. The
> carb
> is an Edelbrock 4-barrel mounted on an Edelbrock hi-rise manifold. The
> motor
> has a street cam and headers.
>
> I was told that Edelbrock carbs do not work well with 304's, and to get a
> Holley Avenger truck carb with an electric choke. Before I drop the cash
> on a
> Holley, I would appreciate some advise to this problem.
>