New brand of heads
Thread Starter
TECH Fanatic
Joined: May 2003
Posts: 1,292
Likes: 6
From: RainbowCity,Alabama
New brand of heads Just finished a customers car with a Precision Race Components H/C package.The heads are Stage 2 5.3L heads with a PRC custom 225 camshaft.The following is a list of components that come in the cylinder heads
5.3L castings ( NEW )
PRC Dual springs ( .640 lift ) stock diameter,drop in
140lbs @ 1.800
PRC Titanium retainer
PRC seat bases
steel bodied viton seal
Ferrea 2.055 Intake Valves
Ferrea 1.60 Exhaust Valves
Here is a link to results of these heads.
https://ls1tech.com/forums/dynamometer-results-comparisons/208929-prc-225-cam-prc-stage-2-5-5-3-heads.html
https://ls1tech.com/forums/dynamometer-results-comparisons/207313-tsp-magic-stick-prc-heads-a4-dyno-results.html
The cylinder heads sell for $1529 outright, or 1329 if you supply the cores.
The custom cams are $379.00. 
5.3L castings ( NEW )
PRC Dual springs ( .640 lift ) stock diameter,drop in
140lbs @ 1.800
PRC Titanium retainer
PRC seat bases
steel bodied viton seal
Ferrea 2.055 Intake Valves
Ferrea 1.60 Exhaust Valves
Here is a link to results of these heads.
https://ls1tech.com/forums/dynamometer-results-comparisons/208929-prc-225-cam-prc-stage-2-5-5-3-heads.html
https://ls1tech.com/forums/dynamometer-results-comparisons/207313-tsp-magic-stick-prc-heads-a4-dyno-results.html
The cylinder heads sell for $1529 outright, or 1329 if you supply the cores.
The custom cams are $379.00. Last edited by TVWilkes; Aug 26, 2004 at 05:47 PM.
TECH Fanatic
Joined: Dec 2002
Posts: 1,084
Likes: 0
From: Bring it........ b*tch
Originally Posted by jermstyle
very nice... what are the flow numbers on the heads? And intake runner size? Specs on the cam?
Originally Posted by jermstyle
What compression was the car running that put down 450?
Originally Posted by jermstyle
Those are great numbers for such a smallish cam, and the torque is awesome.
Track times are a must! Any pics of the ports on these heads? And what is the intake port volume?
Track times are a must! Any pics of the ports on these heads? And what is the intake port volume?
I gave a couple of local guys that are on the board a ride in it this past weekend.. maybe they'll post up about the way it ran.I was rushed installing the heads so I didn't take pics of them, but Terry can make a few of some heads he has. As far as runner volume goes, I was under the impression that they were 215cc range, but don't hold me to that.. Terry can clarify that for sure.
Trending Topics
On The Tree
Joined: Feb 2003
Posts: 194
Likes: 0
From: Birmingham, AL
Originally Posted by jermstyle
Those are great numbers for such a smallish cam, and the torque is awesome.
Track times are a must! Any pics of the ports on these heads? And what is the intake port volume?
Track times are a must! Any pics of the ports on these heads? And what is the intake port volume?
. As soon as i do my cam swap I'm going with these heads 
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo
Thread Starter
TECH Fanatic
Joined: May 2003
Posts: 1,292
Likes: 6
From: RainbowCity,Alabama
Originally Posted by jermstyle
We need pics, track times and a sound clip.
Also, do you use a super 7 style locker?
Also, do you use a super 7 style locker?
TECH Fanatic
Joined: Nov 2003
Posts: 1,380
Likes: 0
From: The point of no return...
The car is FAST!!!! It's sick! Fastest car I have ever ridden in and that was with the cut-out closed losing about 20 RWHP. I have never been that surprised by brute acceleration! Me --> 
p.s. Thanks, Scott. Now my T/A seems slow again.
p.s. Thanks, Scott. Now my T/A seems slow again.
Thread Starter
TECH Fanatic
Joined: May 2003
Posts: 1,292
Likes: 6
From: RainbowCity,Alabama
Originally Posted by Redlinez
Awesome heads Terry. Does that conflict with the sale of Patriots? I'm not surfing as much as I used to. Do you have two businesses?
This does not conflict with Patriot,because I no longer work for them.I am fulltime at Racetech Speed.
Yea, I just found out. I guess I only surf when I have money because every time I get on here I see something else better than ever to go faster cheaper!!!! I wish you the best, I'm sure you're somewhat in a tacky kind of situation but apparently as I posted on another relative post, the power goes where you are!!! Too bad you can use 5.7 heads as cores.
Originally Posted by -Joseph-
From what I understand PRC won't be using super 7 locks because of several failures.... I'll call & find out though.
Originally Posted by Terry@RacetechSpeed
Just finished a customers car with a Precision Race Components H/C package.The heads are Stage 2 5.3L heads with a PRC custom 225 camshaft.The following is a list of components that come in the cylinder heads
5.3L castings ( NEW )
PRC Dual springs ( .640 lift ) stock diameter,drop in
140lbs @ 1.800
PRC Titanium retainer
PRC seat bases
steel bodied viton seal
Ferrea 2.055 Intake Valves
Ferrea 1.60 Exhaust Valves
Here is a link to results of these heads.
https://ls1tech.com/forums/showthread.php?t=208929
https://ls1tech.com/forums/showthread.php?t=207313
The cylinder heads sell for $1529 outright, or 1329 if you supply the cores. The custom cams are $379.00.
5.3L castings ( NEW )
PRC Dual springs ( .640 lift ) stock diameter,drop in
140lbs @ 1.800
PRC Titanium retainer
PRC seat bases
steel bodied viton seal
Ferrea 2.055 Intake Valves
Ferrea 1.60 Exhaust Valves
Here is a link to results of these heads.
https://ls1tech.com/forums/showthread.php?t=208929
https://ls1tech.com/forums/showthread.php?t=207313
The cylinder heads sell for $1529 outright, or 1329 if you supply the cores.
The custom cams are $379.00. HOLY CRAP!!!
who said bigger is better
that shows ya its all about volacity