What's the diffrence between LS6, 5.3L and 6.0L heads?
 

Well I'm fixing to pick a set up along with the MS3 but I'm trying to learn how they work and what's good and what's better. So what's the big diffrence? Texas speed has these heads on sale and I personally think they are pretty good for the price?

PRC LS6 CNC Ported Heads

Compared to these. What do ya'll think?

PRC 220cc 5.3L Stage 2.5 CNC Ported Heads

What about these?

PRC 6.0L Stage 2.5 CNC Ported Heads

Any recommendations? thoughts?

Jerry

well the 5.3 heads flow more...i believe the those 6.0 heads are used on there stroker, 4"bore minimum i believe,

bump.

I might be wrong.

The LS6 heads have a more desirable combustion chamber/valve Angle blah blah



I would still go with some 2.5 stage 5.3L

I have stock 243 heads(LS6) and they maybe made a 10-12 rwhp diff.

any other thoughts?

6.0L heads have 72cc chambers that will lower your compression. I just bought a used set of PRC LS6 2.5 heads. They were making 468rwhp on a 2002 Z06 with a Fast 90 and GX3 cam. Going to hand finish the ports before I install them on my car.
http://texas-speed.com/shop/item.asp...d=134&catid=40

5.3L stage 2.5 CNC ported cylinder heads are probably the best bang for the buck though.. :) .

Also with the 5.3L stage 2.5 CNC ported cylinder heads don't go crazy big with a cam. The large 2.04 valves require flycutting pistons if you go to big on a cam. If this is your daily driver and your only ride, keep it simple and don't go overboard with a large radical cam. You can make plenty of power with a medium sized cam...Stick with a cam like the Texas Speed Torquer 2 232/234 .595/.598 or the TSP XS Series Camshaft 233/239, .595"/.603" Camshaft and keep it on a 114LSA. They both should make 420+RWHP and drive pretty nice...

so you think the 5.3L stage 2.5 CNC ported cylinder heads will work with the MS4?

+1 for that.

id like to know cuz im in the market for a set of heads that'll match the MS4.

Texas Speed, will this work?

no, pretty sure Texas speed said the MS4 wont work with the large 2.04 valves without flycutting the pistons...

yup, i thought so... just wanted to make sure

Not trying to be a dick or anything, but you would get your answers a lot quicker if you were to just pick up the phone and call them.

not at all man, i'm actually in class all morning and haven't had time to call. :) plus i want to get some feedback from ppl that have done this....

Not too many, plus with all the miss-information in your other post about the MS4 and heads regauring weather it would fit or not I would hate to see you drop all that cash on parts that wont work together.

EXACTLY. Don't want to mess up. I just want to get several things clarified before i do. BASICALLY MS4 + LS6 Stage 1 heads will work, period. MS4 +the other heads will NEED flycuting.

YOU SUCK JERRY!!!!.......that is all........

I wish i had money.

LOL!!! What's a matter Brent, you scuurrd that I'll hand it to you again but harder and faster? J/K. Well it's still in the works but i'll let you know what i do...

just do some quick searches in the external engine section/ls1-ls6 internal section, there are tons of people that add their info in there... and you will find some good info

Your best bet is to pick up the phone and call Brian Tooley at T.E.A. (total engine airflow) he will spend as much time as you want on the phone with you and will get you the right set of heads for your budget and what you want the car to accomplish.