SlowazzVette2

iTrader: (1)

I am going to choose between these two. Pros and cons between them. Thank you. Oh and my car is stock cubed and I dont want to go over a 2.02 on the intake side I believe its over kill for what I am wanting to build. I want at least 11:1 compression also and this is my DD.

JayplaySS

iTrader: (15)

PP's are much cheaper and with the 59cc welded chamber you have no milling so you can have whatever cam size you choose that will work w/ standard deck height. You will have good lowend power from the comp. and then be able to run a good 600+ lift cam for rpm, I believe my PP's flowed 305 so they were a pretty good value actually. Its what I had on my 99SS. AFR's are a better head Im sure but by how much when you are talking about a 400-450rwhp DD.

Thule

just got my patriot heads, they are stunning!

JayplaySS

iTrader: (15)

You have the Patriot cam too. I went from that PP 226 cam to a TSP 233/239/600/603/113 and it idled better and made the car MUCH more fun. Very noticable difference for your future when you want a larger cam.

Thule

thanks man.. thats exactly what i am goin to do

davered00ss

iTrader: (4)

AFR's here. I gained 43rwhp & 33rwtq with them. Gains through out the whol rpm range. Low end TQ, partial throttle, and throttle response are amazing. I wouldn't hesitate to get them again.

SlowazzVette2

iTrader: (1)

Yes that is why I was leaning towards the 5.3 heads as far as compression goes. I am no expert but the smaller the chamber the more compression correct? Also I am debating that too as far as how much better are AFR's for the value.

LS1rulz

iTrader: (1)

Patriot vs. AFR? Talk about apples to oranges. You should compare AFR to TFS and ETP. Patriot compares more to PRC, Livernois, etc.

It's a no-brainer: if you can afford them, do the AFR over the PP any day of the week.

JayplaySS

iTrader: (15)

Yep, the smaller the chamber the higher the comp. With the higher comp, you will help build better low end power to help make up for the slight loss due to larger cams. When you have milled heads, the valve is closer to the piston so you have to keep an eye on PTV clearance. With the PP 59cc LS6 style heads, they are welded smaller so the PTV is the same as stock as long as the valve is not the larger 2.05 size. Do plenty of research before you buy heads though as there are so many choices today.

We know AFR makes a better head but I can tell you if you are looking for a budget minded 420+ rwhp 11 sec LS1 Patriots are perfect. Not everyone can afford a $2000-2500 set of heads.

mike moore

iTrader: (19)

Actually the new Patriot LS6 style heads aren't welded, they are milling them now to get the chambers down. That's from Gunnar about a week ago.

N2OGTO

AFR all the way

AKRA

I have had the patriot Performance 5.3 stage 2 heads for approximately 3 years and they have been a nightmare. To begin with, I did them the same time as the 224/560 112-lsa cam and I only gained 35 hp and improved 0.3 seconds in the 1/4 mile. After I had them for about 1.5 years I noticed a valve train noise while accelerating. We took off the rockers and noticed that three of the valves were cracked. One was so bad that it was ready to drop any time.

We removed the heads and I took them to the local expert and flow tested them. They only flowed 274 at 600 lift. That's approximately 30 less than they advertised. We also took my stock heads and had them flowed. At low lift ranges the stock heads flowed better than the patriots did. I had Jerry Arnold (local expert) port them and re assemble them with 2.05 and 1.6 ferra valves. Now they work better but it cost me an extra $1000 plus labor to get something for which I had all ready paid.

If I had it to do over I would have went with the AFR heads. It would have been cheaper in the long run and I would not have lost a year and a half of performance.

I am not telling you this to bash Patriot but to save you the heartache I had to endure.

Good luck,

Al

2MuchRiceMakesMeSick

i went with AFR 225s which I think are the right choice for FI

SlowazzVette2

iTrader: (1)

Thanks for the input everyone.

ExceSSive

iTrader: (13)

I like my AFR 205's and I had PP stage II's before. I will post up the dyno difference when I get done tuning.

Dave@LivernoisDSS

They do? http://www.gmhightechperformance.com...ylinder_heads/

chefman's_TA

Afrs all the way.
killer lookin zo6 2muchricemakesmesick

BriancWS6

iTrader: (18)

Between those two, if you have the money, AFRs without a doubt.

ls1 1990 VN

I had the chance to go with PP but went 5.3 TSP,Man i wish now i had gone with PP or beta still AFR, you only learn by your mistakes.

ss1

iTrader: (32)

That article was comparing an AFR 205cc to your 240cc LS6 Stage-3 head. I'm not disagreeing that you guys put out a nicely ported head, but shouldn't it be compared to an AFR 225?

Also, the article says the Livernois Stage-3 head is 220cc, but your website says they're 240cc....??? Just wondering which one they are.

Thanks