Cam swap and other questions

get a tune, LT's, Efans before you go cam then if you want just lope then get something with a good amount of overlap. For you something like a 220/220 112 would sound great in your truck and get that extended cab moving nicely. You will also want a stall to go with that cam.

if i were you i'd get full bolt-ons before you throw a cam in there. get long-tube headers and muffler, then get a tune. i'd get the tune first. :imo

What kind of stall you think? 3k? 3200? I'm clueless.

Wouldn't I have to re-tune it after the cam and stall anyway? Why not do that after?

04SilveradoScott said:

Wouldn't I have to re-tune it after the cam and stall anyway? Why not do that after?

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True, but if you put LT's on you will need to get tuned, unless you are doing it pretty much all at once like me. Except LT's those will be later for me but cam swap is this weekend. Anyways stall should be about a 3000 at least :imo

YAh you need full bolt ones first to support that cam. a large 220/220 cam will give you the sound, but not nessearly more power then a smaller cam. But if the sound is what ur after get the 220 and a 3k stall...and a shift kit, and servos...or a stock trans with 3k with crap

I'd add the TransGo HD shift kit to the list. I'd also use Doug Thorley Tri-Y LT headers.

What's the part number on the Transgo HD shift kit?

What's the advantage of the Thorley's over the Pacesetter's?

04SilveradoScott said:

I'll probly buy a bunch of shit then wait and put it all on at once.
What's the difference between 220/220, 222/224, 224/224, 216/224 etc. I've never really looked into cams before, so I'm trying to get the basic principle.

What tune's do yall have?

Here's my list:
-Pacesetter LT's (coated)
-ORY Pipe
-LS1 fans
-220/220 Cam
-3k Stall
-Vette Servo
-Tune

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you'd better add a converter to that list... you are talking about some cash to do all of that too... especially if you plan on having it all installed.

Your cam will dictate which converter you go with, as well as your rearend gears...

example: I'm running a 224/227 .576/.588 113+3 cam with a 3600 converter and 4.10's...
this may not be needed for your average street truck, but honestly, the smaller cams can be tuned properly and run VERY well... I'd be looking into something around a 220~222 for your app.... match that with a 3200 converter and some 3.73's, you'll have a pretty stout ext cab... not to mention, a really big tire bill... I know how you like those expensive tires LOL...


and as always, I'm an advocate of beefing up your entire drivetrain before you even think about cracking into that motor... the most I'd do without a few trans mods is headers and a tune... and maybe a few smaller bolt-ons..

basically the 220/220, 222/224, 224/224 are the intake and exhaust durations @.50. So the bigger the number the bigger the cam obviously. Split cams are also good for extended cab trucks, like the 216/224 cam for instance. If you got that cam on a 112 LSA it would have about the same lope as the 220/220 on a 112 LSA because they both have about -4* overlap and overlap is what determines lope but also determines how much air is being pushed in and out of the compression chamber in a given interval. There is another member on here right now that I cant remember his name but he put the 220/220 on a 114 in his 6.0 Extended cab so in your 5.3 extended cab it should be a really nice cam although if you want a little more lope I would go with the 112 LSA.

blsnelling said:

I'd add the TransGo HD shift kit to the list. I'd also use Doug Thorley Tri-Y LT headers.

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pacesetters flow better than the tri-y's. And are cheaper

3" collectors.... FTW.....

I don't think collector size is going to matter that much unless he's adding a turbo or SC. I like the Tri-Ys because they're supposed to have better lew end torque, but still have the advantage of being a LT header. They're the best of both worlds IMHO.

blsnelling said:

I don't think collector size is going to matter that much unless he's adding a turbo or SC.

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going with a decent sized cam requires full exhaust just like a SC does so scavenging can be at its full effect. You can shove as much air as you want into the compression chamber by going with a big cam but if it has no where to go you defeated the purpose.

every little bit helps... its not good when your collectors are your choke points for your whole exhaust system once the primaries come together... small collectors going into bigger pipe, creates turbulance and hurts your scavenging abilities... I know if I didnt have 3" collectors, mine probably wouldnt run the same... JMO though...

What size is your y-pipe or are you running true 3" duals?

Hey, that was post 400!! OK, so I'm still just a newbie:endofshow

3" collectors, dual 3" cutouts at the collectors, 3" Y pipe, 3 1/4 I-pipe dumped. still scavenges well and flows like crazy...