I am looking to upgrade my cam in my 5.3. Right now it has the thumpr cam and i dont like how it runs. the truck is a 99 chevy extended cab. I can do the tuning with hptuners. i want drivabilty, i dont care about having the radical idle. I got tired of it with this cam.

more info
243 heads with beehive valve springs
flat top pistons
stock truck intake
shorty headers soon to long tubes
double roller timing chain with dampner
ls7 lifters
2400 stall
4l65e with vette servo
3:73 gears with g80

cams ive been looking at
216/220 low lift
216/220 high lift
212/218 high lift
tr220
tr224


I f i can get any inputs on these and some other cams i would appreciate it.

 

All of these are great cams with the stall and gears you have.

I would pick the 224 cam if it were me.

What model thumpr cam?

 

The 224 is an eye grabber. Its the 219/233 536/553 109 lsa

 

I've been pretty happy with both the tsp 220r I have in my 2004 silverado 5.3 and and the 228r I have in my 5.3 swapped gto. Both off the shelf cams that are. 600/600 on a 112lsa. Very good prices with Texas speed and easy to deal with. I have yank 3600s in Both. Both vehicles run in the 12s. Pretty happy with that.

Very streetable cams as well.

 

If you can find the tr220 -112lsa .551/.551 lift

my 99 ecsb 2wd 5.3 with 862 heads 3200 stall 3:73 ran best of 13.59@99.3

drove it daily for two years- hauls trailers pretty good to.

@ 75mph on 30.6" tires i avg about 17.3 mpg - with 4x4 quad in bed loaded with camping gear. with a little better than a mail order tune it could've went up in my opinion.

 

Last time I was on Texas speed site they had some 220r 551 lift cams on closeout since they are now grinding cams in house.

BTW that's a pretty good time for an ecsb with those mods.

 

How is it that these above stock cams out do the bigger cams?

 

thats is good to know- they do that

bluecajun5.3 long ago proved how well this cam works with these 5.3 trucks... he ran a ls6 intake I believe and put his single cab truck into 12.7 if I recall

other mods are long tubes - ORY- and efans - truck was a blast I might go back to this setup down the road again (I added blower- different stall)

 

I think it's more of not how big it is but how well it can do the job kind of thing lol

everything matches well- size of motor- heads- cam size to the stall speed- gears - tire height - weight - for me that is

 

Being able to put the engine in its power range quicker.