2007 Z06 LS7 HPE Heads & Cam Results
12-13-2006, 08:51 AM
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2007 Z06 LS7 HPE Heads & Cam Results My mods:
1) HPE ported heads. Left the runner diameter stock, worked elsewhere in the bowl, ect. Milled to 67cc from 70cc.
Intake
.200/148 cfm .300/226 .400/300 .500/347 .600/ 383 .650/403
Exhaust
.200/132cfm .300/178 .400/220 .500/235 .600/243 .650/250
2) Spec'ed my own cam. XE-R lobed cam 242/248 110+4 .645"/.650", basically a TREX w/ 2 degrees more advance. HPE pushrods and PSI 1511 beehive springs.
3) Cometic .040 head gasket for LS7.
4) American Racing 1 7/8" headers w/ hi flow cats and x pipe.
5) Jeremy Formato ported intake manifold and HPE ported tb
6) Callaway Honker cold air intake
7) Tune by Chuck at HPE
SCR: 11.7:1 DCR 8.9:1
RWHP: 559 (452 stock)
RWTQ: 504 (424 stock) Dynojet
Power comes on really strong at 3000 and pulls to 6800 where it slightly dips to 7100. Exactly what I wanted. Sounds mean as hell. HPE are really good guys to deal with. Steven, Chuck and Josh thanks. I'll see if they can post the graph.
1) HPE ported heads. Left the runner diameter stock, worked elsewhere in the bowl, ect. Milled to 67cc from 70cc.
Intake
.200/148 cfm .300/226 .400/300 .500/347 .600/ 383 .650/403
Exhaust
.200/132cfm .300/178 .400/220 .500/235 .600/243 .650/250
2) Spec'ed my own cam. XE-R lobed cam 242/248 110+4 .645"/.650", basically a TREX w/ 2 degrees more advance. HPE pushrods and PSI 1511 beehive springs.
3) Cometic .040 head gasket for LS7.
4) American Racing 1 7/8" headers w/ hi flow cats and x pipe.
5) Jeremy Formato ported intake manifold and HPE ported tb
6) Callaway Honker cold air intake
7) Tune by Chuck at HPE
SCR: 11.7:1 DCR 8.9:1
RWHP: 559 (452 stock)
RWTQ: 504 (424 stock) Dynojet
Power comes on really strong at 3000 and pulls to 6800 where it slightly dips to 7100. Exactly what I wanted. Sounds mean as hell. HPE are really good guys to deal with. Steven, Chuck and Josh thanks. I'll see if they can post the graph.
Last edited by gtovan; 12-18-2006 at 11:26 PM.
12-13-2006, 12:13 PM
#6
Awesome power. Sounds like a strong power curve for a mild setup. Well done.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Last edited by Patrick G; 12-19-2006 at 08:07 AM.
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12-13-2006, 01:28 PM
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Originally Posted by blown2kss
Wow nice numbers on the heads, but what is the intake flowing after it was ported.
12-13-2006, 01:38 PM
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Maybe it' just me, but those #s don't seem fantastic. Headers, ported intake, ported TB, CAI alone should be worth an easy 50rwhp over stock....which means that the head porting/higher compression plus the cam and tune was only worth another 50rwhp?
Still a badass setup....just seems lower than what I would have expected.
Still a badass setup....just seems lower than what I would have expected.
12-13-2006, 01:47 PM
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Verbs,
Maybe not as high as some internet numbers, but these are real, got in the car and drove back home 250 miles 5 minutes after it made these numbers. Also, air filter was in, belts connected, cats, stock cat back and I think there may be some more left in the tune. It may do 57x with more tuning and a 3" cat back.
Maybe not as high as some internet numbers, but these are real, got in the car and drove back home 250 miles 5 minutes after it made these numbers. Also, air filter was in, belts connected, cats, stock cat back and I think there may be some more left in the tune. It may do 57x with more tuning and a 3" cat back.
12-13-2006, 01:55 PM
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Originally Posted by verbs
Maybe it' just me, but those #s don't seem fantastic. Headers, ported intake, ported TB, CAI alone should be worth an easy 50rwhp over stock....
In which world?
12-13-2006, 02:22 PM
#13
Originally Posted by gtovan
Sorry I didn't specify, those are after porting flow numbers.
Also, I think 560rwhp is a very good number for the mods. No cats/3" exhaust with tuning will easily hit 575rwhp. Take the advance out and possibly eclipse 580rwhp - or take the advance out and keep the cats and still hit 570+rwhp.
12-13-2006, 02:27 PM
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Originally Posted by JakeFusion™
I think he meant to ask what did the heads flow with the ported LS7 intake bolted to them.
Last edited by gtovan; 12-18-2006 at 11:15 PM.
12-13-2006, 02:46 PM
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Originally Posted by gtovan
Verbs,
Maybe not as high as some internet numbers, but these are real, got in the car and drove back home 250 miles 5 minutes after it made these numbers. Also, air filter was in, belts connected, cats, stock cat back and I think there may be some more left in the tune. It may do 57x with more tuning and a 3" cat back.
Maybe not as high as some internet numbers, but these are real, got in the car and drove back home 250 miles 5 minutes after it made these numbers. Also, air filter was in, belts connected, cats, stock cat back and I think there may be some more left in the tune. It may do 57x with more tuning and a 3" cat back.
I'm fairly new to the LS world, and when I saw some of the numbers that some people are claiming on the internet, I was amazed. I guess some of those claims are just that: numbers posted by bench racers. It's gets even worse on the import forums, where "a cat back exhaust and cold air intake can get you 500 RWHP" (even though it's a FWD car
)It's not that I don't believe these figures can be achieved, but a dyno graph speaks volumes. I'm just about to pop a very similar motor in my RX7, and I'm glad to see these horsepower and torque figures 
. Can't wait.
12-13-2006, 04:54 PM
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Originally Posted by gtovan
Verbs,
Maybe not as high as some internet numbers, but these are real, got in the car and drove back home 250 miles 5 minutes after it made these numbers. Also, air filter was in, belts connected, cats, stock cat back and I think there may be some more left in the tune. It may do 57x with more tuning and a 3" cat back.
Maybe not as high as some internet numbers, but these are real, got in the car and drove back home 250 miles 5 minutes after it made these numbers. Also, air filter was in, belts connected, cats, stock cat back and I think there may be some more left in the tune. It may do 57x with more tuning and a 3" cat back.
I know you just can't add them like that, but I've seen a few LS7's upgraded and dynoed in person, and have also seen others results. 40rwhp from cold air intake and headers alone is not abnormal for these cars.
12-13-2006, 06:10 PM
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that was a clueless post...you dont just combine gains together to get your total improvement.....
10rwhp intake plus 10 rwhp exhaust plus 5 rwhp TB does not equal 25 rwhp...... if it does you are a ricer!
10rwhp intake plus 10 rwhp exhaust plus 5 rwhp TB does not equal 25 rwhp...... if it does you are a ricer!
12-13-2006, 06:28 PM
#20
I'm somewhat with Verbs on this one. For me, it's because the upgrade to 400 cfm heads should seem to net better results. With some 402's hitting 550 rwhp with AFR 225's, one would think the ported LS7 upgrade should net closer to 600 rw. However, this is not a max effort car, and Im sure loosing a few creature comorts could bump the numbers a good bit. It should make for a "sleeper" grocery getter.