KrcSilverado

I just had my lq4 rebuilt and had it bored and had the heads ported and polished and put a cam in it its a 510 with 268 272 duration but it spun a cam bearing and im going to have to pull it so im just going to get a texas speed and performance all new rotating assembly but I dont know which cam I was I want the biggest one I could run on 93 pump gas I want to make alot of power NA cause I dont want to spend the money for a supercharger right now and I would rather have all motor

Mangled03gmc

iTrader: (95)

Whoever spec'd that first cam was on drugs. That is way to much duration for a daily driven truck, not very much lift. It all depends on the TQ converter you want to run. I would run something in the area of 600 lift with a duration in the area of 228-235 on a 112-114 lsa. You could get away with a converter in the 3000-3500 range.

dirt track racer 81

iTrader: (45)

If its .510 lift that's prolly advertised duration, not duration at .050..

Don't knock on those big cams saying their not street able.. Lol

KrcSilverado

How much hp would I be running with the 408 stroker and that cam you said

diRty?biRd

Lots of variables.... Intake, compression. Bigger verters/gears will show smaller #'s on the dyno. You would be in the range of 450/500

skeet

iTrader: (18)

lol im with ya on that one, its all in the tune, a great tuner can tune it to be streetable


25x/26x/621 lift, 12:1 compression pump gas 500+ wheel horsepower 4500 stall, needs a 5500 lol but drives great even on the street

KrcSilverado

Im running a stock intake and 9:1 compression and 373 gears id like to get the biggest cam I could get away with on 93 gas

MikeGyver

iTrader: (5)

Longer duration cams are more tolerant of low octane than torque cams. With your heads, a cam similar to mine should work for you. It was spec'ed to peak at 6000 rpm in my engine.

KrcSilverado

What are your cam specs and what was power rating on it

MikeGyver

iTrader: (5)

Specs in sig, low lift, like .551 or something. It seems like you have not talked to any cam companies, they can't give you a power rating. You are asking all the wrong questions and have a lot to learn. I suggest that you set reasonable goals and pay somebody to spec a cam.