ohhyea102

iTrader: (1)

ok guys this is what i have lq4 with a t-rex cam ported 853 heads with arp rod bolts and main bolts. i will be runing a fast 90/90 with 36lbs injectors and a the otrcai and a nitrous outlet plate kit.
my question is should i stick with the t-rex cam or get a custom grind?
i also will have a set of 243 heads off a 2007 5.3 that i plan on putting on.
my goal is 450rwhp on motor and in the 5xx on a 125 shot

in advance thats for the help guys

SE-R Spec

iTrader: (2)

grind of t-rex cam? your power quest is reasonable

ohhyea102

iTrader: (1)

the specs of the T-rex cam 242/248 .608/.612 110lsa +2

SJFGTO

You should be able to reach your goal with that cam, though it can't be the easiest thing to drive on the street I would think. If you are looking to improve drivability and achieve your goal of 450 (why this number I might ask?) you could swap in a custom grind. Check out Cam Motion, they do a great job with custom grinds.

ohhyea102

iTrader: (1)

well i mean im not dead set on 450 i would be happy with anything between 420s and up on motor. thats what i was worried about with that cam, i want something that will make soild numbers but be farily driveable. the car is not my DD so a little surge will be ok.

SE-R Spec

iTrader: (2)

have you not got the car tuned with the t-rex cam? i have a 251/259 .650/.650 112 cam and it is a nightmare under 2000 rpm.

you will make over 420 rwhp with this cam and nothing else. i made 423 hp 385 tq on 232/236 .601/.605 112 (essentially a vrx5) but it will have some massive bucking under 1800 rpm with your setup. dont let that scare you though, you keep it above or around 2000 rpm and it drives like a normal car lol

ohhyea102

iTrader: (1)

SE-R Spec to your question about if its tuned or not. no the lq4 is not in the car yet,
sorry i didnt say that but i am currently still in afghanistan.
i was just tryin to get some advise on this setup see if it would get the power i was
wanting. what rpm did you take it up to with the 232/236 .601/.605 112?
i was thinking about keeping it around 6500 to 6700 tops

SJFGTO

I have never driven a t-rex cam, but just based on those specs, even with a perfect tune, you will get more than "a little surge".

thehazz12

I'd think about looking into a different cam. The donkey dick cams aren't always the best performers. I've seen some pretty mild setups make GREAT power because all of the components are matched and compliment each other. You could pick something smaller and more driving friendly and still reach your goal of 450.
243's off a 5.3? I don't think so. I've never heard of that before. 799's (same as a 243) maybe, but I'm doubtful. I'd double check on that.

ohhyea102

iTrader: (1)

the hazz12 yea thats what i was thinkin, the lq4 came with the t-rex in it so ive got the money to buy a better cam.
yea i googed the 5.3 from what i have read the 07 and up 5.3s have the 243 but with different valves not size but they are not the same as the z06 valves

SE-R Spec

iTrader: (2)

i took the vrx5 up to the stock 6500 rpm. i twist the one i have now up to 7000 rpm. the vrx5 was a great cam with a little surge. try getting that grind with a 114 or 115 lsa and that might calm the surge down a bit.

like i stated before, my torque split was about 40 hp. if you want it closer than that, look into a smaller cam like 230 range with .600 lift.

big lumpy cams are awsome, but if i were to do it again, id tone it down a little. im more into the smooth/luxury power now

ohhyea102

iTrader: (1)

this will be my first big cammed car but i sent Ed at fti for a custom cam spec so im really looking forward to what he will come up with
thanks for the help tho

gconnoyer

iTrader: (1)

Mine made 458 on a mustang with a Svede, FAST, LT's and a 91 tune, and a small 230s cam.

You don't need to go with a ridiculous cam to make numbers. You need a cam that works with your setup.

FryZ71

Ed will hook you up...he spec'd the cam and p&p the heads on my car back in '07, no complaints...top notch, car's still running great.