MS3/PRC Stage 1.5 5.3 heads, sound good?
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MS3/PRC Stage 1.5 5.3 heads, sound good?
Does the above sound like a nice set up? NO flycutting with the stage 1.5, and a nice bump in compression because of the smaller chamber. (I have stock gaskets)
I will also add the 90/90...
what do ya'll think?
Thanks
Erik
I will also add the 90/90...
what do ya'll think?
Thanks
Erik
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Agreed. Why lose PTV clearance so much with 5.3L heads, when you can just mill the LS6 heads?
After asking that, it might be worth it to do a good flycut and run those 5.3L heads. I'm sure the intake runners are killer. They have a lot to work with, and they've only increased them to 220cc. Pretty nice.
After asking that, it might be worth it to do a good flycut and run those 5.3L heads. I'm sure the intake runners are killer. They have a lot to work with, and they've only increased them to 220cc. Pretty nice.
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Originally Posted by NHRAFORMULA00
i orderded the stage 2.5 with 2.02 valves on their recomendation,TSP .085 intake,.095 exhaust clearance on a 113cl.i am thinking about the 90/90 also,i just have too many other things i want to do to the car this year.
Last edited by N4cer; 12-10-2006 at 12:34 PM.
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no i have not measured that on my motor...i was told that by TSP...
someone mentioned above just to mill some ls6 heads and have better PTV clearance overall...please elaborate...
I want to bump compression for a little more power...
someone mentioned above just to mill some ls6 heads and have better PTV clearance overall...please elaborate...
I want to bump compression for a little more power...
#11
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I dunno man. What's the duration of an MS3 anyway? 236/239 or something?
I say flycut so you can have maximum compression regardless of what head you run, unless you buy some stupidly expensive heads like ETP or TFS. Flycutting is simple, and I'll bet TSP can rent you the tool. If I were closer, I'd loan you mine.
I say flycut so you can have maximum compression regardless of what head you run, unless you buy some stupidly expensive heads like ETP or TFS. Flycutting is simple, and I'll bet TSP can rent you the tool. If I were closer, I'd loan you mine.
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The stage 1.5 have smaller exhaust valves(STOCK)-,thats probably why they are 100$ cheaper than the stage 2.5, thats the only difference that i could find. You could always order a cam with a different cl. for more clearance.Give them a phone call,they always pick up or else there on the phone with someone else.
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if i go 5.3 stage 1's....how much power am I leaving on the table by not going larger valves??
by the way, i know this isnt the right way to do things...BUT, the MS3 is in, and I do not want to change it...
lets go from there..
by the way, i know this isnt the right way to do things...BUT, the MS3 is in, and I do not want to change it...
lets go from there..
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I have the new 5.3 stage 2.5 heads with and MS3 and my cars goes through its rpms like a fat guy though a buffet line. I had TSP's stg 1 243 heads first and i wouldnt go back to them from my 5.3's
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I currently rn the TSP stg 1 243s with an MS4. The 237 cc runners on those heads are way too large for our cubes. I did not get the power I was expecting from my setup and I and Formato believe its the large runners. I would have gone the 5.3 route but I do not know how to flycut and really didnt have the money to apy somone for it.
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I am sorry to hear that you did not like the runner size....
I was told that the MS3 which I Have will fit under a set of 2.5 5.3's w/o flycutting as long as the stock gaskets are used....
HOw can you check for PTV again? I am going to anyway for the hell of it...
Thanks
I was told that the MS3 which I Have will fit under a set of 2.5 5.3's w/o flycutting as long as the stock gaskets are used....
HOw can you check for PTV again? I am going to anyway for the hell of it...
Thanks