poser cam.. - Page 2

BradfordCamaro · 03-25-2017, 08:09 PM

Article from a Comp Cam XFI Cam swap for 37hp. They added an intake for another 21hp.

oldman · 03-25-2017, 08:12 PM

OK when the acronnys go to 4 I don't understand Intake Valve Closed P I'm lost what is P?

PRAY · 03-25-2017, 08:14 PM

Quote:

Originally Posted by oldman

OK when the acronnys go to 4 I don't understand Intake Valve Closed P I'm lost what is P?

IVOPoint. I was typing what I was thinking. Sorry.

oldman · 03-25-2017, 08:17 PM

probably going to lose sone HP due to the tighter lobe (but gain some mid range torque), aslo with a stock intake lift (no valve springs) of .551 I'm sure the ramp profile would not be as aggressive. The cam is rated at producing power to 7100 but if you look at the final graph, peak HP is at about 6000 to 6100. It is the biggest AFM cam made and I think it is on a 118.5 LSA. Putting that down to 110 is going to a loopy cam... LOL is that a word?

PRAY · 03-25-2017, 08:17 PM

Quote:

Originally Posted by BradfordCamaro

Article from a Comp Cam XFI Cam swap for 37hp. They added an intake for another 21hp.

I will have to convert the math from .006" to .050" for the actual valve events. .006 doesn't compute in my .050 brain housing group.

BradfordCamaro · 03-25-2017, 08:17 PM

Quote:

Originally Posted by PRAY

IVOPoint. I was typing what I was thinking. Sorry.

I starting reading on IVOPoint....

I'm gonna grab a beer.

PRAY · 03-25-2017, 08:19 PM

Quote:

Originally Posted by oldman

probably going to lose sone HP due to the tighter lobe (but gain some mid range torque), aslo with a stock intake lift (no valve springs) of .551 I'm sure the ramp profile would not be as aggressive. The cam is rated at producing power to 7100 but if you look at the final graph, peak HP is at about 6000 to 6100. It is the biggest AFM cam made and I think it is on a 118.5 LSA. Putting that down to 110 is going to a loopy cam... LOL is that a word?

I was just projecting the math to put numbers to what everyone was talking about to give a real world reference of our conversation. You could run it on the 112 or 114 or what ever. There is just a set ICL for a given duration to get a targeted IVCP. That is all I was trying to demonstrate.

PRAY · 03-25-2017, 08:21 PM

Quote:

Originally Posted by BradfordCamaro

I starting reading on IVOPoint....

I'm gonna grab a beer.

In my book, it dictates all. The IVO/EVO/EVC are all important but secondary.

BradfordCamaro · 03-25-2017, 09:05 PM

Camshaft Math to Design Competitive Performance Engines
Dry - I need another Beer.

Reduce the LSA to 112 degrees with +6.

The Comp Cam XFI has a 57 Degree overlap for Intake/Exhaust 1 / 44 degree overlap Intake/Exhaust 2

glenB · 03-25-2017, 11:04 PM

If all they want is sound there are tuners that can give what's called a 'ghost cam' by fiddling with tune at idle.

03-25-2017, 08:09 PM	#15
BradfordCamaro SABIO Drives: 2016 CAMARO 1SS Join Date: Jul 2015 Location: Bradford, ON Posts: 5,014	Article from a Comp Cam XFI Cam swap for 37hp. They added an intake for another 21hp. Attached Images __________________

03-25-2017, 08:12 PM	#16
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,346	OK when the acronnys go to 4 I don't understand Intake Valve Closed P I'm lost what is P? __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.

03-25-2017, 08:17 PM	#18
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,346	probably going to lose sone HP due to the tighter lobe (but gain some mid range torque), aslo with a stock intake lift (no valve springs) of .551 I'm sure the ramp profile would not be as aggressive. The cam is rated at producing power to 7100 but if you look at the final graph, peak HP is at about 6000 to 6100. It is the biggest AFM cam made and I think it is on a 118.5 LSA. Putting that down to 110 is going to a loopy cam... LOL is that a word? __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.

03-25-2017, 09:05 PM	#23
BradfordCamaro SABIO Drives: 2016 CAMARO 1SS Join Date: Jul 2015 Location: Bradford, ON Posts: 5,014	Camshaft Math to Design Competitive Performance Engines Dry - I need another Beer. Reduce the LSA to 112 degrees with +6. The Comp Cam XFI has a 57 Degree overlap for Intake/Exhaust 1 / 44 degree overlap Intake/Exhaust 2 __________________ Last edited by BradfordCamaro; 03-25-2017 at 09:18 PM.

03-25-2017, 11:04 PM	#24
glenB Drives: Chevrolet Camaro SS Join Date: Mar 2015 Location: Planet Earth Posts: 721	If all they want is sound there are tuners that can give what's called a 'ghost cam' by fiddling with tune at idle.

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