Trq2 vs 240/244 Dyno comparison and Question
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Trq2 vs 240/244 Dyno comparison and Question
Guys,
I've attached a couple of my Dyno graphs......one is with the Trq2, and the other is with a 240/244 114LSA....setup is a 408cu in with: Ported 243s(Patriot), 11.0:1 compression, LTs, true duals, BBK SSI intake, 80mm TB, Lvl5 4L60e, 3000 Vig, 255 walbro, 44lb injectors, custom tune.
The result of the cam/intake swap is: 361rwhp/345rwtq -to- 375rwhp/353rwtq...hmm....
Could I change the cam positioning to gain anything here?...the current events are:
IVO = 10 BTDC
IVC = 50ABDC
EVO = 60 BBDC
EVC = 4 ATDC
...the cam is advanced 4deg to get the above events....if I advance it another 2deg (i.e.- close the Intake Valve sooner) will it net more torque and/or power?....
What else should I do?...It seems like I should be getting more out of this setup...
I've attached a couple of my Dyno graphs......one is with the Trq2, and the other is with a 240/244 114LSA....setup is a 408cu in with: Ported 243s(Patriot), 11.0:1 compression, LTs, true duals, BBK SSI intake, 80mm TB, Lvl5 4L60e, 3000 Vig, 255 walbro, 44lb injectors, custom tune.
The result of the cam/intake swap is: 361rwhp/345rwtq -to- 375rwhp/353rwtq...hmm....
Could I change the cam positioning to gain anything here?...the current events are:
IVO = 10 BTDC
IVC = 50ABDC
EVO = 60 BBDC
EVC = 4 ATDC
...the cam is advanced 4deg to get the above events....if I advance it another 2deg (i.e.- close the Intake Valve sooner) will it net more torque and/or power?....
What else should I do?...It seems like I should be getting more out of this setup...
Last edited by Stroker2112; 12-24-2007 at 01:51 PM. Reason: trying to get attachments added
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Guys,
I've attached a couple of my Dyno graphs......one is with the Trq2, and the other is with a 240/244 114LSA....setup is a 408cu in with: Ported 243s(Patriot), 11.0:1 compression, LTs, true duals, BBK SSI intake, 80mm TB, Lvl5 4L60e, 3000 Vig, 255 walbro, 44lb injectors, custom tune.
The result of the cam/intake swap is: 361rwhp/345rwtq -to- 375rwhp/353rwtq...hmm....
Could I change the cam positioning to gain anything here?...the current events are:
IVO = 10 BTDC
IVC = 50ABDC
EVO = 60 BBDC
EVC = 4 ATDC
...the cam is advanced 4deg to get the above events....if I advance it another 2deg (i.e.- close the Intake Valve sooner) will it net more torque and/or power?....
What else should I do?...It seems like I should be getting more out of this setup...
I've attached a couple of my Dyno graphs......one is with the Trq2, and the other is with a 240/244 114LSA....setup is a 408cu in with: Ported 243s(Patriot), 11.0:1 compression, LTs, true duals, BBK SSI intake, 80mm TB, Lvl5 4L60e, 3000 Vig, 255 walbro, 44lb injectors, custom tune.
The result of the cam/intake swap is: 361rwhp/345rwtq -to- 375rwhp/353rwtq...hmm....
Could I change the cam positioning to gain anything here?...the current events are:
IVO = 10 BTDC
IVC = 50ABDC
EVO = 60 BBDC
EVC = 4 ATDC
...the cam is advanced 4deg to get the above events....if I advance it another 2deg (i.e.- close the Intake Valve sooner) will it net more torque and/or power?....
What else should I do?...It seems like I should be getting more out of this setup...
Last edited by JPH; 12-24-2007 at 02:03 PM.
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..the 243s are ported/flow 300fcm at a .600 lift...which isn't too bad(understand there are better ones out there)....and I understand the 90/90 logic..but it's not going to increase my numbers enough to match shift123's...(465rwhp/482rwtq)....that's a 90rwhp difference...the SSI intake should be very close to the LS6 intake's flow performance...there has to be something else going on. Would a Truck's drivetrain incur that much parasitic loss?
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#9
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You are WAY down on power. MY 01 Z06 made 465/422 with a set of ported ET LS6 heads that flowed 309@.600 and a HPE S Cam 238/242 .698/.612 115lsa cam. Mail order tune from Chuck @ HPE. That was all on a stock bottom end, fuel system, intake, TB, through a 6 speed although the Vettes IRS loses more than the Fbody solid. I did have the transmission internals polished but still you should be making way more with a 408.
The first time i dynoed my car only made 411rwhp on a dynojet and 2 weeks later broke a valve spring, had them all replaced (ET sent me an entire kit for free!) and re dynoed and made the 465rwhp on a mustnag dyno. Only changes were valve springs, the transmission internals being polished (by Randy at RPM) and TIRE PRESSURE. I dynoed the first time with 15psi in drag radials and pump them up to 32 the 2nd time. Tire pressure can have a huge effect on dynoes.
The first time i dynoed my car only made 411rwhp on a dynojet and 2 weeks later broke a valve spring, had them all replaced (ET sent me an entire kit for free!) and re dynoed and made the 465rwhp on a mustnag dyno. Only changes were valve springs, the transmission internals being polished (by Randy at RPM) and TIRE PRESSURE. I dynoed the first time with 15psi in drag radials and pump them up to 32 the 2nd time. Tire pressure can have a huge effect on dynoes.