Worked 243's worth the $$$$????
12-02-2009, 09:03 PM
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Worked 243's worth the $$$$???? I've got a set of 243's off an 04 Z06 that I am planning on throwing on my 98 SS. At this point I am considering having a competition 5 angle valve job done and hand blended to the chambers and ports. But for the $475 additional investment to do that which includes decking them for clean up purposes, I am wondering if the investment is really worth the gains. If I did, i'd have just over $900 into the the set not including springs- damn close to a set of full CNC PRC heads that would probably out flow these.
FYI I'm putting in a cam with the new heads, haven't spec'd one yet until I decide what to do with the head situation.
BTW, Flow numbers from someone that has done this to their stocker heads would be extremely helpful.
FYI I'm putting in a cam with the new heads, haven't spec'd one yet until I decide what to do with the head situation.
BTW, Flow numbers from someone that has done this to their stocker heads would be extremely helpful.
12-02-2009, 09:14 PM
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I've got a set of 243's off an 04 Z06 that I am planning on throwing on my 98 SS. At this point I am considering having a competition 5 angle valve job done and hand blended to the chambers and ports. But for the $475 additional investment to do that which includes decking them for clean up purposes, I am wondering if the investment is really worth the gains. If I did, i'd have just over $900 into the the set not including springs- damn close to a set of full CNC PRC heads that would probably out flow these.
FYI I'm putting in a cam with the new heads, haven't spec'd one yet until I decide what to do with the head situation.
BTW, Flow numbers from someone that has done this to their stocker heads would be extremely helpful.
FYI I'm putting in a cam with the new heads, haven't spec'd one yet until I decide what to do with the head situation.
BTW, Flow numbers from someone that has done this to their stocker heads would be extremely helpful.
12-02-2009, 10:28 PM
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Wanna buy a nice set of 243's?? JK, i'm not going to purchase another set of heads. My initial intent was to do a budget build, I don't disagree that PRC makes a great head for the $, just more $ than I have to spend. I'd still be cheaper than PRC if I move forward with the VJ and blend.
But would still like to see some flow data and/or dyno data to back up typical gains by doing comp VJ and hand blended. Note: I say "typical" gains, since there will be variances in blending and slightly in VJ.
But would still like to see some flow data and/or dyno data to back up typical gains by doing comp VJ and hand blended. Note: I say "typical" gains, since there will be variances in blending and slightly in VJ.
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12-03-2009, 10:06 AM
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What makes you think PRC doesn't know what their doing?? If you've got money to throw around, that's your choice (luxury), not everyone is in that situation though. I have not seen/heard any reason to prove that PRC products are not worth the money (little). So, if you've got some basis for your dislike of PRC, let's hear it.
12-03-2009, 03:44 PM
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Did I say you said they were bad? Nope. What I am saying though is I want the most "bang" for my buck, who wouldn't. Why spend more than you have to for the same result if possible, that's the point. So, back to the basic question that started this....Would the $475 be worth the gains??? Experience/proof of doing this would be essential-otherwise speculation.
12-03-2009, 04:07 PM
#12
Did I say you said they were bad? Nope. What I am saying though is I want the most "bang" for my buck, who wouldn't. Why spend more than you have to for the same result if possible, that's the point. So, back to the basic question that started this....Would the $475 be worth the gains??? Experience/proof of doing this would be essential-otherwise speculation.
12-03-2009, 04:16 PM
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to the OP your question really depends on who your spending the $475 with. just because 2 different places say your getting a 5 angle VJ does not mean your getting the same results. a knowledgable head guy will tell you the difference between an ok VJ and a good VJ can be 25+hp. spend your money wisely
12-03-2009, 04:36 PM
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just out of curiousity who would you use? to the OP your question really depends on who your spending the $475 with. just because 2 different places say your getting a 5 angle VJ does not mean your getting the same results. a knowledgable head guy will tell you the difference between an ok VJ and a good VJ can be 25+hp. spend your money wisely
to the OP your question really depends on who your spending the $475 with. just because 2 different places say your getting a 5 angle VJ does not mean your getting the same results. a knowledgable head guy will tell you the difference between an ok VJ and a good VJ can be 25+hp. spend your money wisely
12-03-2009, 05:24 PM
#15
just out of curiousity who would you use? to the OP your question really depends on who your spending the $475 with. just because 2 different places say your getting a 5 angle VJ does not mean your getting the same results. a knowledgable head guy will tell you the difference between an ok VJ and a good VJ can be 25+hp. spend your money wisely
to the OP your question really depends on who your spending the $475 with. just because 2 different places say your getting a 5 angle VJ does not mean your getting the same results. a knowledgable head guy will tell you the difference between an ok VJ and a good VJ can be 25+hp. spend your money wisely
12-03-2009, 08:25 PM
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If your gonna spend the $$$, go with a reputable shop. I don't have figures or numbers to back anything on VJ's, but if this local guy is the **** and has a good rep,then go with your gut. But if you look at TEA or AFR, proven shops who know their stuff, then YES, the $$$ will be well spent on quality work.
I just installed some 243s that I left stock, and got some really good gains. I could only imagine if I had them worked over what the additional gains would be.
I just installed some 243s that I left stock, and got some really good gains. I could only imagine if I had them worked over what the additional gains would be.
12-03-2009, 11:47 PM
#19
I have a friend who got a good deal on a set of 243s. He did some mild port work on them himself (he's no professional, but they "looked" good) and did just a head swap and went from 12.79@109 to 12.50@112 in slightly warmer weather. That was on a car with lid, ported TB, shorty headers, ORY, and an open Borla. So I would say that his home ported heads were easily worth 30+ rwhp on a bolt on car. Unported should gain around 20rwhp, or more on a cammed car.
12-04-2009, 07:30 AM
#20
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Jon96CRZ, what heads did your friend have on his car before the 243's? I'm coming from stock 806 castings, should get quite a kick in the pants even without additional work I think.
