What is the best fuel options for a 416 ls3? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Shtiggs · 02-08-2022, 05:59 PM

I am in the process of building a 416 stroker and am shooting for around 10:1 compression and running around 15 lbs of boost max on the street. I currently have the stock ss pump and 850cc injectors. I know I need to upgrade but I am not sure where to start for this setup. I am open to meth injection so I can crank up the boot some when I visit the track but mostly this is a street machine. What are some good combinations of pumps and injectors and are there any potential snags I should keep in mind?

blake-b · 02-08-2022, 07:30 PM

AGP fuel system

I also think you'll need bigger injectors unless you plan on relying on meth for fueling but I would not. I would use meth only to cool, not fuel.

Shtiggs · 02-09-2022, 05:28 PM

Totally understand meth is only for cooling. Just mentioned it because of the boost pressure, since I would like to be able to turn up the boot when tracking it. I am pretty sure that 1000cc injectors are good for this situation but was not sure if going slightly larger than that would put the injectors in a better duty cycle range.

I am running the AGP turbos and did not think to look at them for fueling solutions as well. Thanks for the link.

blake-b · 02-09-2022, 09:29 PM

I have ID1700s in my vette and maybe hit 55% duty cycle at full tilt. I could have gotten away with 1300-1400s but didn't want to risk it.

Bigger injectors will give you more headroom as it seems everyone eventually wants more HP.

FasNuf · 02-10-2022, 09:58 AM

What fuel are you going to run?
Pump, E85 flex or something else?

Also running too big of an injector can lead to idle stability issues as the injector will go into a non linear area at very low duty cycles. (<1ms)
You might be able to mask some of this by lowering base pressure and raising idle.

BiggFoot · 02-11-2022, 10:21 AM

Quote:

Originally Posted by blake-b

I have ID1700s in my vette and maybe hit 55% duty cycle at full tilt. I could have gotten away with 1300-1400s but didn't want to risk it.

Bigger injectors will give you more headroom as it seems everyone eventually wants more HP.

Good advice. Listen to him . . . he has been around . . . seen it and done it.

Slowhawk · 02-13-2022, 11:03 AM

On pump gas the 85's will work, just need more fuel pump. 2nd fuel pump,rising rate return regulator will definitely work.

I'd personaly run an alky meth kit. would have no problem going 1000rwhp with 93 octain/meth/ 850's.

02-08-2022, 05:59 PM	#1
Shtiggs Drives: 2014 Camaro 2SS Manual Join Date: Feb 2018 Location: Denver Posts: 54	What is the best fuel options for a 416 ls3? I am in the process of building a 416 stroker and am shooting for around 10:1 compression and running around 15 lbs of boost max on the street. I currently have the stock ss pump and 850cc injectors. I know I need to upgrade but I am not sure where to start for this setup. I am open to meth injection so I can crank up the boot some when I visit the track but mostly this is a street machine. What are some good combinations of pumps and injectors and are there any potential snags I should keep in mind?

02-10-2022, 09:58 AM	#5
FasNuf Drives: 2014 Camaro ZL1 Join Date: Jul 2019 Location: Oregon Posts: 1,617 View My Garage	What fuel are you going to run? Pump, E85 flex or something else? Also running too big of an injector can lead to idle stability issues as the injector will go into a non linear area at very low duty cycles. (<1ms) You might be able to mask some of this by lowering base pressure and raising idle. __________________ . . . . https://www.youtube.com/channel/UCgN...etl17hA/videos

02-08-2022, 07:30 PM	#2
blake-b Drives: 2009 ZR1 Join Date: May 2010 Location: KCMO Posts: 3,205	AGP fuel system I also think you'll need bigger injectors unless you plan on relying on meth for fueling but I would not. I would use meth only to cool, not fuel.

02-09-2022, 05:28 PM	#3
Shtiggs Drives: 2014 Camaro 2SS Manual Join Date: Feb 2018 Location: Denver Posts: 54	Totally understand meth is only for cooling. Just mentioned it because of the boost pressure, since I would like to be able to turn up the boot when tracking it. I am pretty sure that 1000cc injectors are good for this situation but was not sure if going slightly larger than that would put the injectors in a better duty cycle range. I am running the AGP turbos and did not think to look at them for fueling solutions as well. Thanks for the link.

02-09-2022, 09:29 PM	#4
blake-b Drives: 2009 ZR1 Join Date: May 2010 Location: KCMO Posts: 3,205	I have ID1700s in my vette and maybe hit 55% duty cycle at full tilt. I could have gotten away with 1300-1400s but didn't want to risk it. Bigger injectors will give you more headroom as it seems everyone eventually wants more HP.

02-13-2022, 11:03 AM	#7
Slowhawk Drives: 1999 Trans Am Join Date: Jul 2009 Location: Bridgewater,Ma Posts: 2,017	On pump gas the 85's will work, just need more fuel pump. 2nd fuel pump,rising rate return regulator will definitely work. I'd personaly run an alky meth kit. would have no problem going 1000rwhp with 93 octain/meth/ 850's.