stroker gas mileage - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

myold88 · 07-06-2022, 05:27 PM

After reading all of these I'm glad I left my '10 SS L99 stock. Always get about 16 local
and 24-25 on the Interstates if little traffic. After 13 years I don't really check anymore.

jcampos · 07-10-2022, 10:46 AM

Quote:

Originally Posted by morepowerjoe

Hey guys so I'm thinking that I'm getting ready to do a full rebuild pretty soon and was thinking of going with a 415 stroker and was wondering if the gas mileage will go out the window? And I think I might go with the GPI SS3 vvt with around a 3200-3600 stall converter but not sure I might just go with a small enough cam to run the stock converter like my current SS1 but I will be doing a tranny rebuild as well.

Just for reference my car is getting anywhere between 150-180 miles per tank. I have a gpi stage 4 cam, gpi ported heads with the works, LT headers and straight pipe, lsxhr intake manifold, LSA injectors and tuned on 93 and all supporting mods... Lol it's pretty terrible but fun

Danial · 07-10-2022, 10:58 AM

Quote:

Originally Posted by myold88

After reading all of these I'm glad I left my '10 SS L99 stock. Always get about 16 local
and 24-25 on the Interstates if little traffic. After 13 years I don't really check anymore.

With the exception of exhaust, mine is bone-stock as well and I have never seen anything higher than 17.8 mpg no matter where or how I drive. I'm beginning to think it's a sending unit issue.

Heads-up · 08-01-2022, 08:08 AM

I got around 24 driving all interstate at 80 with the car stock. That's with 5 miles or so of driving in town and then running highway until I needed fuel.

After I turned of AFM off, added headers and CAI, I got around 22-23 doing the same trip.

Added 3.73 gears and I get 21 ish. Any full throttle acceleration and it goes down fast.

I still get around 14-15 in town if I'm not idling a lot at stop lights.

morepowerjoe · 08-01-2022, 08:42 AM

I'm now concerned about my fueling. I'm expecting around 475 whp should I be considering a fuel pump and injectors?

acammer · 08-01-2022, 12:51 PM

Quote:

Originally Posted by morepowerjoe

I'm now concerned about my fueling. I'm expecting around 475 whp should I be considering a fuel pump and injectors?

You've got some headroom left. When my car was around similar power I was about 75% injector duty cycle and would hold a solid 50psi I pressure into the 7000+RPM range. With the new setup making 550whp I was worried about running out of injector so I've got some 850s in there now. Still hangs at right about 50psi on fuel pressure. The 850s are about 40% duty cycle, which tells me the stock 440cc injectors would have likely got the job done.

morepowerjoe · 08-01-2022, 12:53 PM

Thanks buddy!

Pkeen · 08-01-2022, 06:18 PM

I'm getting 15mpg combined !

morepowerjoe · 08-01-2022, 06:31 PM

Quote:

Originally Posted by Pkeen

I'm getting 15mpg combined !

That doesn't sound too bad! With my current set up I'm getting about the same thing.

DavidH · 08-03-2022, 12:38 PM

Dang...I guess I need to quit worrying about my mileage. I'm averaging 19.8 with mixed driving and 5-10 minutes of idle time every morning. Long trips I've seen it up closer to 24mpg.

Granted I'm completely stock aside from a muffler delete ��

*SSE 4 2SS* · 08-06-2022, 01:19 AM

If I babied her, with the A/C off (I don’t actually have A/C), in South Texas, I could eek out about 3 mpg… on C-16 race fuel…

On a mile long full send, I burned through 5 gallons of fuel…

I admit, she was kinda peppy… and thirsty…

417 CI, Solid Billet Cam, 10.5 : 1 compression ratio… roughly 27-35 lbs of boost… 225 lb/hr injectors…

morepowerjoe · 08-06-2022, 01:30 AM

Quote:

Originally Posted by SSE 4 2SS

If I babied her, with the A/C off (I don’t actually have A/C), in South Texas, I could eek out about 3 mpg… on C-16 race fuel…

On a mile long full send, I burned through 5 gallons of fuel…

I admit, she was kinda peppy… and thirsty…

417 CI, Solid Billet Cam, 10.5 : 1 compression ratio… roughly 27-35 lbs of boost… 225 lb/hr injectors…

Holy hell, 3 mpg?

Chris49066SS · 08-06-2022, 09:31 AM

Quote:

Originally Posted by SSE 4 2SS

If I babied her, with the A/C off (I don’t actually have A/C), in South Texas, I could eek out about 3 mpg… on C-16 race fuel…

On a mile long full send, I burned through 5 gallons of fuel…

I admit, she was kinda peppy… and thirsty…

417 CI, Solid Billet Cam, 10.5 : 1 compression ratio… roughly 27-35 lbs of boost… 225 lb/hr injectors…

Into the GPM territory instead of MPG, I would expect no less from that 9000+ RPM monster!

acammer · 08-06-2022, 03:57 PM

The most important measurement is SPG - smiles per gallon. Ain't seen a Prius touch my car for that yet!

07-06-2022, 05:27 PM	#29
myold88 Drives: SUMMIT WHITE 2SS/RS CAMARO Join Date: Feb 2008 Location: 2018: Lakewood Ranch, Fl. Posts: 8,112 View My Garage	After reading all of these I'm glad I left my '10 SS L99 stock. Always get about 16 local and 24-25 on the Interstates if little traffic. After 13 years I don't really check anymore. __________________

08-01-2022, 08:42 AM	#33
morepowerjoe Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020 Location: Austin, TX Posts: 2,103	I'm now concerned about my fueling. I'm expecting around 475 whp should I be considering a fuel pump and injectors? __________________ DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer Build Thread https://www.camaro5.com/forums/showthread.php?t=609817

08-01-2022, 12:53 PM	#35
morepowerjoe Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020 Location: Austin, TX Posts: 2,103	Thanks buddy! __________________ DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer Build Thread https://www.camaro5.com/forums/showthread.php?t=609817

08-01-2022, 06:18 PM	#36
Pkeen Drives: 2010 Camaro 2ss/rs, 2008 Avalanche Join Date: Jan 2019 Location: Lake Pannasoffkee,Florida Posts: 246	I'm getting 15mpg combined ! __________________ 2010 Rally Yellow 2ss/rs , M6 ,416ci , K1 rods & crank,weisco -3.0cc dome pistons,.040 head gasket, 11.5 compression,1 3/4" LT ,3" pipes w/x-pipe no cats, Cam Motion cam 239/247 113+3 .621"/604" lift , BTR .660 Platinum dual springs w/Titanium retainers, CAI . Stock ls3 heads,intake,injectors & TB. 515rwhp/500rwtq.

08-06-2022, 01:19 AM	#39
SSE 4 2SS Boosted Moderator Drives: Bone Stock LS3 Join Date: Sep 2009 Location: Marion Tx Posts: 15,491	If I babied her, with the A/C off (I don’t actually have A/C), in South Texas, I could eek out about 3 mpg… on C-16 race fuel… On a mile long full send, I burned through 5 gallons of fuel… I admit, she was kinda peppy… and thirsty… 417 CI, Solid Billet Cam, 10.5 : 1 compression ratio… roughly 27-35 lbs of boost… 225 lb/hr injectors… __________________ If the car feels like it is on rails, you are probably driving too slow. -Ross Bentley Horsepower is how fast you hit the wall. Torque is how far you take the wall with you. “If everything seems under control, you're just not going fast enough.” Mario Andretti If you can turn, you ain't going fast enough...

08-01-2022, 08:08 AM	#32
Heads-up Drives: 2010 2SS Join Date: Sep 2021 Location: Bozeman Montana Posts: 38	I got around 24 driving all interstate at 80 with the car stock. That's with 5 miles or so of driving in town and then running highway until I needed fuel. After I turned of AFM off, added headers and CAI, I got around 22-23 doing the same trip. Added 3.73 gears and I get 21 ish. Any full throttle acceleration and it goes down fast. I still get around 14-15 in town if I'm not idling a lot at stop lights.

08-03-2022, 12:38 PM	#38
DavidH Drives: 2010 Camaro 2SS Join Date: Jul 2021 Location: Chillicothe, Oh Posts: 138	Dang...I guess I need to quit worrying about my mileage. I'm averaging 19.8 with mixed driving and 5-10 minutes of idle time every morning. Long trips I've seen it up closer to 24mpg. Granted I'm completely stock aside from a muffler delete ��

08-06-2022, 03:57 PM	#42
acammer GPI Sales Consultant Drives: 2011 Camaro 2SS SGM Join Date: Jul 2016 Location: Weedsport, NY Posts: 2,794 View My Garage	The most important measurement is SPG - smiles per gallon. Ain't seen a Prius touch my car for that yet! __________________ GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph. *Got a question about a GPI product? Feel free to shoot me a message!*