Should I do a test on GTP heads?
Thread Starter
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From: Austin, TX
Should I do a test on GTP heads? I was wondering! A lot of people have made lots of good power with GTP heads! You may know I had some problems with ARE heads (they were robbing me some RWHP). But after MTI fixed the heads I got my rwhp to where it supposed to be! Anyway, should I get GTP heads? Can I make more than 450 RWHP just by changing to GTP heads? Or should I just stick with what I have? I want to test them out!
My ARE (MTI fixed heads) are flowing 290-295 CFM. How much does GTP heads flow?
So, can anyone lone me some GTP heads to test? <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<small>[ September 27, 2002, 10:33 AM: Message edited by: RUF SS ]</small>
My ARE (MTI fixed heads) are flowing 290-295 CFM. How much does GTP heads flow?
So, can anyone lone me some GTP heads to test? <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<small>[ September 27, 2002, 10:33 AM: Message edited by: RUF SS ]</small>
On The Tree
Joined: Nov 2001
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From: Dallas, TX
Re: Should I do a test on GTP heads? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by RUF SS:
<strong>I was wondering! A lot of people have made lots of good power with GTP heads! You may know I had some problems with ARE heads (they were robbing me some RWHP). But after MTI fixed the heads I got my rwhp to where it supposed to be! Anyway, should I get GTP heads? Can I make more than 450 RWHP just by changing to GTP heads? Or should I just stick with what I have? I want to test them out!
My ARE (MTI fixed heads) are flowing 290-295 CFM. How much does GTP heads flow?
So, can anyone lone me some GTP heads to test? <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What did MTI fix? Or did they just simply port them further?
<strong>I was wondering! A lot of people have made lots of good power with GTP heads! You may know I had some problems with ARE heads (they were robbing me some RWHP). But after MTI fixed the heads I got my rwhp to where it supposed to be! Anyway, should I get GTP heads? Can I make more than 450 RWHP just by changing to GTP heads? Or should I just stick with what I have? I want to test them out!
My ARE (MTI fixed heads) are flowing 290-295 CFM. How much does GTP heads flow?
So, can anyone lone me some GTP heads to test? <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What did MTI fix? Or did they just simply port them further?
Thread Starter
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From: Austin, TX
Re: Should I do a test on GTP heads? MTI changed the valves, the seats, the springs, and retainers.
ARE use weird valves lengths and bad spring setup. The springs were hurting my heads because there were no seats for the springs too!! Now that made me really mad!!! But thank God that I did not give up in finding the problem, so I caught it in the time before it made any serous damage!
ARE satge 2 heads flowed 270-275 CFM
After MTI fixed the heads the flowed 290-295 CFM
ARE use weird valves lengths and bad spring setup. The springs were hurting my heads because there were no seats for the springs too!! Now that made me really mad!!! But thank God that I did not give up in finding the problem, so I caught it in the time before it made any serous damage!
ARE satge 2 heads flowed 270-275 CFM
After MTI fixed the heads the flowed 290-295 CFM
Re: Should I do a test on GTP heads? I think you would make some incredible gains with GTP, TEA, JPR, MTI, FMS, Jantzer, MMS, LGM, Cartek, etc.. I hope that ARE will start putting out a good product again now that they are under new management. For now you just have to decide if the change is worth another 15 to 30rwhp..
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Re: Should I do a test on GTP heads? If those heads are just ARE portwork, you will definately pick up with some GTP heads. His standard stage 2s will be fine for your stock bore motor.
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Re: Should I do a test on GTP heads? YES PLEASE DO!!!!
I also have a 382 stroker and am getting heads in the next couple months. I'd love to see some results of TEA or GTP heads!!!
I'd say GTP or TEA would flow in the 300-310 range and you'd pick up about 10rwhp peak and quite and more in the low and mid range.
<small>[ September 27, 2002, 11:03 AM: Message edited by: 383ss ]</small>
I also have a 382 stroker and am getting heads in the next couple months. I'd love to see some results of TEA or GTP heads!!!
I'd say GTP or TEA would flow in the 300-310 range and you'd pick up about 10rwhp peak and quite and more in the low and mid range.
<small>[ September 27, 2002, 11:03 AM: Message edited by: 383ss ]</small>
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Brett Foote Thread Starter
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From: Austin, TX
Re: Should I do a test on GTP heads? I am using 2.08 in. and 1.60 ex. I have no idea what MTI use for there heads. But I have what ever they are using in there setups!
If I could be in the 465+ rwhp from the heads swap! That would be very cool!
If I could be in the 465+ rwhp from the heads swap! That would be very cool!
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From: Los Angeles
Re: Should I do a test on GTP heads? Ruf, a few things
1) I have flow sheets of my ARE heads flowed on the same bench as my GTP heads. Email me for the jpg.
2) My ARE heads didnt have proper spring seats either, and the spring pressure was setup very low for the very heavier valves they installed in my heads (new springs are being setup on them now for the next owner, along with seats).
3) I bet you will gain power from GTP heads. You can even send your ARE ones back to thunder racing to have them flow tested against your new heads if you decide to do this (like I did).
1) I have flow sheets of my ARE heads flowed on the same bench as my GTP heads. Email me for the jpg.
2) My ARE heads didnt have proper spring seats either, and the spring pressure was setup very low for the very heavier valves they installed in my heads (new springs are being setup on them now for the next owner, along with seats).
3) I bet you will gain power from GTP heads. You can even send your ARE ones back to thunder racing to have them flow tested against your new heads if you decide to do this (like I did).
Thread Starter
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Joined: Jan 2002
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From: Austin, TX
Re: Should I do a test on GTP heads? jmx,
your email does not show!
I just sent you a PM.
You could send me the flow #s to
talqattan@austin.rr.com
Thanks!
your email does not show!
I just sent you a PM.
You could send me the flow #s to
talqattan@austin.rr.com
Thanks!
Re: Should I do a test on GTP heads? JMX / Ruf SS
Did you guys have the older or newer set of ARE's heads?
There were some changes made to the valves, and the springs I believe for the older vs newer.
It would be helpful for some preventive maintenance. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Thanks in advance.
<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Did you guys have the older or newer set of ARE's heads?
There were some changes made to the valves, and the springs I believe for the older vs newer.
It would be helpful for some preventive maintenance. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Thanks in advance.
<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
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From: Los Angeles
Re: Should I do a test on GTP heads? Our heads were ordered over a year ago now so they are probably the older ones. Mine are at thunder racing now getting setup correctly so the next owner wont have high rpm problems like I did. <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />
Re: Should I do a test on GTP heads? I think new heads would be worth it.
MTI, TEA, GTP, JPR and maybe RGR I'd consider. I think you should talk with each shop about your application. With your extra cubes an LS6 head might be worth considering as the right building block for your new package.
MTI, TEA, GTP, JPR and maybe RGR I'd consider. I think you should talk with each shop about your application. With your extra cubes an LS6 head might be worth considering as the right building block for your new package.
Re: Should I do a test on GTP heads? If you are flowing 290 at .550 that's pretty decent. I'd look at the exhaust flow side. The ARE heads seem to be weaker in the exhaust. With ARE heads, the split duration cams make more power. I'd swap out the reverse split for 230/236 or similar cam of your choice with 4 - 6 degrees of extra duration on the exhaust side. A 230/236 will probably get 10 - 20 HP over your current cam and cost a lot less than heads.
Re: Should I do a test on GTP heads? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by VINCE:
<strong>I hope that ARE will start putting out a good product again now that they are under new management. For now you just have to decide if the change is worth another 15 to 30rwhp..</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What happened at ARE?
Why new management at ARE?
I read they changed to a 25% restock fee but didn't see anything else on their website.
<strong>I hope that ARE will start putting out a good product again now that they are under new management. For now you just have to decide if the change is worth another 15 to 30rwhp..</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What happened at ARE?
Why new management at ARE?
I read they changed to a 25% restock fee but didn't see anything else on their website.
Re: Should I do a test on GTP heads? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> Why new management at ARE?
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">
I believe that Wade has taken the shop over as Nick plans to concentrate more on racing.
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">
I believe that Wade has taken the shop over as Nick plans to concentrate more on racing.