Evilution

I am having an 02 gmc rcsb 5.3 tranfered in. I had a few questions for you guys in the know.

1. what size cam should i throw at it? (im thinking 224/224)
2. who would you suggest i get heads from (i know its a personal preference thing but what was your choice)?
3. do the flt built 4l60e's hold up or should i go with a 4l80?
4. who makes the best long tube?
5. how do you know what rear ratio your truck has from the factory?

basically looking to build a solid heads/cam/nitrous 5.3 truck and when that goes build a 408. is the 224/224 cam good for the 5.3 or should i go bigger/smaller?

Thank you all,
Marty

Evilution

also do i need a 1 or 3 bolt cam?

03chevyroyce

iTrader: (2)

welcome!

1)depends on application (street/strip.etc)
2)once again, depends on application. if you get heads, get a cam to match them
3)i have heard a TON of good things about FLT. PM vince, he'll tell you more
4)there are a few manufacturers that make good long tubes. Pacesetters is the best bang for your buck in my opinion
5)there's a sticker with a lot of codes in the glove box. im not sure which one it is, maybe someone can give you a little more insight on this

6)3 bolt cam. your 02 is a generation 3 motor, so it has 3 cam bolts



hope this helps ya

Evilution

thank you sir i figured it was a 3 bolt but wanted to check. another question which shop would you recommend in the houston area? fastlane/mti/LME or who?

Thanks again

03chevyroyce

iTrader: (2)

depends on what you are looking to get done

Evilution

just looking at a cam swap and maybe heads. not sure on the heads yet. also who offers lockers for these cars? i have hear there is a true trac. is there a real detriot locker that fits? what rear gears do these 5.3 trucks come with? i know the towing package has 3.73's but what about the non towing? also are these truck 28 or 31 spline from the factory?

Thanks

Evilution

also whats the biggest cam you can go on a 5.3 and still pass emmissions?

charcoal03silvy

iTrader: (1)

About your gears, its a G code. GUx i believe, the x will be a number. Google it and it will tell you what you have.

You probably have 3.42s

Evilution

thank you sir i will do that

Evilution

as far as headers go how much of a difference (rwhp) do long tubes make on a bolt on 5.3, on average ofcoarse...?