Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:
View Poll Results: better head??
PRC 5.3 stage 2.5
73
60.83%
Patriot "ls6 style" stage 2
47
39.17%
Voters: 120. You may not vote on this poll

PRC vs. Patriot??

Thread Tools
 
Search this Thread
 
Old Nov 3, 2006 | 12:03 PM
  #1  
Ego Killer's Avatar
Thread Starter
TECH Fanatic
iTrader: (147)
 
Joined: Feb 2003
Posts: 1,067
Likes: 1
From: Tullahoma,Tn
Default PRC vs. Patriot??

I am ready to buy a set of heads I see the PRC 5.3 stage 2.5 is about the same price as the "LS6 style" stage 2 patriots. wich one should I go with? I have all the bolt-ons with a F13 cam A4 w/ 3800 converter
Reply
Old Nov 3, 2006 | 12:19 PM
  #2  
you2slo's Avatar
11 Second Club
 
Joined: Mar 2003
Posts: 1,173
Likes: 1
From: NE Ohio
Default

Where's that "lurking" emoticon?
Reply
Old Nov 3, 2006 | 12:20 PM
  #3  
SideStep's Avatar
TECH Fanatic
20 Year Member
 
Joined: Mar 2003
Posts: 1,946
Likes: 1
Default

Originally Posted by you2slo
Where's that "lurking" emoticon?
Reply
Old Nov 3, 2006 | 01:19 PM
  #4  
TXZ28LS1's Avatar
TECH Senior Member
iTrader: (5)
 
Joined: Mar 2004
Posts: 6,163
Likes: 3
From: Classified
Default

they are both good quality. but i would go with the cheaper one.
Reply
Old Nov 3, 2006 | 01:45 PM
  #5  
WickedC5's Avatar
Launching!
iTrader: (3)
 
Joined: Nov 2005
Posts: 298
Likes: 0
From: Elk Grove Village Il
Default

you cant go wrong with either.

Last edited by WickedC5; Nov 3, 2006 at 01:54 PM.
Reply
Old Nov 3, 2006 | 01:47 PM
  #6  
Zach@Texas-Speed's Avatar
FormerVendor
iTrader: (7)
 
Joined: Apr 2003
Posts: 1,106
Likes: 0
From: Lubbock
Default

We just finished up a head swap last night using the stage 2.5 5.3L PRC heads. We will have dyno numbers later tonight on the setup when we get a chance to tune it. All of PRC's porting and valve job is done completely by CNC so there is no chance for variation or error in the build process. With the PRC heads you get a quality head, quality gains, for a budget price!! The 5.3L head is ported out to a 220cc runner. The stage 2.5 5.3L PRC head sells for 1199.99 plus shipping assembled with the PRC springkit, that price is for the pair!! If you need any more info or have any questions feel free to let me know and I will be glad to help.

Zach
Reply
Old Nov 3, 2006 | 08:47 PM
  #7  
BlackHawk T/A's Avatar
TECH Addict
iTrader: (3)
 
Joined: Nov 2005
Posts: 2,869
Likes: 0
From: Lincoln, NE
Default

Zach, I sent you an email a few days ago but haven't gotten an answer yet, so I thought this would be a good place to ask.

Can those PRC 5.3 220cc Stage 2.5 heads be ordered with lightweight valves and single 918 springs?
Reply
Old Nov 3, 2006 | 09:14 PM
  #8  
quiet_storm98's Avatar
12 Second Club
iTrader: (48)
 
Joined: May 2005
Posts: 2,017
Likes: 20
From: Virginia
Default

Originally Posted by BlackHawk T/A
Zach, I sent you an email a few days ago but haven't gotten an answer yet, so I thought this would be a good place to ask.

Can those PRC 5.3 220cc Stage 2.5 heads be ordered with lightweight valves and single 918 springs?
I am also wondering kind of the same thing..with the cam i will have i wont really need dual springs
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Nov 3, 2006 | 10:47 PM
  #9  
Blown04Z06's Avatar
TECH Apprentice
 
Joined: Sep 2005
Posts: 370
Likes: 0
From: DFW, TX
Default

i think you should run the PRC stg1 LS6 heads for less than a G.. why are you not considering those instead of these other 2?
Reply
Old Nov 3, 2006 | 11:58 PM
  #10  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

You can do that on any head. Just send them a set of hollow valves and they can do the rest.
What I would like to see is a 2.10 set of hollows working on a stage 3
Reply
Old Nov 4, 2006 | 09:17 AM
  #11  
Ego Killer's Avatar
Thread Starter
TECH Fanatic
iTrader: (147)
 
Joined: Feb 2003
Posts: 1,067
Likes: 1
From: Tullahoma,Tn
Default

I went ahead and ordered a set of PRC's yesterday...hope I made the right choice.I think I did
Reply
Old Nov 4, 2006 | 06:30 PM
  #12  
2000PewterZ28's Avatar
Launching!
 
Joined: Apr 2003
Posts: 277
Likes: 0
From: Town near you
Default

PRC hands down!There is no comparison between the two.PRC constantly makes consistant great power.I can't say the same for Patriot.PRC uses the best equipment,and they know how to produce a quality product.IMO,Patriot only has a good price,not good proven,consistant quality.
Reply
Old Dec 2, 2006 | 09:49 AM
  #13  
NHRAFORMULA00's Avatar
10 Second Club
20 Year Member
iTrader: (2)
 
Joined: Mar 2002
Posts: 1,629
Likes: 13
From: Manteno,illinois
Default

I ordered a set also yesterday PRC 5.3 stage 2.5 along with a MS3,the heads come with stainless valves and you can get 2 different sizes,202 or 204 depending on what cam your gonna run.They have more compression than the cheaper LS6 heads,and a smaller port for higher velocity,(more bottom end on a smaller cube inch motor)No fly cutting to do on this set up also.IMOP pretty good set up for the $$ amount.
Reply
Old Dec 2, 2006 | 10:13 AM
  #14  
N4cer's Avatar
10 Second Club
iTrader: (11)
 
Joined: Apr 2006
Posts: 2,526
Likes: 1
From: Ashland, KY
Default

On the 5.3L heads, do they have the lower valve clearance that all 5.3L heads have, compared to LS6 heads?
Reply
Old Dec 2, 2006 | 10:17 AM
  #15  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

unless the valves are sunk, yes
I run a set of 2.04/1.57 unsunk (one of the first PRCs) milled .025 (59cc) with a TV2 113, 2.2cc PVR
Reply
Old Dec 2, 2006 | 10:34 AM
  #16  
S1LV3R's Avatar
TECH Regular
iTrader: (5)
 
Joined: May 2005
Posts: 433
Likes: 1
Default

What's the compression gonna be on a stock motor,stock head gaskets and unmilled 5.3's?
Reply
Old Dec 2, 2006 | 04:55 PM
  #17  
NHRAFORMULA00's Avatar
10 Second Club
20 Year Member
iTrader: (2)
 
Joined: Mar 2002
Posts: 1,629
Likes: 13
From: Manteno,illinois
Default

i believe its10.75 unmilled on the 2.5s
Reply
Old Dec 2, 2006 | 06:42 PM
  #18  
N4cer's Avatar
10 Second Club
iTrader: (11)
 
Joined: Apr 2006
Posts: 2,526
Likes: 1
From: Ashland, KY
Default

So you already had the combustion chambers CC'd?
I ask because usually when porting 5.3 heads, a good company will do valve deshrouding that takes some meat out of the chamber. Add to that TSP is good about sinking the valves on most of their heads to give more clearance for ya, but that'll take a little out of the chamber too. That said, it's a great trade-off with 5.3L heads to have the valves start a little higher.
Reply
Old Dec 3, 2006 | 07:36 AM
  #19  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

PRC's are 63cc sunk and 64cc unsunk (unmilled)
Reply
Old Dec 4, 2006 | 07:12 PM
  #20  
bad6as's Avatar
11 Second Club
iTrader: (17)
 
Joined: Mar 2005
Posts: 4,796
Likes: 0
From: Maryland
Default

what prc heads would go better on a stock bottom end, with a 227/231 on lsk lobes with a 6500 shift point. i was looking in to the 5.3L 2.5's
Reply



All times are GMT -5. The time now is 10:06 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE