The edelbrock does have a jet, it's the thing you're adjusting when you spin it around from the top. That needle comes out and can be replaced with larger/smaller sizes. When you buy the edelbrock they send you a couple sizes of that needle.
I guess I disagree with the cam not changing jetting, at least a jump from a stage 1 to a stage 3. If you don't have to change the jetting then you're not flowing any more fuel, which would be contradictory to the whole point of putting the cam in anyway. I would agree that if you are already jetted pretty close but on the fat side you can throw in another cam and not experience any indications of a lean condition. But if it were me I'd be looking at bumping my mains if I were running stock carbs. Then again, I'm not an expert on jetting and I don't run a wideband so all I have to go by is the butt dyno and a personal tendency to go a bit rich on the jetting.
Your, right mad dog I adjust it from the top. There are different needles, but from my experience there is a ton of adjustment on each needle. When I need to adjust , I rich it up till the engine starts to bobble , then lean it up 2 clicks. This has been very accurate so far. I take my raptor to mike at little sahara power sports to dyno and tune if needed, so far I have been right using above method. Super easy to tune, but not a huge hp carp. I wish the 39's were this easy to tune.
2002 raptor 719 trinity built , trinity ported head with kibblewhite white valves and kw hd springs , stage 3 hot cam,39mm fcr carbs trinity intake with k&n air filters, barker dual exhaust, dynatech cdi, +4 swing arm, rear race hubs, durable axle, + 2 front and rear, rear link flip, front lowered (-2), 6 inch led light bar. Pro Taper bars, Dr.D reverse relocator, oversized oil tank [SIGPIC][/SIGPIC]