HP gain not what I expected!
Thread Starter
Teching In
Joined: Apr 2005
Posts: 22
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HP gain not what I expected! Ok background 2003 Z06 with Vararam intake, Kooks LT and High flow cats and X pipe, 160 degree thermo, American Motorsport wheels produced 369 rwhp and 355 rwtq on dyno at Maxwell Dodge.
Added Futural F13-112 Camshaft 230"/232" .595"/.585" 112LSA + 4 degrees advance built in and Patriot Heads LS6 style 59cc chamber, 2.02 intake and 1.57 exhaust, and tuning with no knock and 13.0:1 air/fuel across entire band. HPT Dyno shows 414 rwhp and 385 rwtq.
Net gain 45 rwhp and 30 rwtq. This does not seem right to me and I know that this is a different dyno between the two times. I would have expected this gain from just the cam. Others I have seen show around 450 rwhp and 325 rwtq. Is it just the dyno or is something else really wrong here?
Added Futural F13-112 Camshaft 230"/232" .595"/.585" 112LSA + 4 degrees advance built in and Patriot Heads LS6 style 59cc chamber, 2.02 intake and 1.57 exhaust, and tuning with no knock and 13.0:1 air/fuel across entire band. HPT Dyno shows 414 rwhp and 385 rwtq.
Net gain 45 rwhp and 30 rwtq. This does not seem right to me and I know that this is a different dyno between the two times. I would have expected this gain from just the cam. Others I have seen show around 450 rwhp and 325 rwtq. Is it just the dyno or is something else really wrong here?
Do you have any idea how well the motor is tuned? You should be higher with your power and torque, especially with 59cc chambers.
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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.
Thread Starter
Teching In
Joined: Apr 2005
Posts: 22
Likes: 0
0 degrees of knock and 13.0:1 Air Fuel ratio. He was making tuning adjustments after each run on the dyno. More fuel meant less hp, more timing made less hp, not sure he tried less fuel or not. He is a good tuner, he has done lots of different vettes, camaros and other forced induction vechiles.
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TECH Fanatic
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From: The point of no return...
Originally Posted by Ryan02SS
Budget heads make budget power. I found it out firsthand on my setup.
in my 04 Z06, i made 420 rwhp and 396 rwtq with a F13 on a 112+2 and my heads were never off the block. supporting mods were, lg pros, off road X pipe, S3 TB, pulley, halltech intake, prc springs, and stock exhaust. something is definetly not right.
TECH Apprentice
Joined: Sep 2005
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Originally Posted by am.mscl
the reason I choose Patriot was do to all the peoples comments on this forum about how great they are. So I choose the stage II LS6 style with the 59cc chambers.
maybe there is something else going on in the motor that your not seeing. Maybe it needs a basic tune up who knows all these cars are diff. I try not to go by dyno Numbers to much. Just take it to the track and see what it traps. If the car traps 112mph then you know that something isn't right.
all dynos are different. even though both were dynojets, one decimal point difference or different setting between the two can affect your readout dramaticly. take it back to the place you dyno'd the first time and see what that dyno says, then compare the two. always try to stick to the same dyno when you want to see what kind of difference you have made with your mods.
My buddy's '01 Z06 put down 423/408 with just a F-14 cam.
Something is going wrong in your setup. I'm with with Ryan02SS and WS-Sick: I've seen ****-poor results from many budget heads from a few vendors. I bet those heads aren't any better than your stock LS6 heads, regardless of the "magic" flow numbers.
Something is going wrong in your setup. I'm with with Ryan02SS and WS-Sick: I've seen ****-poor results from many budget heads from a few vendors. I bet those heads aren't any better than your stock LS6 heads, regardless of the "magic" flow numbers.
