Squash fuel system question - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Abdul_11 · 03-04-2017, 12:14 AM

I have a squash return system with 8 supply and 6 return, my question is the 6 return enough to make +1kwhp or not?

hou30guy · 03-04-2017, 01:19 AM

Yes

DaFisch · 03-07-2017, 10:59 AM

I went with 8, maybe even 10. Cannot fully remember. 6 was choking the build. 418 ls3 with twins and 4l80e.

blake-b · 03-07-2017, 11:04 PM

-6 will feed 1kwhp reliably. It is about pressure with fuel injection, not volume. Carburetors need volume because they don't have the pressure.

I used a stock feed line to a short 8AN line that Y'ed to 6AN to reach rail and also used a 6AN return line and fed over 1kwhp with zero issues with Squash. I'm currently running 6AN feed and using the factory feed as a return. I only changed things because I switched over to the Squash E85 pumps (had regular gas before) and figured while I was in there, I'd change the lines to the Aeroquip startlite Squash offers.

I believe it was Dave Steck who said they haven't reached the limits of 3/8 fuel line (comparable to 6AN) yet on GTRs.

http://www.corvetteforum.com/forums/...line-size.html

http://fuelab.com/fuel-line-size-vs-pressure-drop/

http://board.moparts.org/ubbthreads/...ne-handle.html

03-04-2017, 12:14 AM	#1
Abdul_11 Drives: Camaro SS Join Date: May 2015 Location: Indiana, Indianapolis Posts: 77	Squash fuel system question I have a squash return system with 8 supply and 6 return, my question is the 6 return enough to make +1kwhp or not? __________________ 2012 LS3, ERL 416ci, Squash dual fuel system, procharger F1A cog race kit.

03-07-2017, 10:59 AM	#3
DaFisch Master Amateur Mechanic Drives: Victory Red 2011 2SS/RS Join Date: Jan 2013 Location: South Barrington, IL Posts: 1,720	I went with 8, maybe even 10. Cannot fully remember. 6 was choking the build. 418 ls3 with twins and 4l80e. __________________ 2011 Victory Red 22/RS Forged 418 Ls3 from Texas Speed, LSX heads from Texas Speed, Tick Turbo cam, Jakes/PCM/Billet 4l80e, 3200 Stall converter from Circle D, DSS 750 hp axles, DSS aluminum driveshaft, stock 3.23 gears, TSW Wheels Front 20x10 Rear 20x11.5, Fabberage Twin Turbo Supercharger Killer kit with Upgraded Turbos, Squash Dual fuel pump, Full BMR Suspension/bushings, Holly High Rise intake manifold, ID1300 Injectors, Megan Coilovers, PCM of NC plug and play trans kit. HP/TQ TBA

03-04-2017, 01:19 AM	#2
hou30guy Drives: 2011 convertible 2ss/rs Join Date: Sep 2015 Location: Houston Posts: 971	Yes

03-07-2017, 11:04 PM	#4
blake-b Drives: 2009 ZR1 Join Date: May 2010 Location: KCMO Posts: 3,205	-6 will feed 1kwhp reliably. It is about pressure with fuel injection, not volume. Carburetors need volume because they don't have the pressure. I used a stock feed line to a short 8AN line that Y'ed to 6AN to reach rail and also used a 6AN return line and fed over 1kwhp with zero issues with Squash. I'm currently running 6AN feed and using the factory feed as a return. I only changed things because I switched over to the Squash E85 pumps (had regular gas before) and figured while I was in there, I'd change the lines to the Aeroquip startlite Squash offers. I believe it was Dave Steck who said they haven't reached the limits of 3/8 fuel line (comparable to 6AN) yet on GTRs. http://www.corvetteforum.com/forums/...line-size.html http://fuelab.com/fuel-line-size-vs-pressure-drop/ http://board.moparts.org/ubbthreads/...ne-handle.html