View Full Version : 5.3 cam choices


slinginrods
08-08-2012, 08:34 AM
Im putting together a 5.3 carb set up for my truck,3.73 rear.th350 for now (5 speed later) 3800 stall tci 242200.706 heads mild port work,stock bottom end.truck weighs around 3400 lbs.single plane intake.1 7/8 long tubes.want a cam with a tight c/l ,most are around 114.really like to be around 110 or less ,with about 228-235 @50 duration,and between 570 and 590 lift.any ideas?i think ill have to go custom because everything seems to be for fi setups,i really want a cam thats engineered for a carb set up.

2lucke4u
08-08-2012, 09:08 AM
check out speed inc tu2 cam 114 lobe,.581 lift for turbo app but looks great for carbed setup,its the one i went with,within weeks of starting the engine so no power numbers yet,just 2 cents

ZONES89RS
08-08-2012, 03:04 PM
Anything in the low 230s with 110 and near .600 lift, I will see what I can dig up when I get home.

slinginrods
08-09-2012, 10:03 AM
thanks

slinginrods
08-09-2012, 08:19 PM
Still lookin any ideas?

ZONES89RS
08-09-2012, 10:21 PM
Saw a grind earlier, but i cannot remember, i need to see if i can look it up, i was trying to find the LSA on it, everything else looked right.

slinginrods
08-10-2012, 09:42 PM
Found this what do you guys think? http://www.dougherbert.com/gm-ls1-ls2-ls6-hydraulic-roller-cam-cls280285-595-595-lift-225-230-dur-050-112-lobe-center-33966.html

ZONES89RS
08-11-2012, 03:11 AM
Alright, I think the edelbrock large carb cam is calling you, 230/237 550 lift on a 110 lsa.

Part number 2216

ZONES89RS
08-11-2012, 05:53 AM
.540 lift actually.

topbrent
08-11-2012, 04:19 PM
Here is another choice to consider.

2002on22s:posted his cam choice in his carbed 5.3 truck.

This would be a strong runner on those EPS lobes.

2002on22s:
I'm running a very similar ground EPS cam in my 5.3, 226/234 - .598" / .601" with 108 LSA & 105 ICL

It's nasty dude, you'll love it

He also sent me an PM that was a bit more detailed in the characteristics of the cam as installed in his 5.3.
2002on22s:
"I did run it w/stock everything other than pushrods & I can tell you it sounded mean as hell & pulled like a mother past 2500 & that was with Holley 770 & the Victor intake tall boy, not the dual plane.
Anything below 2200 I really couldn’t tell a whole lot of difference, well I could, but the point I was trying to make is I sure didn’t lose anything down low & that was important to me. That was all ran off the MSD box."

ZONES89RS
08-11-2012, 04:31 PM
If he had a smaller converter I would agree, but a 3800 will put that eddy cam in the kill zone.

topbrent
08-11-2012, 05:40 PM
That Edelbrock 2216 cam sure is ground on some slow lobes. Would be likely be easy on parts, but a custom cam on faster lobes would/could/should definitely work better at all points.
Less seat timing, more torque, more power, better manners, easier to tune, idle, ect.
In the hypothetical example below, the EPS lobed cam would have 35° less overlap @.006 for the exact same events at .050!

An equivalent cam ground on the fast but stable EPS lobes would look like:

EPS .600/.603, 230/238 @.050, 279/287@.006 (adv) 110LSA/106ICL

Timing @.006"
Intake: 33.5°, 65.5°
Exhaust: 77.5°, 29.5°
Overlap: 63°

Timing at 0.050" Lift:
Intake: 9° , 41°
Exhaust: 53° ,5°
Overlap: 14°


Edelbrock #2216 cam:
.540/.540, 230/237 @.050, 314/322 @.006, 110°LSA/106°ICL

Timing at 0.006" Lift:
Intake: 51°, 83°
Exhaust: 95°, 47°
Overlap: 98 °

Timing at 0.050" Lift:
Intake: 9°, 41°
Exhaust: 52.5°, 4.5°
Overlap: 13.5°

slinginrods
08-11-2012, 07:20 PM
Here is another choice to consider.

2002on22s:posted his cam choice in his carbed 5.3 truck.

This would be a strong runner on those EPS lobes.



He also sent me an PM that was a bit more detailed in the characteristics of the cam as installed in his 5.3.

Is he sayin he had success running that cam on eps lobes with stock springs and retainers? I thought they were hard on valve train parts.with the 3.73 and the loose converter on 28 inch tires it'll come in fast.you think I'd be better with 4.11s? Damn this truck was supposed to be a dd if I wanted but I can't help but try to make it as quick as I can.might have to put a quick change rear in it lol.

ZONES89RS
08-11-2012, 07:43 PM
That Edelbrock 2216 cam sure is some ground on some slow lobes. Would be likely be easy on parts, but a custom cam on faster lobes would/could/should definitely work better at all points.
Less seat timing, more torque, more power, better manners, easier to tune, idle, ect.
In the hypothetical example below, the EPS lobed cam would have 35° less overlap @.006 for the exact same events at .050!

An equivalent cam ground on the fast but stable EPS lobes would look

yes, a eps grind like that would be great. I found what was cheapest and could use the cheapest valve train upgrades.

slinginrods
08-14-2012, 11:32 AM
called herbert cams today....guy said he didnt know anything about ls engines,tried to get him to send me a cam card on the cam i was interested in,"we dont have any,we get those made somewhere in california".sux because ive used there solid rollers in some of my bbc and sbc drag motors and they worked great.

wildcamaro
08-14-2012, 03:01 PM
With that converter and rear years you shouldn't have a problem with any cam with a 3000+ operating range...def stick with a low lsa...Edelbrock looks like a great choice based on the fact it was engineered along with the intake and similar msd controller...when I get a cam fOr my carbed 5.3 I'm going eddy even though I usually don't buy their products

slinginrods
08-14-2012, 03:18 PM
thanks for the input,im leaning towards the eddy due to the low cost of valvetrain parts.

The stunningman
08-14-2012, 10:40 PM
I put a TR224 cam in a carbed 5.3 S10 with a 5 speed, IMO it ran great, had over 400hp flywheel easy and great on gas too. I believe it was on a 110-112 max LSA. When you go 5 speed IMO your whole cam recommendation wil change. Your timing curve needs will. It pulled hard all the way through the powerband to 6500. The Thunder cam, Comp cam 918's and 7.4 pushrods were all bought here in the LS1 classifieds.