jay_lt4

your going to luv this cam, i have the 503 with 1.6 rockers and at idle i have 14 inches vacuum at 750 rpm this is on a 383 with 11.1 comp., you will need tuning, my car is running 10's in the 1/4 and still gets 18mpg

MyShibbyZ28

Does the cc503 cam need a bigger than stock stall? Also...I've never really understand what the stall does...so...what does it do and why do people need a bigger one.


Anywho, back to topic, who ever has that grey Z28

91Z-28

In plain English, this is what a stall does. Lets say you have a 2800 stall. When you mash the gas, the RPMs will instantly jump to 2800. You need a bigger stall with bigger cams because they make power higher up in the RPM range.

sweetride45

jay_lt4: What's your setup consist of? Very nice numbers w/ that cam

chrism400

On a 350, I would like to see at least a 3200 stall with this cam. This is a good daily driver cam but it tends to be more toward the performance side in my opinion. The idle can be turned up a bit to get rid of most of the lope but I like mine at 825. Vacuum is adequate - no prob there. A cc 305 would be a bit better for daily driving without much power loss up top. The 305 would be good with a 2800 stall.

MyShibbyZ28

So it's not going to ruin the engine if you don't have a stall. It would just kind of...be chuggish or something till it got to its operating range? I don't want to pull the tranny, AND buy a new stall, just because I have a bigger cam.

vin1382

make sure you get a stall, and gears. mine was still pretty sluggish down low with a 2800 stall and 3.23 gears. it was much better with 3.73 gears...got into the power band much quicker.

sweetride45

I hear 3.23's are like the "happy medium" gear...not too low, not too high...still sluggish, in what respect?

SkillZ25

yea i have 1.6 pro mags, the vaccum is fine

jay_lt4

my setup:eagle forged 383 with 11.1 comp,comf cams 503, afr 195 lt4 heads, lt4 intake, jet hot long tubes with magna flow cat back, 4l60e built by me with all hardened input shaft and drum, gm 5 pinion planetary gears front and rear, blue clutches and kolene steels, upgraded pump, transgo shift kit, ford 9" rear with a spoon and 3.70 gears, and 125 hp nitrous express, all tuned with tunercat

91Z-28

I'm sold on this cam now. I compared it to a Hotcam on desktop dyno and the hp and tq numbers from 1500-3500 barely favored the hotcam. Looks like the 503 isn't a dog down low, what kind of peak RPM are you guys with 350s looking at?

MyShibbyZ28

Do you have a bigger than stock stall?

My car right now kind of seems like it'll slowly climb to 6k RPMs until it hits 3500 or so, then it just takes off. And if the cc503 power band is from 1500-5800 or whatever, than why should I need a bigger stall? The stock stall is good for 1500 ain't it?

EDIT: Just out of quick curiousity, I was looking at this cmotorsports cam

TN-221XL 221/227 duration, .542"/.560", 112lsa

Does anyone think that will need a stall? I kind of take it injectors are a must on almost any upgraded cam.

sw89lt1

another vote for the cc503

jay_lt4

i have a westcoastconverter 10" 2800 stall,

they are on e-bay and i highly recomend them, they have exellent cust service and the guy that builds the coverter actually calls you to get your car details before he builds it, it was shipped out when he said and the quality was awsome

MyShibbyZ28

Still comes down to me not wanting to take the tranny out just to put in a bigger stall, plus, spend that much more. I mapped out how much this is going to cost, and so far it is around 700, if you include the stall now.

EDIT: That's hard on a college type budget.