Custom spec cam thoughts - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

morepowerjoe · 09-16-2022, 12:38 PM

Quote:

Originally Posted by PhantomBlack

I hit 425 on GPIs dyno. SS1 cam, stock heads, long tubes, and CAI.

I had the same set up SS1 and my tuner got out 438rwhp

PhantomBlack · 09-16-2022, 05:03 PM

Quote:

Originally Posted by morepowerjoe

I had the same set up SS1 and my tuner got out 438rwhp

Yeah these "baby cams" make some good power especially the low to mid-range.

OP I'm liking the 118 LSA and the -14 overlap. It should be pretty tame and stealthy.
I'm going to be putting in a BTR PDS stage 1 here soon (223/238 .610/585 120 LSA and -10 degrees overlap). I LOVE the chop of my SS1, but it's time for a change.

ss camaro-monte · 09-17-2022, 02:25 PM

Yeah, I was going to say 425rwhp for the ss1 is a little low but every dyno is different and the temperature outside I know from personal experience on a dyno can make a massive difference even on the same dyno same day. Early morning vs heat of afternoon.

GPI posted 457rwhp with the ss1 VVT but that had the ported rod mod/PTB and underdrive pulley which is probably worth 15-20rwhp in itself on top of that cam.
If I go the custom cam route I am hoping for 420-440rwhp with those added mods before ported heads but ported heads don't make a huge difference on small cams.
I know the tech at GPI told me the bigger the cam and higher the power band the more the engine can benefit from ported heads but a stock or small cam it doesn't get a huge jump in power. 10-15rwhp with a small cam is my guess as the LS3 stock castings flow pretty darn good for a small cam.

As much ported heads cost I am wondering if a basic nitrous system might be money better spent. A nice 75-125shot on top of that custom cam should get it over the 500rwhp mark but I assume a proper wet system must cost at least 3k for a shop to install?

I guess that is my next question. Anyone have a basic wet system installed for say a 100 shot? Nothing crazy.

ss camaro-monte · 09-17-2022, 03:23 PM

Parts are in. So far, ported rod mod, PTB, water pump and UDP under drive set up with crank bolt.

PhantomBlack · 09-17-2022, 04:34 PM

I've heard supposedly the 3.91 gears make the dyno reading a bit off. But I remember the first time flooring it, big smile from ear to ear.
The porting looks awesome BTW! I'm interested to see where you go with the cam choice.

ss camaro-monte · 09-17-2022, 04:48 PM

Yep, gears and or stall can drop hp on dyno. I dropped 16rwhp on the dyno on the same dyno in August instead of January with added a circle d 3200 stall. Texas thermal nuclear heat probably was most of it.lol
Tuner basically said chasing dyno numbers is just a gauge of the motor and the car sure as heck was faster with the stall regardless of what the dyno said. The stall was just as big as the tune, headers and cai together imo in the seat of your pants feel. Stall is #1 mod imo and mine is mild.

I will eventually do gears but not 3.91. I will either bite the bullet and do the LPE 3.70 or good old gm 3.45 and maybe eventually run a smaller wheel and tire but I think 3.70 is what I really want if I run all motor on a small cam and possibly nitrous if that ever happens. Stock gears and stall is already tire smoke without the built up rear suspension and drag radials on. I imagine at the drag strip 3.91 gear could present more of a challenge then it is worth but on a roll race I bet the 3.91 gear with a 2nd gear pull would be optimum for street pulls.

Bo White · 09-17-2022, 05:36 PM

Wouldn't worry with the gears. 1LEs dyno about the same numbers as manual SS'

09-17-2022, 03:23 PM	#18
ss camaro-monte Drives: 2015 camaro 2ss, 87 monte ss Join Date: Jun 2016 Location: Houston Posts: 241	Parts are in. So far, ported rod mod, PTB, water pump and UDP under drive set up with crank bolt. Attached Images

09-17-2022, 04:34 PM	#19
PhantomBlack Drives: 2014 Camaro 2SS Join Date: Oct 2017 Location: Brooksville, FL Posts: 181	I've heard supposedly the 3.91 gears make the dyno reading a bit off. But I remember the first time flooring it, big smile from ear to ear. The porting looks awesome BTW! I'm interested to see where you go with the cam choice. __________________ Mods: GPI SS1 VVT cam, TSP long tube headers, LSA conversion, ZL1 fuel pump, ADM FPCM, DW 700cc injectors, Lingenfelter solid isolator, Dedicated Motorsports ZL1 reinforced brick, ADM Griptech 2.5 pulley, JLT CAI, Phastek intake scoop, NPP cat-back, GM 3.91 gears, Eaton Truetrac, Tuned by Chris @ CHenry Motorsports.

09-17-2022, 05:36 PM	#21
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,019	Wouldn't worry with the gears. 1LEs dyno about the same numbers as manual SS' __________________ Retired wanna be cylinder head porter 2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X

09-17-2022, 02:25 PM	#17
ss camaro-monte Drives: 2015 camaro 2ss, 87 monte ss Join Date: Jun 2016 Location: Houston Posts: 241	Yeah, I was going to say 425rwhp for the ss1 is a little low but every dyno is different and the temperature outside I know from personal experience on a dyno can make a massive difference even on the same dyno same day. Early morning vs heat of afternoon. GPI posted 457rwhp with the ss1 VVT but that had the ported rod mod/PTB and underdrive pulley which is probably worth 15-20rwhp in itself on top of that cam. If I go the custom cam route I am hoping for 420-440rwhp with those added mods before ported heads but ported heads don't make a huge difference on small cams. I know the tech at GPI told me the bigger the cam and higher the power band the more the engine can benefit from ported heads but a stock or small cam it doesn't get a huge jump in power. 10-15rwhp with a small cam is my guess as the LS3 stock castings flow pretty darn good for a small cam. As much ported heads cost I am wondering if a basic nitrous system might be money better spent. A nice 75-125shot on top of that custom cam should get it over the 500rwhp mark but I assume a proper wet system must cost at least 3k for a shop to install? I guess that is my next question. Anyone have a basic wet system installed for say a 100 shot? Nothing crazy.

09-17-2022, 04:48 PM	#20
ss camaro-monte Drives: 2015 camaro 2ss, 87 monte ss Join Date: Jun 2016 Location: Houston Posts: 241	Yep, gears and or stall can drop hp on dyno. I dropped 16rwhp on the dyno on the same dyno in August instead of January with added a circle d 3200 stall. Texas thermal nuclear heat probably was most of it.lol Tuner basically said chasing dyno numbers is just a gauge of the motor and the car sure as heck was faster with the stall regardless of what the dyno said. The stall was just as big as the tune, headers and cai together imo in the seat of your pants feel. Stall is #1 mod imo and mine is mild. I will eventually do gears but not 3.91. I will either bite the bullet and do the LPE 3.70 or good old gm 3.45 and maybe eventually run a smaller wheel and tire but I think 3.70 is what I really want if I run all motor on a small cam and possibly nitrous if that ever happens. Stock gears and stall is already tire smoke without the built up rear suspension and drag radials on. I imagine at the drag strip 3.91 gear could present more of a challenge then it is worth but on a roll race I bet the 3.91 gear with a 2nd gear pull would be optimum for street pulls.