Camshaft in a week, your guess at dyno numbers - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

4RD H8R · 03-17-2011, 08:12 PM

OK everybody, time for a little game of guess the numbers! Here is what we have to work with.
Mods to the car last dyno. LS3 with Solo cats, 2 1/2" x pipe and flowmasters. Result in not so great air 386/386 on same dyno car is about to go back on. (i will have new dyno before cam for as close to apples to apples as possible)
Only change since is the addition of a CAI cold air kit. A reasonable gues for current numbers in a little better air with cold air box would be around 400-405 I would guess. Car has run 12.54 @112 at about 1200 DA.

Now for the tricky part.

I came across a good deal on a new G6X3. Cam and tune are the only things being added (other than supporting springs, pushrods, upper gear, etc). The car will NOT have headers installed at this time. So all mods will be G6X3, Solo cats, xpipe, flowmasters, cutom tune. So how much will it make without headers? How much will manifolds kill it...or will they? I know some will think I am stupid, crazy, or both. Maybe so, but I'm gonna find out.

csjcsj · 03-17-2011, 08:17 PM

I say 440! My vote is in! Get those headers and open it up and you probably hit 460 or so!

RAYSRT8 · 03-17-2011, 08:23 PM

440 - 450 and around 470 with headers.

mikeSS · 03-17-2011, 08:23 PM

i remember the thread you made with the 3 choices. i voted for headers. but getting a cam is still good, and i understand why you would want one. a lot of shops will highly recommend getting headers with a cam. i gained about 20WHP from high flow cats to headers. and i had a dyno tune with the cats. cams work really well with headers so it might be even more then 20 idk. i would see what most people are making with that cam, headers, CAI, and tune. and minus 20WHP

BLACK10 · 03-17-2011, 09:12 PM

i seriously doubt you will hit 410rwhp with out headers. the motor will be choking up trying to get rid of the spent gasses.

mikeSS · 03-17-2011, 09:29 PM

Quote:

Originally Posted by BLACK10

i seriously doubt you will hit 410rwhp with out headers. the motor will be choking up trying to get rid of the spent gasses.

thats what i was thinking.

4RD H8R · 03-17-2011, 09:29 PM

Quote:

Originally Posted by BLACK10

i seriously doubt you will hit 410rwhp with out headers. the motor will be choking up trying to get rid of the spent gasses.

You may be right but if I don't mae more than 410, I won't just be crying on the inside, It'll be on the outside too! I think that numbe is 35 to40 low, at least I hopeso. Only one way to find out! Can't wait for next Thursday late or Friday morning!

Ovenmitt · 03-17-2011, 09:33 PM

436 rwhp. Gonna be hurting without headers.

4RD H8R · 03-17-2011, 09:35 PM

Quote:

Originally Posted by mikeSS

thats what i was thinking.

If I'm at 410, than I guess I'll be making about 60 less than cars with similar mods with the headers instead of 20 or so.

reedster20 · 03-17-2011, 09:36 PM

440

mikeSS · 03-17-2011, 09:38 PM

Quote:

Originally Posted by 4RD H8R

If I'm at 410, than I guess I'll be making about 60 less than cars with similar mods with the headers instead of 20 or so.

ya i am no expert. just sharing what happen when i switched from high flow cats to LTs.

BLACK10 · 03-17-2011, 09:39 PM

well, i installed a cam and made them dyno it without headers first and it only made about 10rwhp than i had before the cam. the dyno sheet looked crazy. let me see if i can find it and i will post a pick.

BLACK10 · 03-17-2011, 09:40 PM

btw, once the headers were on and it was tuned again it made almost 40rwhp more. without the headers it didnt gain much power at all.

4RD H8R · 03-17-2011, 09:45 PM

I guess we'll find out in a week. I hope it makes good numbers.I just don't think the maniforlds are that horrible. Not as good as long tubes but more along the line of shortys.

03-17-2011, 08:12 PM	#1
4RD H8R Beating 5.0's since 1988 Drives: 2010 RS SS M6 Join Date: Jun 2010 Location: Buford, Ga. Posts: 525	Camshaft in a week, your guess at dyno numbers OK everybody, time for a little game of guess the numbers! Here is what we have to work with. Mods to the car last dyno. LS3 with Solo cats, 2 1/2" x pipe and flowmasters. Result in not so great air 386/386 on same dyno car is about to go back on. (i will have new dyno before cam for as close to apples to apples as possible) Only change since is the addition of a CAI cold air kit. A reasonable gues for current numbers in a little better air with cold air box would be around 400-405 I would guess. Car has run 12.54 @112 at about 1200 DA. Now for the tricky part. I came across a good deal on a new G6X3. Cam and tune are the only things being added (other than supporting springs, pushrods, upper gear, etc). The car will NOT have headers installed at this time. So all mods will be G6X3, Solo cats, xpipe, flowmasters, cutom tune. So how much will it make without headers? How much will manifolds kill it...or will they? I know some will think I am stupid, crazy, or both. Maybe so, but I'm gonna find out. __________________ Beating the crap out of my Camaros for 23+ years 1973, 1970 1/2, 1979, 1968, 1971, 2010

03-17-2011, 08:17 PM	#2
csjcsj Drives: 2010 Camaro SS/RS 6spd Join Date: Sep 2009 Location: Jefferson, Ga Posts: 4,399 View My Garage	I say 440! My vote is in! Get those headers and open it up and you probably hit 460 or so! __________________

03-17-2011, 08:23 PM	#3
RAYSRT8 Drives: 2011 Challenger SRT8 6.4L 392 Hemi Join Date: Jul 2010 Location: Smyrna, TN Posts: 778 View My Garage	440 - 450 and around 470 with headers. __________________ 2011 Stock 6.4L 392 Hemi Challenger Flowmaster American Thunder Series Cat Back Camaro parts for sale: http://www.camaro5.com/forums/showthread.php?t=152474

03-17-2011, 09:45 PM	#14
4RD H8R Beating 5.0's since 1988 Drives: 2010 RS SS M6 Join Date: Jun 2010 Location: Buford, Ga. Posts: 525	I guess we'll find out in a week. I hope it makes good numbers.I just don't think the maniforlds are that horrible. Not as good as long tubes but more along the line of shortys. __________________ Beating the crap out of my Camaros for 23+ years 1973, 1970 1/2, 1979, 1968, 1971, 2010

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03-17-2011, 08:23 PM	#4
mikeSS Drives: 2015 c7 Join Date: Nov 2009 Location: MI Posts: 7,462	i remember the thread you made with the 3 choices. i voted for headers. but getting a cam is still good, and i understand why you would want one. a lot of shops will highly recommend getting headers with a cam. i gained about 20WHP from high flow cats to headers. and i had a dyno tune with the cats. cams work really well with headers so it might be even more then 20 idk. i would see what most people are making with that cam, headers, CAI, and tune. and minus 20WHP

03-17-2011, 09:12 PM	#5
BLACK10 Drives: 2010 CAMARO. 10.04@133mph, 1.4 60' Join Date: Jul 2009 Location: Lafayette, Louisiana Posts: 4,585	i seriously doubt you will hit 410rwhp with out headers. the motor will be choking up trying to get rid of the spent gasses.

03-17-2011, 09:33 PM	#8
Ovenmitt Account Suspended Drives: 2011 RJT 1SS Join Date: Apr 2010 Location: Fort Lewis, Washington Posts: 730	436 rwhp. Gonna be hurting without headers.

03-17-2011, 09:36 PM	#10
reedster20 Drives: 2010 Camaro 2SS/RS LS3 Join Date: Nov 2010 Location: Midland, TX Posts: 128	440

03-17-2011, 09:39 PM	#12
BLACK10 Drives: 2010 CAMARO. 10.04@133mph, 1.4 60' Join Date: Jul 2009 Location: Lafayette, Louisiana Posts: 4,585	well, i installed a cam and made them dyno it without headers first and it only made about 10rwhp than i had before the cam. the dyno sheet looked crazy. let me see if i can find it and i will post a pick.

03-17-2011, 09:40 PM	#13
BLACK10 Drives: 2010 CAMARO. 10.04@133mph, 1.4 60' Join Date: Jul 2009 Location: Lafayette, Louisiana Posts: 4,585	btw, once the headers were on and it was tuned again it made almost 40rwhp more. without the headers it didnt gain much power at all.