PRAY Performance Cam gains 75/23rw. 562/500rw.

PRAY · 10-14-2017, 12:57 PM

Got back on my normal dyno today. I was running into some TM things and it limited me a little bit. I need to work my TQ Coefficients again. I also didn't have time to start moving my injector timing back towards stock to see if that helped anything. It is retarded right now. I know there was more in there cause it put down 547/478rw in 5th. I ALWAYS get a 23-25rw bump from 5th to 6th. Didn't see that this time. Total gains 189/111rw so far. Still SBE.

Graph one is stock vs. bolt on/Heads vs. H/C now.

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Graph two is just heads vs. H/C.

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And H/C alone.

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BradfordCamaro · 10-14-2017, 01:15 PM

Impressive

Cam doesn't kick in until 5000rpm.
Why is that?

PRAY · 10-14-2017, 01:20 PM

Quote:

Originally Posted by BradfordCamaro

Impressive

Cam doesn't kick in until 5000rpm.
Why is that?

It's up 12-15rw from 3,500to 4,200. Then it takes back off at 4,700. So there is a gain there even though it is ever so slight. I didn't get the compression I wanted out of this thing. That is definitely hurting down low. It could also be that I am exceeding my tq tables greatly down low and only slightly up top. I also designed this cam with going 9's as the single goal. I did think I would see a solid 20rwtq bump across the board but I just didn't get it. I wouldn't change anything though.

Immoralus · 10-14-2017, 02:00 PM

Great news! Impressive as always man. Wish you were closer so I could get in on some of these gains lol.

ag1leSS · 10-14-2017, 03:03 PM

What's SBE stand for?

Glad you're close to me if I decide to Ultimately do a all motor road race setup.

PRAY · 10-14-2017, 03:05 PM

Quote:

Originally Posted by ag1leSS

What's SBE stand for?

Stock Bottom End.

KingLT1 · 10-14-2017, 06:50 PM

Nice results!!

PRAY · 10-14-2017, 07:02 PM

Thanks guys.

Looking at the graphs some more I have come to the conclusion that the bump where the tq curves meet is due to the whole curve is shifted right about 750rpm which makes perfect sense.

parish8 · 10-14-2017, 07:40 PM

very impressive, cant wait to see what it runs. I look at the et and mph some of you na guys are running and am just blown away.

PRAY · 10-14-2017, 07:54 PM

I am thinking it will go 9.9 maxed out. 107 in the 1/8 and 135 in the 1/4. Time to work on the car now. I don't think I am going to get much more put of the motor. I wish I would have done a better job with the fly cutting. There is still more porting to be done in the IM and heads as well. I am also reworking my PCV system. I would really like to squeeze another 10rw out of this thing.

2000form · 10-15-2017, 07:50 AM

Those are some impressive numbers. If you trap 135 that would be crazy.

PRAY · 10-15-2017, 08:06 AM

Quote:

Originally Posted by 2000form

Those are some impressive numbers. If you trap 135 that would be crazy.

I am sure it will take a 26" tire and some weight reduction and negative DA but all three of those things are easily done. Winter is rapidly approaching so the weather should start looking good. HPT also just released a bunch of converter tables we have been missing. There should be some more mph in there once I figure Thise out. But I am more than willing to sacrifice mph for ET up front. The next couple months are going to be very interesting.

T-Man · 10-15-2017, 11:51 AM

Pretty impressive

DFW1LE · 10-15-2017, 12:02 PM

I really cannot imagine any H/C package yielding a larger net gain than your package did. Brett, although I am not sure you ever tested this, in all the testing you have done or heard about, do you have any idea how much a catted car loses vs non-catted (e.g. 10-12 hp)?

10-14-2017, 12:57 PM	#1
PRAY Drives: 2016 2SS Join Date: Jul 2016 Location: Sanford NC Posts: 2,766	PRAY Performance Cam gains 75/23rw. 562/500rw. Got back on my normal dyno today. I was running into some TM things and it limited me a little bit. I need to work my TQ Coefficients again. I also didn't have time to start moving my injector timing back towards stock to see if that helped anything. It is retarded right now. I know there was more in there cause it put down 547/478rw in 5th. I ALWAYS get a 23-25rw bump from 5th to 6th. Didn't see that this time. Total gains 189/111rw so far. Still SBE. Graph one is stock vs. bolt on/Heads vs. H/C now. Graph two is just heads vs. H/C. And H/C alone. __________________ 2016 2SS. H/C SBE 1.37 60ft, 6.36@109.49, 9.97@136+. Nuff Said.

10-14-2017, 01:15 PM	#2
BradfordCamaro SABIO Drives: 2016 CAMARO 1SS Join Date: Jul 2015 Location: Bradford, ON Posts: 5,012	Impressive Cam doesn't kick in until 5000rpm. Why is that? __________________

10-14-2017, 06:50 PM	#7
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 7,559	Nice results!! __________________ 2016 NFG SS A8/Whipple 2.9/Fuel System/Flex Fuel

10-14-2017, 07:02 PM	#8
PRAY Drives: 2016 2SS Join Date: Jul 2016 Location: Sanford NC Posts: 2,766	Thanks guys. Looking at the graphs some more I have come to the conclusion that the bump where the tq curves meet is due to the whole curve is shifted right about 750rpm which makes perfect sense. __________________ 2016 2SS. H/C SBE 1.37 60ft, 6.36@109.49, 9.97@136+. Nuff Said.

10-14-2017, 07:40 PM	#9
parish8 Drives: 17 SS a8 Join Date: Feb 2010 Location: omaha Posts: 1,678	very impressive, cant wait to see what it runs. I look at the et and mph some of you na guys are running and am just blown away. __________________ dropped a valve in the 6.2. now running a drop in rods and piston 5.3 best et 5.83@121 with the 5.3 http://www.camaro6.com/forums/showthread.php?t=465472

10-14-2017, 02:00 PM	#4
Immoralus Drives: 2017 Camaro 1SS A8 Join Date: Jan 2017 Location: Euphrasia Posts: 88	Great news! Impressive as always man. Wish you were closer so I could get in on some of these gains lol.

10-14-2017, 03:03 PM	#5
ag1leSS Drives: 17 Hyper Blue SS 1LE Join Date: Aug 2017 Location: 423 Tennessee Posts: 89	What's SBE stand for? Glad you're close to me if I decide to Ultimately do a all motor road race setup.

10-14-2017, 07:54 PM	#10
PRAY Drives: 2016 2SS Join Date: Jul 2016 Location: Sanford NC Posts: 2,766	I am thinking it will go 9.9 maxed out. 107 in the 1/8 and 135 in the 1/4. Time to work on the car now. I don't think I am going to get much more put of the motor. I wish I would have done a better job with the fly cutting. There is still more porting to be done in the IM and heads as well. I am also reworking my PCV system. I would really like to squeeze another 10rw out of this thing. __________________ 2016 2SS. H/C SBE 1.37 60ft, 6.36@109.49, 9.97@136+. Nuff Said.

10-15-2017, 07:50 AM	#11
2000form Drives: 2000 pontiac formula Join Date: Dec 2015 Location: palm beach gardens Posts: 105	Those are some impressive numbers. If you trap 135 that would be crazy.

10-15-2017, 11:51 AM	#13
T-Man Drives: 09 Cobalt SS Sedan Join Date: Sep 2016 Location: Arizona Posts: 32	Pretty impressive

10-15-2017, 12:02 PM	#14
DFW1LE Drives: 2017 SS 1LE Mosiac Black Join Date: Nov 2016 Location: DFW, TX Posts: 1,132	I really cannot imagine any H/C package yielding a larger net gain than your package did. Brett, although I am not sure you ever tested this, in all the testing you have done or heard about, do you have any idea how much a catted car loses vs non-catted (e.g. 10-12 hp)?

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