Fuel and FI - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Brazensol · 04-18-2021, 11:09 AM

What horsepower level will the stock injectors and pump reliably support?

gsxrturbo · 04-18-2021, 12:39 PM

correct me if im wrong guys,but i think most do full mods and cam on stock fuel systems.so about 485 rwhp

gunchamp · 04-18-2021, 06:22 PM

Quote:

Originally Posted by Brazensol

What horsepower level will the stock injectors and pump reliably support?

If staying all motor it would take a bit. Forced induction and e85 take alot of fuel. Lots of variable here

Brazensol · 04-18-2021, 06:48 PM

Quote:

Originally Posted by gunchamp

If staying all motor it would take a bit. Forced induction and e85 take alot of fuel. Lots of variable here

I am limited to 90 octane pump gas (but I guess I could do octane boosters but not sure I want to mess with that everytime I fill up). I will either get a PD blower or centri blower.

RupertPupkin · 04-18-2021, 07:08 PM

Methanol is a good option.

CamaroCracka · 04-18-2021, 07:09 PM

My ZL1 pump topped out around 580hp. With the BAP, it hit 712 with room to spare. I would not try FI on a stock SS fuel pump.

Axe55 · 04-19-2021, 09:47 AM

The Whipple kit I bought came with a BAP for the stock SS pump, and I ran that for 2 years with no issues. I'm assuming Whipple did enough testing to ensure the stock SS pump and BAP will handle a Whipple with the 4" pulley. It was a conservative tune though.

If you start dropping pulley sizes, adding a cam, 3" exhaust, tuning, etc etc you will need a bigger fuel system. If you are just doing an FI kit, you can get away with an SS pump and a BAP.

eLeSthree · 04-20-2021, 05:42 AM

Quote:

Originally Posted by Brazensol

What horsepower level will the stock injectors and pump reliably support?

If NA the engine is sucking on those injectors, which will make them work upto somewhere around 580-600, but they will be beyond 80% DC.

If you're running boost, the engine will be blowing against the injectors, and the pump will struggle to keep up fuel pressure. I personally would not even try using a stock fuel pump or stock injectors with Forced Induction. You would see them max out sooner than NA.

FI aint cheap. You need at least a ZL1 pump (and fpcm tune) and some injectors.

UNRIVALED SS · 04-20-2021, 10:18 PM

Anywhere from 550-580 depending on the car and the ability of the tuner. I ran just under 600 for years on a bone stock fuel pump without a problem.
That is cutting it very close but it worked.

Brazensol · 04-21-2021, 08:48 PM

Quote:

Originally Posted by Axe55

The Whipple kit I bought came with a BAP for the stock SS pump, and I ran that for 2 years with no issues. I'm assuming Whipple did enough testing to ensure the stock SS pump and BAP will handle a Whipple with the 4" pulley. It was a conservative tune though.

If you start dropping pulley sizes, adding a cam, 3" exhaust, tuning, etc etc you will need a bigger fuel system. If you are just doing an FI kit, you can get away with an SS pump and a BAP.

Thanks for the info. I have no plans (nor foresee any) to go beyond ~600-650 RWHP. That will be about all I think I can (or should) handle...
I think I'd be quite happy at "only" 575 hp.

Axe55 · 04-22-2021, 09:37 AM

For the record, I upgraded to a ZL1 pump in order to hit the 600rwhp I'm at now. When I went from stock to the Whipple kit, it was fine on the SS pump and BAP, which is what Whipple recommended.

04-18-2021, 11:09 AM	#1
Brazensol Drives: 2013 2SS Join Date: Mar 2014 Location: Alaska Posts: 263	Fuel and FI What horsepower level will the stock injectors and pump reliably support?

04-18-2021, 07:08 PM	#5
RupertPupkin Drives: 2014 Camaro SS 1Le Join Date: Feb 2016 Location: IL Posts: 1,583	Methanol is a good option. __________________ 2014 SS 1LE Money Pit/ Forged 402 CAM 22X/24X, .619/.617, 113 LSA/ LS9 Heads FIC 1200cc/DSX Aux Pump//McLeod RXT Clutch 730whp: 630Trq

04-18-2021, 07:09 PM	#6
CamaroCracka Drives: 2010 Turbo LS3 Join Date: Dec 2009 Location: Palm Bay, FL Posts: 2,729	My ZL1 pump topped out around 580hp. With the BAP, it hit 712 with room to spare. I would not try FI on a stock SS fuel pump. __________________ 2010 SS - On3 kit with downpipe cutout, CTR 78/80, CompCam 239/251 620/632 122+4, E85, Z28 suspension and ZL1 diff with Outlaw axles. Gen6 ZL1/1LE brakes. 2011 Vert - 416/w 230/236 .612/.602 115lsa, 1LE suspension w/32mm rear bar. Z28 diff. ZL1 brakes.

04-19-2021, 09:47 AM	#7
Axe55 Drives: 2012 Camaro SS Join Date: Jun 2019 Location: Toronto Posts: 159	The Whipple kit I bought came with a BAP for the stock SS pump, and I ran that for 2 years with no issues. I'm assuming Whipple did enough testing to ensure the stock SS pump and BAP will handle a Whipple with the 4" pulley. It was a conservative tune though. If you start dropping pulley sizes, adding a cam, 3" exhaust, tuning, etc etc you will need a bigger fuel system. If you are just doing an FI kit, you can get away with an SS pump and a BAP. __________________ 2012 Camaro SS LS3, JRE Scoop, CAI intake, Whipple Supercharger, Fast 85lb injectors, ZL1 pump, McLeod RXT clutch, MGW shifter, Stainless Power 1 7/8 headers w/HFC, Ridetech coilovers, BMR sway bars, trailing arms, toe rods, cradle bushing inserts, 2020 Speed Tuned.

04-22-2021, 09:37 AM	#11
Axe55 Drives: 2012 Camaro SS Join Date: Jun 2019 Location: Toronto Posts: 159	For the record, I upgraded to a ZL1 pump in order to hit the 600rwhp I'm at now. When I went from stock to the Whipple kit, it was fine on the SS pump and BAP, which is what Whipple recommended. __________________ 2012 Camaro SS LS3, JRE Scoop, CAI intake, Whipple Supercharger, Fast 85lb injectors, ZL1 pump, McLeod RXT clutch, MGW shifter, Stainless Power 1 7/8 headers w/HFC, Ridetech coilovers, BMR sway bars, trailing arms, toe rods, cradle bushing inserts, 2020 Speed Tuned.

04-18-2021, 12:39 PM	#2
gsxrturbo Drives: 2010 ss Join Date: Oct 2015 Location: windom mn Posts: 337	correct me if im wrong guys,but i think most do full mods and cam on stock fuel systems.so about 485 rwhp

04-20-2021, 10:18 PM	#9
UNRIVALED SS Drives: 2010 Camaro SS Join Date: Aug 2010 Location: El Paso Posts: 704 View My Garage	Anywhere from 550-580 depending on the car and the ability of the tuner. I ran just under 600 for years on a bone stock fuel pump without a problem. That is cutting it very close but it worked.