Patriot 243 heads and Comp XER 224/228 111 +2
#1
Patriot 243 heads and Comp XER 224/228 111 +2
I installed my heads and cam last week. The Patriot 243 heads were just too good of a deal to pass up. Great quality and customer service as well...thanks Gunnar! I had them deck the heads to 62cc, and used .040" Cometics from Thunder Racing. The cam is a Comp XER 224/228 111 +2 (.581"/.588" lift) and the pushrods are 7.400". I have been following the advice of Patrick G and Predator-Z...this combination gave me the valve events and DCR that I was looking for. I added a LS6 intake, ported LS6 oil pump, LS2 timing chain, Powerbond underdrive pulley with ATI pin kit, and Meziere EWP with 160* thermostat. I already had a Vararam, ported stock throttle body, and descreened and ported MAF. I added American Racing 1 3/4" headers with off-road x-pipe to my existing Z06 Ti mufflers. I have been tuning the car with HP Tuners...the tune-up is still a work in progress, but the difference is night and day vs. stock! The swap went very well, thanks to the advice on LS1tech.com and instructions on LS1howto.com
Thanks,
Rob
Thanks,
Rob
#5
Originally Posted by N4cer
Screw the dyno. Let's see some track times!
#7
Originally Posted by LS1Aggie09
damn..track times would be nice as well...11.0 maybe?
Last edited by RAACCR; 12-27-2006 at 12:42 AM.
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#10
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Originally Posted by RAACCR
I installed my heads and cam last week. The Patriot 243 heads were just too good of a deal to pass up. Great quality and customer service as well...thanks Gunnar! I had them deck the heads to 62cc, and used .040" Cometics from Thunder Racing. The cam is a Comp XER 224/228 111 +2 (.581"/.588" lift) and the pushrods are 7.400". I have been following the advice of Patrick G and Predator-Z...this combination gave me the valve events and DCR that I was looking for........
#11
Originally Posted by Smitty's '04 GTO
How much did you mill the 243's to achieve 62cc?
Nice set up, have fun with it!
Nice set up, have fun with it!
I'm guessing around .020"ish? Gunnar could tell you exactly how much they need to mill them to get the chambers down to that size...I just asked for 62cc and he took care of it from there. (PTV clearance wasn't a concern for me since my cam isn't huge, so it wasn't critical for me to know the exact amount he cut 'em.)
#12
Originally Posted by bsf
What do/did you calculate your DCR to be? My un-milled Patriot LS6 heads and 0.045” Cometics are setting in a pile of performance parts. I am waiting on the 224/228 .581/.588 110+0 cam I ordered from Thunder Racing around Thanksgiving. Based on my calculations, using advertised specs for my stock engine and assuming 63.6cc chamber volume, I figured I would have a DCR of ~8.6. Actually, choosing a setup w/ that high of DCR makes me a little nervous.
Last edited by RAACCR; 12-27-2006 at 05:58 PM.
#13
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I guess I should be fine with my setup. I am not going for max effort. I have not decided whether I will pay for a dyno tune or buy hardware & software to do it myself. By any chance did you measure PTV clearance?
I am glad you started this thread. Congratulations on the success of your H/C job.
I am glad you started this thread. Congratulations on the success of your H/C job.
#16
Originally Posted by bsf
I guess I should be fine with my setup. I am not going for max effort. I have not decided whether I will pay for a dyno tune or buy hardware & software to do it myself. By any chance did you measure PTV clearance?
I am glad you started this thread. Congratulations on the success of your H/C job.
I am glad you started this thread. Congratulations on the success of your H/C job.
I bought the HP Tuners Professional Suite, and I'm very happy with it. I have never used any LSx series tuning software before, (although I have some background with DFI, Felpro/Speedpro/FAST), but it was very easy to figure out. I was able to copy a VE table from a file in their online tune repository, and tweaked everything else myself. Although I had zero prior experience, I had the car running very nicely within the first hour. I have mostly been working on fine tuning the driveability, and I'll move onto some wideband tuning shortly. But, with the online tools on the HP Tuners website, I'm proof that even a beginner can do it. Don't be afraid to be a do-it-yourself tuner.
Last edited by RAACCR; 12-27-2006 at 10:12 PM.
#17
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iTrader: (7)
Originally Posted by N4cer
8.6 makes you nervous? About what? 8.5-8.8 is the proper range, isn't it?
Before I bought my TA last summer, I could not have even explained what a camshaft was. I have been operating under the assumption that anything above 8.6 is approaching “eyebrow raising” territory.
#18
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Originally Posted by RAACCR
I bought the HP Tuners Professional Suite, and I'm very happy with it. I have never used any LSx series tuning software before, (although I have some background with DFI, Felpro/Speedpro/FAST), but it was very easy to figure out. I was able to copy a VE table from a file in their online tune repository, and tweaked everything else myself. Although I had zero prior experience, I had the car running very nicely within the first hour. I have mostly been working on fine tuning the driveability, and I'll move onto some wideband tuning shortly. But, with the online tools on the HP Tuners website, I'm proof that even a beginner can do it. Don't be afraid to be a do-it-yourself tuner.