http://youtube.com/watch?v=hfMgvtb4WcY

not the exhaust but at the start when his engine is at low speed.. sounds like it's going to cut out? when he starts pulling out of the driveway

is that the cam causing that? I don't know why but I think that's an awesome sound.

 

Yupp,
That would probably be the cam giving it that lumpity lumpity sound...along with a set of nice free flowing headers. Its not just the cam though... most of the time when you put in a different cam...you have to adjust the timing etc. so theres a lot more to it than just slapping a cam in.
-Chris

 

+1 with 73f350... Also, don't forget the big block. That thing there is a large cube motor with tons of cam. Sounds great but you will really have to open it up to get the power - don't forget that larger cams often times require a vacuum canister to collect vacuum to run things like brakes. You can see it when he first puts it into gear. Does sound mean though!

 

just turn your idle way down and it will chug like that

 

So that's one of those highend cams? My truck will be for offroading for the most part, I'd imagine anything I'm wanting for my truck wont make it sound like that?

and JBradley, honestly, it's a different sound.. it's almost like the truck is falling asleep because it's bored and it's waiting for you to do something.

 

seems like everybody has that big block, big cam, flowmaster sound nowadays. if someone wasn't looking they'd probably think it was just another mustang driving by

 

Lots of duration, overlap, and lazy lobe centers (centerline) in the cam grind. That lope is actually both valves being open at the same time and the engine is dying for a fraction of a second. More overlap, and the lope gets more prononced. Does not do too many good things for vacuum, or throttle response when used in a low compression engine, nor does it usually make a bunch of power. Auto's behind stock engines with "big bump sticks" are usually found without a decent stall converter, and are not making good off idle torque, so using them in a truck that is not at the drag strip is usually just in there for the old time hot rodders that are after the sound, and disregard real performance.
A good solid roller cam with the right lobe centers and duration, can provide much better throttle response and make a ton more power, and will not have that lazy lope like a flat tappet hydraulic cam. Really has some nice pop, and is choppy at idle, and crisp when the throttle blades are cracked.