Intercooler2

iTrader: (24)

These are nice looking pieces! The flow sheet shows typical numbers listed on their site for 2.05/1.57 Stage 2 heads. They included the warranty sheet, head torqueing sheet and flow sheet. Should do well with the bump in compression to 11:1, FAST 92/92 and 224/228 cam.

Intercooler2

iTrader: (24)

The flow numbers are about equal to AFR 205's I think.

nocooler

iTrader: (5)

Nice...
I'll be interesting to see how it runs with the H/C/I.

allthrotle

iTrader: (2)

Im running the 243's with the 59cc chambers and put down some good power with them. My valve sizes are smaller though.

Intercooler2

iTrader: (24)

Those are good numbers! Trying to find the specs on your cam. I am in hopes of those numbers with my combo. Do you have track times?

allthrotle

iTrader: (2)

cam specs are 228/230 @.050 .585/.585 on a 112lsa. No track times. Im guessing somewhere in the 11's since I beat up on a 12.0 evo all the time.

DarkhorSe_SS

iTrader: (15)

I'm gonna go with the same heads.

Patriot Performance CNC Ported 243 LS6 / LS2 2.055"/1.57" 59cc Heads Assembled

What's the difference from your 2.05 and the 2.055?? Slightly bigger valves I'm getting


Nice numbers allthrottle

I'm going with the TV3 on a 111 lsa so hopefully my numbers are just as good or better. I do need to get the fast tho

99Ls1fever

iTrader: (3)

What Size combustion Chamber is on your heads 59cc?
What is the stock Combustion Chamber on a stock 853 head or 241?

DarkhorSe_SS

iTrader: (15)

66.67cc = 10.1 CR (stock LS1 head spec)

64.43cc = 10.5 CR (stock LS6 head spec)

Intercooler2

iTrader: (24)

These heads I am pretty sure are the 2.055 valved heads just called 2.05's.

I got the 64cc heads so with the .040" Cometics I will have 11:1

Intercooler2

iTrader: (24)

I will have it at the track the minute all changes are done (doing a 92/95 since Speed Inc. failed on delivery) and 42's. The 9" goes in the 25th so I want to head down on just that setup all bolt-ons and see if I can pull an 11. Then on to making some serious changes and hoping to drop it to low 11's.

99Ls1fever

iTrader: (3)

Good info thanks. I dont see though how 2 twnths can raise the compression of the LS6 TO 10.5 though? It seems so little an insignificant.

This is what I got off Patriot Performance Website. "The 59cc head is just a milled version of the 64cc head. The 59cc will yield a .5 higher compression than the 64cc."



Also what size Combustion Chamber is the 5.3 Heads?

Damian

iTrader: (89)

They definitely don't flow like AFR's, but Patriots are great for the money.

I did about 4-5 sets last year, and I saw a very consistant 30-35rwhp gain from them. The highest we saw was 41rwhp, but that was a 58cc head and thinner head gasket. Lots of compression.

Great heads for the money. If you could find a reputable porter to hand finish them for a good price, they're even better.

Bader-X

iTrader: (2)

1992 on the flow sheet ^_^ nice heads good luck

99Ls1fever

iTrader: (3)

Does anyone know what the stock Combustion Chamber size is on a 5.3 Heads?
Is it 59???

Intercooler2

iTrader: (24)

The 1992 number isn't the date. Actual date was 7/09. That's some other number... software I think

mtuggle86

iTrader: (7)

Its think there 61cc

mtuggle86

iTrader: (7)

Its think there 61cc

DarkhorSe_SS

iTrader: (15)

Do you have any sound clips?

How much of a difference is this cam toward the Torquer v.3? I read about the spring issues with the torquer so I'm curious on your pick of cam. Nice numbers again.

Thule

I got those heads, 226/226cam and fast90/nw90 and i am realy pleased, they are well made,
I got no dyno's but those heads woke my motor up,