Patriot Heads
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Patriot Heads
I have the flow chart for my Patriot heads and would like to get some input on the quality of these against other heads. How much RWHP will these put out?
Thanks,
SLPRC5
Thanks,
SLPRC5
Last edited by SLPRC5; Feb 21, 2007 at 02:18 AM.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
Try to PM L.A.P.D.(Supporting Vendor) ! they use a lot of Patriot heads. They do out perform the LS6 head and they are a good option for adding HP.
I will be going with a head and cam combo from LAPD which will net 405 RWHP "Proven" combo on an '98 A4 w/3.15's.
Thanks,Matt
I will be going with a head and cam combo from LAPD which will net 405 RWHP "Proven" combo on an '98 A4 w/3.15's.
Thanks,Matt
Burning Brakes
Joined: Nov 2006
Posts: 1,071
Likes: 0
From: Goose Creek SC
Compare them to stock heads, the fist column is LS6 and the second column is Ls1:
.1 == 64/52.5 --------- 63.5/52.9
,2 == 135.8/103.8------ 137.8/97.8
.3 == 195.2/135.4 ----- 196.0/129.7
.4 == 236.9/157.1 ----- 214.5/158.0
.5 == 260.0/169.4 ----- 223.5/169.9
.6 == 260.0/179.9 ----- 233.3/180.0
.650 = 260.5/183.0 ---- 237.2/183.2
You can also compare them to the Flow numbers of my heads on AFR's flow bench with a 3.9" bore and the exhaust through a 1.875" pipe:
Int. @ 28" on a 3.900 bore
.200....146
.300....208
.400....252
.500....283
.550....293
.600....298
Exh. @ 28" with a 1.875 pipe (3.900 bore obviously)
.200....117
.300....174
.400....209
.500....225
.600....235
Hammer
Last edited by thehammer69; Feb 21, 2007 at 04:12 PM.
Melting Slicks
Joined: Jul 2006
Posts: 2,080
Likes: 407
From: Mason Ohio
The vast majority of the time we use Patriot heads on our cars. They make great power, consistantly (We have several 530+ rwhp patriot cars, NA). Here is a customers that is for sale on this forum right now... http://forums.corvetteforum.com/show....php?t=1620359
The only thing to really top them is TFS, but they are in a whole different price range.
The only thing to really top them is TFS, but they are in a whole different price range.
Last edited by atljar; Feb 22, 2007 at 12:09 AM.
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Do you know what bore size they were tested with?
Compare them to stock heads, the fist column is LS6 and the second column is Ls1:
.1 == 64/52.5 --------- 63.5/52.9
,2 == 135.8/103.8------ 137.8/97.8
.3 == 195.2/135.4 ----- 196.0/129.7
.4 == 236.9/157.1 ----- 214.5/158.0
.5 == 260.0/169.4 ----- 223.5/169.9
.6 == 260.0/179.9 ----- 233.3/180.0
.650 = 260.5/183.0 ---- 237.2/183.2
You can also compare them to the Flow numbers of my heads on AFR's flow bench with a 3.9" bore and the exhaust through a 1.875" pipe:
Int. @ 28" on a 3.900 bore
.200....146
.300....208
.400....252
.500....283
.550....293
.600....298
Exh. @ 28" with a 1.875 pipe (3.900 bore obviously)
.200....117
.300....174
.400....209
.500....225
.600....235
Hammer
Compare them to stock heads, the fist column is LS6 and the second column is Ls1:
.1 == 64/52.5 --------- 63.5/52.9
,2 == 135.8/103.8------ 137.8/97.8
.3 == 195.2/135.4 ----- 196.0/129.7
.4 == 236.9/157.1 ----- 214.5/158.0
.5 == 260.0/169.4 ----- 223.5/169.9
.6 == 260.0/179.9 ----- 233.3/180.0
.650 = 260.5/183.0 ---- 237.2/183.2
You can also compare them to the Flow numbers of my heads on AFR's flow bench with a 3.9" bore and the exhaust through a 1.875" pipe:
Int. @ 28" on a 3.900 bore
.200....146
.300....208
.400....252
.500....283
.550....293
.600....298
Exh. @ 28" with a 1.875 pipe (3.900 bore obviously)
.200....117
.300....174
.400....209
.500....225
.600....235
Hammer
Thanks
SLPRC5
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Try to PM L.A.P.D.(Supporting Vendor) ! they use a lot of Patriot heads. They do out perform the LS6 head and they are a good option for adding HP.
I will be going with a head and cam combo from LAPD which will net 405 RWHP "Proven" combo on an '98 A4 w/3.15's.
Thanks,Matt
I will be going with a head and cam combo from LAPD which will net 405 RWHP "Proven" combo on an '98 A4 w/3.15's.
Thanks,Matt
I have a 224/224 567/.567 lift cam installed and these heads to go with it.
I have a 3:42 rear...A4..so my goal of 400 RWHP is reachable.
Thanks for your input.
SLPRC5
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
The vast majority of the time we use Patriot heads on our cars. They make great power, consistantly (We have several 530+ rwhp patriot cars, NA). Here is a customers that is for sale on this forum right now... http://forums.corvetteforum.com/show....php?t=1620359
The only thing to really top them is TFS, but they are in a whole different price range.
The only thing to really top them is TFS, but they are in a whole different price range.
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Melting Slicks
Joined: Sep 2002
Posts: 2,329
Likes: 0
Do you know what bore size they were tested with?
Compare them to stock heads, the fist column is LS6 and the second column is Ls1:
.1 == 64/52.5 --------- 63.5/52.9
,2 == 135.8/103.8------ 137.8/97.8
.3 == 195.2/135.4 ----- 196.0/129.7
.4 == 236.9/157.1 ----- 214.5/158.0
.5 == 260.0/169.4 ----- 223.5/169.9
.6 == 260.0/179.9 ----- 233.3/180.0
.650 = 260.5/183.0 ---- 237.2/183.2
You can also compare them to the Flow numbers of my heads on AFR's flow bench with a 3.9" bore and the exhaust through a 1.875" pipe:
Int. @ 28" on a 3.900 bore
.200....146
.300....208
.400....252
.500....283
.550....293
.600....298
Exh. @ 28" with a 1.875 pipe (3.900 bore obviously)
.200....117
.300....174
.400....209
.500....225
.600....235
Hammer
Compare them to stock heads, the fist column is LS6 and the second column is Ls1:
.1 == 64/52.5 --------- 63.5/52.9
,2 == 135.8/103.8------ 137.8/97.8
.3 == 195.2/135.4 ----- 196.0/129.7
.4 == 236.9/157.1 ----- 214.5/158.0
.5 == 260.0/169.4 ----- 223.5/169.9
.6 == 260.0/179.9 ----- 233.3/180.0
.650 = 260.5/183.0 ---- 237.2/183.2
You can also compare them to the Flow numbers of my heads on AFR's flow bench with a 3.9" bore and the exhaust through a 1.875" pipe:
Int. @ 28" on a 3.900 bore
.200....146
.300....208
.400....252
.500....283
.550....293
.600....298
Exh. @ 28" with a 1.875 pipe (3.900 bore obviously)
.200....117
.300....174
.400....209
.500....225
.600....235
Hammer
Melting Slicks
Joined: Sep 2002
Posts: 2,329
Likes: 0
what is the lsa? post your power when known-supply ICL if known as well
Pro
Joined: Jun 2005
Posts: 734
Likes: 0
From: Austin TX
Another thing about Patriot is their staff. Gunnar is really helpful. I emailed them for some specific information about my heads. He not only kept in touch by email but personally called me once he had a final answer. I have a set of stage 3s and make ~490 rwhp through stock un-ported throttle body.
Burning Brakes
Joined: Jul 2004
Posts: 1,172
Likes: 71
From: MA
Do a search on Patriot heads. Thear are other posts that discuss this and make comparisons to more pricy heads like the AFR205s. According to others port volume counts. From what I have read Patriots are good bang/$. Also do a search for AFR 105s.
What I haven't been able to find is the HP difference between the pricy heads vs the ported LS6 heads available for a given moderate cam. Is it 5-10 HP or more? What would one get for the $1000 price of a more expensive head?
What I haven't been able to find is the HP difference between the pricy heads vs the ported LS6 heads available for a given moderate cam. Is it 5-10 HP or more? What would one get for the $1000 price of a more expensive head?
Melting Slicks
Joined: Jun 2006
Posts: 2,983
Likes: 6
From: Redondo Beach Ca
What I haven't been able to find is the HP difference between the pricy heads vs the ported LS6 heads available for a given moderate cam. Is it 5-10 HP or more? What would one get for the $1000 price of a more expensive head?[/QUOTE]
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
[/QUOTE]I'm hoping these heads will put down 20 to 30 more HP.
I'll know for sure after they are installed and a dyno is done.
Melting Slicks
Joined: Jun 2006
Posts: 2,983
Likes: 6
From: Redondo Beach Ca
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
I'm switching from stock 2003 LS6 heads to the Patriots. The cam is a 224/224 .567/.567 lift LSA 114
Burning Brakes
Joined: Jul 2004
Posts: 1,172
Likes: 71
From: MA
The question I asked is what is the probable difference between ported LS6 heads - like Patriots - versus AFRs. I would expect 20 to 30 for a stock LS6 head, maybe 5-10 for a ported one? That is what I read on a previous post. If so, the cost differential is $100/1 HP. Would you be better off taking that added +1000$ and putting it towards other performance mods??? This is what I am struggling with.