transaman98

iTrader: (16)

Wondering if someone could give a little input on whether I should go with the patriot LS6 2.5 heads or the 5.3 stage 2.5 heads? Mods are as follows...

XER273HR-114 224/230 .581/.592 114lsa
Vig 3200
LS6 Manifold
Hooker 1 3/4" Longtubes

The car is a '98 Trans Am with the stock shortblock and heads currently. Looking to pick up a new set of heads and on a budget. Any input guys?

gtorep

iTrader: (18)

In about two weeks Ill have a set of 59cc Patriot Stage 2 ls6's with 2.055/ 1.57 valves for sale for around $800.00 They were bought new in November and installed Dec. 08 and being takin off right now. Had a cam similar to yours, they performed very well. PM me and let me know if you want them.

transaman98

iTrader: (16)

what kind of horsepower did you put down? as the car sits on stock heads it put down 371hp and 362tq. Im looking for that magic 400hp!

SIC LSX

iTrader: (10)

i would get 5.3 heads You would be around 420ish easy. Check into prc heads too Let me know if ya need help im on the other side of lee's summit in warrensburg

transaman98

iTrader: (16)

thanks SIC LSX. im about to pull the trigger on one or the other. i am def. leaning towards the 5.3's though. I would love to get some input from one of this sites technical guru's though.... predator z or patrickg?

gtorep

iTrader: (18)

Mine made 428/395, You should easilly get into the 400's with either the ls6 or the 5.3.

SOMbitch

iTrader: (8)

General rule of thumb L6's will put down a little more on the top and 5'3's will make a little more torque down low. Keep in mind there are exceptions. Setup is the key...

ZMONSTER!

iTrader: (9)

love my 5.3's and mild cam

transaman98

iTrader: (16)

this is through an auto.... u guys think those numbers are plausable through an auto with those heads and my other supporting mods?

ZMONSTER!

iTrader: (9)

SOMbitch is an auto making 417/383 with a 3600 stall. Just look around at how many people are running 5.3 heads. There is a reason for it.

firefighting1101

iTrader: (48)

have a friend about to sell his PRC 2.5 5.3's he made great power for his small cam. 417/390 on a reverse split cam

ZMONSTER!

iTrader: (9)

5.3's are a proven budget head, I havent heard anyone say they were dissapointed with them

transaman98

iTrader: (16)

not questioning results...just seemed a bit more than I anticipated. i just hope that my hopes aren't too high now...

Fifedogg

iTrader: (15)

I would prob get the 5.3's for your setup. I would get PRC's instead of Patriot's IMO. I have heard they flow a little better. Dont know if thats true, but that's what I have been told.

ZMONSTER!

iTrader: (9)

I actually looked into this when I was getting my H/C setup. The patriot heads when fully assembled cost a little more(if I remember correctly) and flowed just a little bit less. You also get more from texas speed when you buy the package deal for the same price as heads only when you buy the patriots.

frito1

iTrader: (12)

Off topic.

transaman98, where do you dyno/tune your car at?

jhall

iTrader: (3)

I have the 59cc ls6 patriot heads and am really happy with them. i do not have dyno numbers, but i have beat a c6 vette from a roll and break the tires loose from a 40 punch with new tires. I am not sure if they are better than the 5.3 heads but they are a definate noticable upgrade from the stock 98 heads. For the money i spent i am really happy.Good luck with the combo you choose.

transaman98

iTrader: (16)

frito1 I have been using a small shop out in olathe for quite awhile. they are pretty good but turn around time always seems to be slow and price rather steep for what seems like is actually getting done. i think this site is a little picky about throwing shop names around if they aren't a sponsor so ill shoot u a pm.

n20kid

iTrader: (6)

Dart all the way! My 225's unported flowed 313 out of the box @ .600...

AU N EGL

What do they flow at .200, .300 and .400?