DP75

Long time project finaly begins, been searchin for the right cam for my truck for weeks and I am at a loss. I scored a set of l92 heads, an am planning on installing them in my 2002 2500hd.
These are my ideas for the build, any input is appreciated.

Stock dual plane l92 intake,
100mm TB.
Howard's cam hrs-190235-14
216/224@050" 114lsa
551/551 lift.
Ls6 valve springs.
1-7/8 long tube headers
Double roller adjutable timing gear set (2 degree increments, 8 max)
Debating on .040 head gaskets to up the compression.
Some type of ECM tuning software.

The truck has 4.10 gears, 2600 stall (stock)

Scott at Howard's spec'd me out 208/214. 525/525 duration @ .050 l/c 114
Seems to mellow for my set up.
I do have access to a dyno, so my thoughts were if the cam is to big, advance it 2 degrees and tune.
Anyone else have thoughts on a cam?

SlowDude

iTrader: (4)

Big exhaust, big TB = bigger cam (Not a jumbo stick) just bigger if you want to have a little more fun. Future needs or goals?? Pulling large heavy trailer or road warrior? Look at my numbers in my sig. I'm all NA and plan to run a 200-300 shot of Nos so more compression was desired. I also very seldom pull a trailer. I am not satisfied with my cam either. So after I get everything dialed in and I squeeze every ounce of power out of this cam then I will have a better idea how much more cam I need. I run 93 pump gas and 110 at the track when its warmer. I also get 16-17 mpg when I keep my foot out of it which never happens. Everybody has an opinion and the only one you have to satisfy is you. Good luck man.

Vortec350ss

iTrader: (20)

Can the L92 intake take a 100mm tb?

I dont think those specs are bad, but it would be nice to know the advance in the cam. Also, it would be a good idea to bump compression a little for more power where you will need it. I like that cam with +2 or 3 of advance in your combo.

DP75

I think the TB will fit, if not ill go with the 90? I got the cam spec card on the Howard's 190235-14. Int opens 2 degrees btdc closes 38 degrees (both at .050)

Lunati recommended a cam with a 112 lsa, (20540729) I got the cam spec card on that also. That cam the intake opens at the same -2 btdc closes 34 abdc.
Obviously the overlap with the exh is different with both.
In thinking the 112lsa cams may give me the power and torque at lower rpms.
I don't really want to plane the heads, thinking thinner head gaskets will raise it slightly. I can always put boost to it..
Should I go one cam size larger than what's spec'd out? Possibly the 20540730? Duration @ .050 (Int/Exh): 217/228
Gross Valve Lift (Int/Exh): .549"/.566"
LSA/ICL: 112/108

Or they also spec'd out the
20540710
Duration @ .050 (Int/Exh): 212/218
Gross Valve Lift (Int/Exh): .531"/.531"
LSA/ICL: 113/109
With no advance.

Vortec350ss

iTrader: (20)

The advance in a cam is LSA minus ICL. So both cams mentioned above have 4* advance in them.

The first cam will work well, but don't expect a high rev screamer. It'll be good with a 6000 or 6100 shift point. It will also like a supercharger...

DP75

Ohh ok, I thought that when people are referring to advance they are actually changing the timing with an adjustable timing set.
That makes more sense LSA-ICL, I was wondering if there would be interference if it was advanced/retarded by the timing chain.
I am wondering if IDE be happier with the next one up, not looking for a high rpm screamer, or sacrifice alot of torque.
Lunati 20540730

Advertised Duration (Int/Exh): 267/278
Duration @ .050 (Int/Exh): 217/228
Gross Valve Lift (Int/Exh): .549"/.566"
LSA/ICL: 112/108
Valve Lash (Int/Exh): Hyd/Hyd
RPM Range: 1800-6400

LS1FREEK

iTrader: (1)

Tighter LSA (like a 108) will build more torque in the midrange (3000-5000) and keep pulling higher in the rpm range. I have a 210/216 .530/.532 108LSA +3 advance in my 2009 5.3, it builds good tq around 3000 and pulls hard all the way to 6800!! The wider LSA will build more power for low rpm part throttle acceleration (like 1000-2000 rpm) but if you have a smallish stall like a 3000, that 108 LSA will really help out to get that big beast moving. my 2009 CCSB 2wd 5.3/6L80e, 3.42 gear, ran a 14.7@94 mph with only that cam and pacesetter headers. Race weight was 5300# and density altitude was 4000+ feet. (80 degrees that day) Since then I've installed a 10" 2800 stall, gonna try to run it this coming spring in cool weather.

LS1FREEK

iTrader: (1)

Also, Jarret Faggart (AKA STOCK48) spec'd that cam for me, hit him up! He's spec'd some narly cams for us!

xdmikey

DP75,

I have a similar setup but cammed. My cam specs are: comp cam #54-600-11; .050 lift 219 intake 233 exhaust.

Lots of power but choppy. I'm fine with it but the sammichmaker doesn't like it since it makes her fat jiggle!

Just saying.

DP75

How's the low end torque?