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View Poll Results: Which Heads and Cam set-up???
PRC Stage 2.5 5.3L Heads unmilled, with .041" gaskets, and an MS3 Cam
23
50.00%
PRC Stage 2.5 LS6 Heads unmilled, with .041" gaskets, and a TRak Cam.
19
41.30%
Neither (please explain)
4
8.70%
Voters: 46. You may not vote on this poll
Heads + MS3 vs Heads + TRak
Heads + MS3 vs Heads + TRak Alright guys I am doing my heads and cam and will have to be ordering parts in the next couple weeks.....my goals are 450rwhp/410rwtrq but dyno numbers don't matter as much as ET's. The car is a daily driver but parked most of the week as i am at University. Will see a good bit of strip time, probably at LEAST once a month probably twice a month. Let me know which setup to get guys and which will give me more power, and better ET's. The car is a 99' Camaro SS will have full bolt ons, and M6 tranny with 4.10 gears. It will have a FAST 90/90 set-up or i might wait for the new Weiand Street Warrior. It needs to be streetable but i have a high tolerance for big cams so no worries, as long as she runs! 
Options:
1) PRC Stage 2.5 5.3L Heads, unmilled with felpro .041" gaskets and MS3 Cam (237/242 .603/.609 112LSA)
2) PRC Stage 2.5 LS6 Heads, unmilled with felpro .041" gaskets and TRak cam (231/235 .640/.590 112LSA)
Thanks Guys!
Options:
1) PRC Stage 2.5 5.3L Heads, unmilled with felpro .041" gaskets and MS3 Cam (237/242 .603/.609 112LSA)
2) PRC Stage 2.5 LS6 Heads, unmilled with felpro .041" gaskets and TRak cam (231/235 .640/.590 112LSA)
Thanks Guys!
well the TRak cam is VERY similar to the Trqr V.3 and I have seen better numbers out the the TRak cam, thats the only reason i have TRak rather than TRQ3. i do plan on going 383 in the future but I will mill whatever heads I have to have a CR of around 12:1 and use higher octane fuels. (will be a track car only by then)
i would do just a cam(ms3) and full boltons and some spray. then when its time to build the big motor buy heads. they always have new better products coming out all the time. but if i had to vote id go option. should be bad ***. have fun!
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^^ What he said. I broke my stock rear end several times when I was cam only with less than 400HP. If you need that car for daily transportation the rear needs to be addressed first. I put 600 dollars worth of parts in my ten bolt in a 3 week period: 2 sets of gears and an axle. Three trips to the track and it broke the first pass each time.
My dad put down 433 with the ms3 and 5.3 on a mustang dyno...he is around 3200-3250 weight and went a best of 1.40 60ft 10.56 at 125mph...in around 0 da weather...check out nhraformula00 for more info...hope this helps
I have the PRC 5.3l MS3 combo but had stock TB and stock pulley and hit 421. My mph was 118mph. I have since added a 90/90NW and hope to be at the 450hp but cannot dyno until the snow goes away.
TECH Resident
Joined: Jan 2003
Posts: 855
Likes: 0
From: AUSTIN TX
Well since you are obviously not afraid of the LSK lobes (used on the intake of the TRAK and V3), I would lean towards the MS4 over the MS3. Allegedly, the MS4 makes more power down low and in the mid without sacrificing anything up top compared to the MS3. Of course with either of these cams you are going to need to flycut to optimize your DCR (i.e. run the .040 gaskets and mill the heads to get your compression up).
call tsp you can get astg. 2.5, 5.3l heads and ms3 cam package and just use gm graphite gaskets
they recess the valves so you dont need to flycut and everything works great... i dont see why people would buy tsp heads and then go and try and match them up to a different vendors cam...
i figure that if i trust tsp enough to make my heads then i should trust them on the cam too
if i had to do it again id prolly pick my same setup or mabye try and and use the ms4 and eddlebrock heads (providing ptv would work)
they recess the valves so you dont need to flycut and everything works great... i dont see why people would buy tsp heads and then go and try and match them up to a different vendors cam...
i figure that if i trust tsp enough to make my heads then i should trust them on the cam too
if i had to do it again id prolly pick my same setup or mabye try and and use the ms4 and eddlebrock heads (providing ptv would work)
I have TR trak cam it works great and pulls strong (Check vid in sig) but If your planning to go the track I'd go with MS3 with 4.10 gears that thing will pull hard and will work better at the track IMO.
If I plan to do another H/C setup I'll go with MS4 and PRC Stg 1 LS6 Heads and if you can flycut the pistons then go with PRC Stg 2.5 LS6 Heads this setup will get 480rwhp+ with Fast Intake.
If I plan to do another H/C setup I'll go with MS4 and PRC Stg 1 LS6 Heads and if you can flycut the pistons then go with PRC Stg 2.5 LS6 Heads this setup will get 480rwhp+ with Fast Intake.
TECH Resident
Joined: Jan 2003
Posts: 855
Likes: 0
From: AUSTIN TX
Here is the deal (though there are a few that feel DCR is over rated), the larger you go with the camshaft (more duration) the more static compression you need to make the same DCR as you would with a smaller cam. So even though you may be able to run a thicker gasket or not mill the heads to get the big cam to fit without flycuttting, it will produce an even lower DCR than the exact same setup would with a smaller camshaft. This tends to produce much lower TQ numbers on the dyno, but more importantly produces a set up that just feels lazy, and has no get up and go until much later in the rpm range. So, to run the bigger cam and produce a good tq while making it feel much more driveable, you have to increase your compression ratio. The easiest way to do that is with the thinner gaskets, next is to mill the heads, then you could mill the block, or replace the pistons (or play with the valve events, but trying to keep this simple). The problem is all of these things except changing the pistons (or valve events) moves the valves closer to the piston which can lead to some interference, especially when combined with even larger duration camshafts. Now I realize 90% of you reading this are saying no **** sherlock, but i just wanted to throw that out there incase the original poster or any of the others following this thread fall into the other 10% category.
ms3 here with the termy heads and full bolt ons, did 470/417 and my car is very streetable. I now have a 9" and the more restrictive slp dual dual with the big fatty muffler so Im sure I lost atleast a good 25hp. I just put a elec cut out and it feels a little better on the top end so hopefully Im sitting around 450 which for me thats perfect for a car that streetable as hell and I can take the track. The 9'' has 3.89 gears and the ms3 loves these gears, before I didnt have to much low end now my TA is a rocket down low with plenty left on the top end. Overall Im very happy with my set up. I have a 100 shot for the days when you never know...
I vote ms3/heads...
I vote ms3/heads...
I Agree, This Is Why The Ms3 W\h 5.3l Heads Is Such A Great Combo For The Stock Unmilled Shortblock .. You Get A Bump In Compression And A Huge *** Cam...
The Only Thing I Can Think Of That May Be Better Is Terminator Heads And Thta Is If You Dont Have To Fly Cut--- Fly Cut Isnt So Great If You Plan On Spraying
The Only Thing I Can Think Of That May Be Better Is Terminator Heads And Thta Is If You Dont Have To Fly Cut--- Fly Cut Isnt So Great If You Plan On Spraying
