Max effort fuel system?

parish8 · 10-12-2016, 06:03 PM

This add says 900rwhp on e85 when combined with their high pressure system. The high pressure system is an lt4 pump and injectors.

Let's assume they also are including the larger lobes on the cam.

Are their numbers accurate? 900rwhp is higher than I thought possible with just the di.

http://cordesracing.mybigcommerce.co...e-fuel-system/

Ian SS · 10-12-2016, 10:53 PM

I wonder what the limits are for just the high side kit? I hate that we might have to swap cam to get more fuel with e85

AndyUK · 10-13-2016, 12:57 AM

The lt4 pump is already higher flow, you dont need to change the cam lobes

parish8 · 10-13-2016, 06:57 AM

i called them. They said they are running everything listed above. Lt4 pump, lt4 injectors, increased lobe on the cam and their low side kit.

They also claimed it is good for 900rwhp on e85 just like the add does. I would like a confirmation of this before going this route.

AndyUK · 10-13-2016, 08:46 AM

There's no camshaft, the cam lobes on the LT1 and LT4 are the same, its the pumps and injectors that are included in the 2 kits. There's no cam swap involved.

parish8 · 10-13-2016, 09:33 AM

Andy, they make an aftermarket cam that has a larger fuel pump lobes ground into them.

My question is what is the hp limit of the high side when on e85 and using all available products?

jessrayo · 10-13-2016, 02:05 PM

Quote:

Originally Posted by parish8

Andy, they make an aftermarket cam that has a larger fuel pump lobes ground into them.

My question is what is the hp limit of the high side when on e85 and using all available products?

It is possible to get 1200 whp with modifications to the current fuel configuration. You need to browse the Corvette forums to see the specs on the cars. GirlyNFG got over 800whp on E85 with a 32% lobe. Attached is pic from Comp Cams website of their possible fuel lobe configurations.

BradfordCamaro · 10-13-2016, 02:43 PM

Quote:

Originally Posted by parish8

i called them. They said they are running everything listed above. Lt4 pump, lt4 injectors, increased lobe on the cam and their low side kit.

They also claimed it is good for 900rwhp on e85 just like the add does. I would like a confirmation of this before going this route.

??? If you think they are giving you a load of B.S, why buy their product just becuase someone here says it is good?

parish8 · 10-13-2016, 03:02 PM

Thanks. That helps. I did start to check out some of the cars and specs but most of them are running meth and pump gas. I will keep reading.

parish8 · 10-13-2016, 03:05 PM

Quote:

Originally Posted by BradfordCamaro

??? If you think they are giving you a load of B.S, why buy their product just becuase someone here says it is good?

I am not familur with them and am just looking for someone that is using their stuff to confirm their claims. Confirming a manufactures claim with people's real world experience is common.

Perdieu · 10-13-2016, 04:34 PM

Quote:

Originally Posted by parish8

I am not familur with them and am just looking for someone that is using their stuff to confirm their claims. Confirming a manufactures claim with people's real world experience is common.

I think you're friend with Justin Keith on Facebook.
I know they did some fuel work on his Vette and he was very please with the results you might ask him about it.

Atomic Ed · 10-13-2016, 04:51 PM

If it were me, I would look into replacing the in-tank pump first. I believe Jessrayo did this for about a grand, including labor and pump. No need for three pumps

wnta1ss · 10-13-2016, 07:00 PM

Quote:

Originally Posted by jessrayo

GirlyNFG got over 800whp on E85 with a 32% lobe.

She is using methanol injection too, not just E85, per her sig line.

parish8 · 10-13-2016, 07:07 PM

I think I am going to do all the high pressure system mods and oversize the low pressure system so that I am ready for whatever happens later. if I max out the high pressure system and they have no new parts available then maybe run one or two charge pipe mounted injectors on a hobbs switch.

10-12-2016, 06:03 PM	#1
parish8 Drives: 17 SS a8 Join Date: Feb 2010 Location: omaha Posts: 1,678	Max effort fuel system? This add says 900rwhp on e85 when combined with their high pressure system. The high pressure system is an lt4 pump and injectors. Let's assume they also are including the larger lobes on the cam. Are their numbers accurate? 900rwhp is higher than I thought possible with just the di. http://cordesracing.mybigcommerce.co...e-fuel-system/

10-12-2016, 10:53 PM	#2
Ian SS Drives: 2016 1SS, 2017 JKU Wrangler Join Date: Mar 2016 Location: San Diego Posts: 876 View My Garage	I wonder what the limits are for just the high side kit? I hate that we might have to swap cam to get more fuel with e85 __________________ SLO 1SS - sold 1SS MRC NPP 6MT 2018 Ram Rebel 4x4 5.7

10-13-2016, 12:57 AM	#3
AndyUK Drives: 2017 Camaro SS Join Date: Aug 2016 Location: UK Posts: 334	The lt4 pump is already higher flow, you dont need to change the cam lobes

10-13-2016, 06:57 AM	#4
parish8 Drives: 17 SS a8 Join Date: Feb 2010 Location: omaha Posts: 1,678	i called them. They said they are running everything listed above. Lt4 pump, lt4 injectors, increased lobe on the cam and their low side kit. They also claimed it is good for 900rwhp on e85 just like the add does. I would like a confirmation of this before going this route.

10-13-2016, 08:46 AM	#5
AndyUK Drives: 2017 Camaro SS Join Date: Aug 2016 Location: UK Posts: 334	There's no camshaft, the cam lobes on the LT1 and LT4 are the same, its the pumps and injectors that are included in the 2 kits. There's no cam swap involved.

10-13-2016, 09:33 AM	#6
parish8 Drives: 17 SS a8 Join Date: Feb 2010 Location: omaha Posts: 1,678	Andy, they make an aftermarket cam that has a larger fuel pump lobes ground into them. My question is what is the hp limit of the high side when on e85 and using all available products?

10-13-2016, 03:02 PM	#9
parish8 Drives: 17 SS a8 Join Date: Feb 2010 Location: omaha Posts: 1,678	Thanks. That helps. I did start to check out some of the cars and specs but most of them are running meth and pump gas. I will keep reading.

10-13-2016, 04:51 PM	#12
Atomic Ed Drives: 2001 Audi TT, 2016 Camaro Join Date: May 2016 Location: Eastern Washington Posts: 833	If it were me, I would look into replacing the in-tank pump first. I believe Jessrayo did this for about a grand, including labor and pump. No need for three pumps

10-13-2016, 07:07 PM	#14
parish8 Drives: 17 SS a8 Join Date: Feb 2010 Location: omaha Posts: 1,678	I think I am going to do all the high pressure system mods and oversize the low pressure system so that I am ready for whatever happens later. if I max out the high pressure system and they have no new parts available then maybe run one or two charge pipe mounted injectors on a hobbs switch.

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