PRC 2.5 LS6 heads... your thoughts
03-06-2013, 09:07 PM
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PRC 2.5 LS6 heads... your thoughts Looking to step away from the factory heads on my 2000 and add a MS3 cam. Anyone running 2.5 heads? your thoughts/opinions and what kinda numbers are you hitting after the swap
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03-08-2013, 07:41 PM
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If you are gonna get the MS3, you should just go ahead and get the MS4. It will have the same peak power if not a little more and will have more low to mid range than the MS3. 470+ rwhp is certainly attainable, depending on your other mods. I agree with the above post, I would also consider the prc 225 as-cast head. 30rwhp over a stock ls6 in a cammed z06. There is a thread around somewhere wiith the graphs I think.
Last edited by leeluther252; 03-08-2013 at 07:46 PM.
03-08-2013, 07:51 PM
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What length pushrods you all running with the heads and ms4 or whatever setup you may have? id like to buy everything in one shot, not buy tools and then order pushrods... basically im asking someone to give me a good solid budget setup with what kinda numbers I could expect in the end.. just looking for good chop and globs of power, dont care about driveability, its turned into a weekend car
03-08-2013, 09:26 PM
#10
I have the ms3 and prc 2.5 ls6 combo, but haven't had it tuned and dynoed yet.
hit 389whp with stock 241 heads and ls6 intake (on my m6).
Buddies SS has same combo with fast intake in an automatic. Made 435whp.
With that being said, im hoping for 450whp (with bbk intake) after tune
hit 389whp with stock 241 heads and ls6 intake (on my m6).
Buddies SS has same combo with fast intake in an automatic. Made 435whp.
With that being said, im hoping for 450whp (with bbk intake) after tune
03-08-2013, 09:36 PM
#11
For just about the same money you can get the TSP as cast 225s that are superior to the stg 2.5 LS6 heads. Thicker deck, flow more, bigger valves etc etc. I talked to Aaron at TSP recently about the two heads, he said the As cast 225s are definetly the way to go if you can swing the 100 dollar difference. You might wanna check their website, I think they may be the same price now if you get the 225s with .650 beehives, although with an MS3 id spent the extra 100 bucks and get the .650 duals.
03-10-2013, 06:52 PM
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For just about the same money you can get the TSP as cast 225s that are superior to the stg 2.5 LS6 heads. Thicker deck, flow more, bigger valves etc etc. I talked to Aaron at TSP recently about the two heads, he said the As cast 225s are definetly the way to go if you can swing the 100 dollar difference. You might wanna check their website, I think they may be the same price now if you get the 225s with .650 beehives, although with an MS3 id spent the extra 100 bucks and get the .650 duals.
Yeah, I dont mind spending the extra, just want the correct setup, what length pushrods you running? did you change to LS7 lifters when you did your swap?
BBK intake... blahhhh
03-10-2013, 08:38 PM
#15
With this particular combo it does require a longer pushrod because of the aftermarket PRC cylinder head design. We always suggest customers measure but with this setup we typically recommend a 7.450 for the guys who want to go ahead and order a set of pushrods.
04-02-2013, 03:06 PM
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If you are gonna get the MS3, you should just go ahead and get the MS4. It will have the same peak power if not a little more and will have more low to mid range than the MS3. 470+ rwhp is certainly attainable, depending on your other mods. I agree with the above post, I would also consider the prc 225 as-cast head. 30rwhp over a stock ls6 in a cammed z06. There is a thread around somewhere wiith the graphs I think.
