ToxicWS6

i decided to make my own thread on this cause ive done a lot of searching but not quite answering what im lookong for directly, i have a 2003 2500hd lq4 with 243 heads and .40 headgaskets, right now it has stock cam in it and im looking to upgrade, from factory this truck came with a 2600 stall converter so i feel i can get away with a decent cam for a DD/fun silverado imo, im not going to change stalls to anything bigger, i had a 3600 stall 1500 with a 2.5 prc heads and custom grind cam, yes it was fast as hell for being on 38s at WOT, but anything else was a slug cause it just revs up no matter what, my current silverado does the same but not as high as its not as high of a converter so i dont want that feeling again, with that being said.

this truck might tow something once a year if that, its mainly a comfortible, fun DD i can throw my 4wheeler in the back of and if need be tow my WS6 to (or hopefully not lol) from the track if something happens, it has 4.10s and 33s atm and wont change stance, has LTs and cold air intake and currently tuned as i have HPtuners

im looking at these 3 cams obviously different size cams and all, the 224r, the 228r and the torquer V2

now lets say i install a cam (torquer v2 will say) that needs/suggests a 3200/3600 stall converter, what will it do at idle in D? just surge a little/jump at lights?

will taking of just not be optimal for cam and possibly bucky a little at take off or will it be impossible?

i know a lot of it is in the tune also

any i put on suggestions or just a further/better explaintion on this would be helpful also, i hope you all get an idea of what im going for

BMR Sales2

iTrader: (40)

Out of all those cams I would stick with the 224R as it will offer the best useable power curve and low end torque for the truck. It will offer the best drivability as you are wanting to stick with the factory converter. If you over cam a truck you kill the low end torque in the truck so I am not a huge fan of big cams in heavy trucks if you want to use it as truck. I have a 2004 ECSB Silverado with a LQ9 and 4L80E with a stock converter and it has a custom cam in it that is a 226/226 576/576 on a 112+2 and it drives incredibly well and tows like a champ.

If you chose to install something like a Torquer V2 you would really need a torque converter to get optimal drivability out of it. It would also help out with lack of low end torque the cam would have for a truck.

ToxicWS6

ok cool! thanks, the 224r is what i was leaning towards for power gains but yet still somewhat on the small side.

BMR Sales2

iTrader: (40)

I definitely think you will be happier with the smaller cam if you plan on using the truck as a truck.

ToxicWS6

yeah thats the idea, at least drive it like a fast truck

BMR Sales2

iTrader: (40)

I have been contemplating on buying a turbo kit for a while now. I have a feeling I am going to cave in soon and do it.

ToxicWS6

if i didnt already turbo my trans am, this would of already been boosted lol, the fueling is what makes it so expensive lol, still might happen one day lol, imo turbo/FI is the most DD friendly power, leave it all basically stock and throw 10psi at it and be a blast lol

96capricemgr

iTrader: (1)

On the gear/stall thing something most fail to understand is 4.10s with a 33" tire is like 3.23s with a 26" tire but instead of a 3500lbs car with crappy effective gearing it is a truck that can easily be over 5000lbs.
Most guys with f-bodies like 3.73 which with a 33" tire on the truck is equivalent to 4.88 but you still have a substantial amount of extra weight.
Point being, stall can be great in a truck IF it gets complimentary gears.

ToxicWS6

i understand how the gearing works and how larger tires suck a lot of power, with that being said i already get shitty rpms/mpg on the highway so i dont want to go steeper gearing even though first gear of 4l80es suck, 4.56 would help a lot and i considered it but not worth it since this is the vehicle i would use to travel with if i did, after 65-70 i get 9mpg highway :/ and thats with 33s and speedo recalibrated

96capricemgr

iTrader: (1)

Lugging a motor hurts economy worse than a little extra RPM.
People mistakenly think they get worse mileage at higher speeds because of engine rpm but it is pushing the vehicle through the air that hurts.