lm7

iTrader: (8)

im currently looking for a good H/C setup for a Lq4 thats going to be going in my RCSB sierra id say around 4300#'s
im looking for a mid low 12 out of it...im looking at getting a set of patriot ls6 style stage 2's, from the many searches ive made it seems like this is the head to run for some good compression with out milling and sacraficing clearance for a big cam.so i want to run the trex cam.... how would this big cam act in my 6.0 ive heard the more cubes the better...ill be running a 3600 stall. and support it with LT's, intake ect... i just want to know if im way off in my decision for my application, i plan to spray into the 11's with a 125 shot.
also if i were to run this cam with these heads what else would i need as far as valve train and other parts required for this setup.....first time doing heads and cam on anything....

BlueSix

I'd think you would want a cam with more low end in such a heavy vehicle.

lm7

iTrader: (8)

im not really lookin for anything to tame... it will be DRIVEN more than commuted if that makes sense...its not hardcore weekend warrior but its not going to be on the morning commute u know what i mean?

BlueSix

I still think you will want more low end in a 4300 lb vehicle.

Cal

iTrader: (1)

You can cam a truck, you just won't be doing any towing afterwards. It will be a race truck. To compensate for the weight of the truck, you can do rear end gears.

oange ss

iTrader: (50)

bigger is not alway better

Sport Side

iTrader: (6)

as seen by racing trucks

LM7,

You could make alot more usable power with something smaller.

lm7

iTrader: (8)

ill be doing ZERO towing. i guess you can say it is a race/cruise truck. what about this thunder cam: 236/230 .602/.575 112 LSA im just worried im not gonna make enough N/A power... i dont have the money for a stroker right now...and i think im gonna eventually convert to an 80e and im worried the 80 e is gonna eat up alot of the power i make off a conservative cam...which cam would u guys sugggest?

BlueSix

I personally would look at a cam under 230 duration. you say this will only be a cruise/race truck, but do you really not want the power to come on until 4000 RPM? Call a couple of the sponsors ( i reccomend FMS) and tell them what your goals are, see what they advise head/cam wise. Unless you plan on running a big stall and steep gears the lack of low end will hurt your track times. And do you really want to have to spin the 6.0 to 7000 RPM?

TigerFan187

iTrader: (1)

Did you post in the Truck performance section? You should get alot of feedback-especially cince your doing LQ9!

lm7

iTrader: (8)

yeah i posted there and i posted here TWICE haha not alot of feedback ..i guess my question is to generi...more han anything i was hoping someone could tell me about this specific combo...ill post in the truck section again i guess...

tim99ws6

iTrader: (31)

If youre planning on spraying you want a cam with less intake duaration and more exhaust duration, like a 231/237.

Personally, I'd try something adounr the 225/230 range if i were you

lm7

iTrader: (8)

thanks! do u think that would get me to my goals even through a 4l80? now what else am i gonna need as far as valve train and other parts even with a cam like a 231/237 or 225/230?

tim99ws6

iTrader: (31)

Cam
springs
pushrods
maybe oil pump
maybe timing chain
tune

You're tranny should be just fine as long as you install a good tranny cooler, and get a decent tune. Best bet is to just go buy a "cam install kit" from wherever yo udecide to buy your cam. it ought to have everything you need parts wise to put in the new cam

I'm also not a truck expert by any means, but i would imagine the bigger the stall the better in order to get that thing 60' out of the hole......that's where your ET is gonna come from...better get ready to invest in some M/T street radials.

lm7

iTrader: (8)

yeah i want to go wiht a converter between 3400-3600, iwas asking about the 4l80 because im currently running a 4l60 and people have seen dramatic power decrease when converting.....

tim99ws6

iTrader: (31)

Sorry, I'm a M6 car, so maybe someone else can help you there...

cyphur

iTrader: (10)

then why convert? whats it going to cost you to convert, and if you're doing it for strength, what would it cost to do a rebuild on the current tranny? weigh your options before deciding.

lm7

iTrader: (8)

the 4l60 in a 4300lb truck isnt really an option after 450rwhp its on barrowed time...ive gone through built 4l60's with a p1sc and the stock lq4....ill need that strength of the 4l80e if i want to spray..converting would be 2800 plus what ever converter i decide on....

TigerFan187

iTrader: (1)

If you are planning any decent sized HP we will say 450+ and are going to spraying through the shifts and even if your not you need to do a 4l80e with the Transgo kit. It had been proven and its evident in the truck section that you will just keep going through 60's like there is no tomorrow! They say a nicely built 65 is a little weaker then a stock 80. But at least if you do kill an 80 which isnt easy to do you will be able to rebuild it and then you WILL NOT break it. you def need a 3000+ stall and as far as cam selection I would call a few sponsors and get their opinions on the setup.