GM High Tech article: MS4 and PRC heads= 129HP
11-13-2006, 06:39 PM
#47
TECH Fanatic
iTrader: (2)
Join Date: Nov 2006
Location: Aztec, NM
Posts: 1,360
Likes: 0
Received 0 Likes
on
0 Posts
They are flywheel #'s. I would check into a set of ET Performance heads or RHS(Racing Head Services). On my cousin's vette we put a set of modified RHS 225cc heads with a cam that is pretty big for a stock bottom end. The cam number's are
advertised duration 302 int/exh
.050" 234 int/exh
112* LSA
108* int centerline
.578" lift int/exh
We did not have to fly cut anything on the piston's. So far it has made 444.97 rwhp and 405.74 rwtq SAE corrected on a Dynojet 248 @6,400 rpm. The dyno broke on us and are waiting for it to be fixed to finish.
advertised duration 302 int/exh
.050" 234 int/exh
112* LSA
108* int centerline
.578" lift int/exh
We did not have to fly cut anything on the piston's. So far it has made 444.97 rwhp and 405.74 rwtq SAE corrected on a Dynojet 248 @6,400 rpm. The dyno broke on us and are waiting for it to be fixed to finish.
11-13-2006, 07:04 PM
#49
Originally Posted by Trevor @ Texas Speed & Perf.
Guys we have several sets of these cylinder heads in stock!!
Their should be a group purchase and special price added to this.
11-13-2006, 08:15 PM
#51
Originally Posted by kornfreak_401
the Magic Stick 4 specs are: 239/242, .649"/.609" 111 lsa 2300-6800 RPM Power Band
the T-rex specs are 242/248 - .608/.612 - 110 lsa 3500-6700 RPM Power Band
i think the the t-rex is a big cube motor stick and way to much for a stock head ls1. plus it's not very streetable and the power band is not that impressive.
conneticut, thanks for the pic! how'd the istall go? any tips you want to share?
Jerry
the T-rex specs are 242/248 - .608/.612 - 110 lsa 3500-6700 RPM Power Band
i think the the t-rex is a big cube motor stick and way to much for a stock head ls1. plus it's not very streetable and the power band is not that impressive.
conneticut, thanks for the pic! how'd the istall go? any tips you want to share?
Jerry
anyone else wanna chime on how these heads with a T-rex cam would do? or should i just do the TSP stage 2.5 ls6 heads instead?
no offense Jerry, but you must not have taken a look at the fastest "cam only" list because the T-rex is the big dog for guys running stock heads & shortblock. i'm not trying to beat a list however, i'm just trying to maximize my dollar considering what i would spend on new double springs, seals, tit retainers, etc. for a few bucks more, i can upgrade my heads too and go faster.
11-13-2006, 09:10 PM
#54
Closed ex-Sponsor Account
Join Date: Mar 2004
Location: LONG ISLAND, NY; MADE IN THE USA
Posts: 513
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Trevor @ Texas Speed & Perf.
Guys we have several sets of these cylinder heads in stock!!
2000 C5 A4 3.42/3600 T/C
Powerbond UD
TSP cnc'd LS6 heads
Tqr v.2 cam
PRC dual springs
LS6 intake
LG LT's
tuned by Slowhawk
11-13-2006, 09:47 PM
#55
12 Second Club
Thread Starter
iTrader: (77)
Join Date: Sep 2005
Location: BCS/DFW TX
Posts: 1,744
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by PRAY HRD
anyone else wanna chime on how these heads with a T-rex cam would do? or should i just do the TSP stage 2.5 ls6 heads instead?
no offense Jerry, but you must not have taken a look at the fastest "cam only" list because the T-rex is the big dog for guys running stock heads & shortblock. i'm not trying to beat a list however, i'm just trying to maximize my dollar considering what i would spend on new double springs, seals, tit retainers, etc. for a few bucks more, i can upgrade my heads too and go faster.
no offense Jerry, but you must not have taken a look at the fastest "cam only" list because the T-rex is the big dog for guys running stock heads & shortblock. i'm not trying to beat a list however, i'm just trying to maximize my dollar considering what i would spend on new double springs, seals, tit retainers, etc. for a few bucks more, i can upgrade my heads too and go faster.
Jerry
11-13-2006, 10:49 PM
#56
Originally Posted by kornfreak_401
None at all pray hrd, it's all good , it's a learning experience. so are you saying that you would go with the t-rex cam only and keep everything else stock other than springs, locks......?? or that the whole cam and head package doesn't compare to the t-rex? the only thing that draw's me away from the t-rex is the power band!! I'm 99% most likely going to go w/ the MS4 and stage 1 ls6 heads....
Jerry
Jerry
in no way am i saying that a T-rex cam only car can take one of these pkgs (stage 1 ls6 heads w/MS4), with all other peramiters being equal & identical. i'm just saying that with all the success the T-rex cam owners who have a more drag oriented car have had, i don't see any reason for looking at any other cams really. the T was designed to work beautifully with an otherwise stock motor with full boltons.
as far as the power band is concerned, the fastest "cam only" guys are shifting upwards of 7000rpm and running 10.50 & faster in a lightened car, and mine is likely going to be lighter than ANY of the cam only guys being it's a fox body and with nothing more than an ls1 & tubular K/A-arms, it's already at 2850lbs! my hopes is to run the stage 2.5 heads and a T-rex and run 9's on motor only! but if need be, i'll throw a 100-150 shot on it. only time will tell though.
11-13-2006, 11:50 PM
#57
12 Second Club
Thread Starter
iTrader: (77)
Join Date: Sep 2005
Location: BCS/DFW TX
Posts: 1,744
Likes: 0
Received 0 Likes
on
0 Posts
damn dude, your hardcore!! that's bad ***! well i wish you the best of luck man.
I going to go with the heads/cam route. Im planning on doing some Auto-X not to much and I know the T is not the best set-up. I know the MS4 is not compared to the torquer but i can sacrife some tq #'s for some ponnies..... we'll see what happens
I going to go with the heads/cam route. Im planning on doing some Auto-X not to much and I know the T is not the best set-up. I know the MS4 is not compared to the torquer but i can sacrife some tq #'s for some ponnies..... we'll see what happens