Fueling Questions
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Instructor
Joined: Sep 2016
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Fueling Questions
Didn't find much information searching through the forum on the big bore direct injection high volume fuel pump by Lingenfelter. I just got in the boost scene so I'm guessing it might of just came out?
I know one option for the LT1 motors is upgrading to the Lt4 high pressure fuel pump which cost $850-950.
Now with the Lingenfelter fuel pump option is it worth the $500-$600 with a stock cam I am trying to find out vs the Lt4 fuel pump?
I know one option for the LT1 motors is upgrading to the Lt4 high pressure fuel pump which cost $850-950.
Now with the Lingenfelter fuel pump option is it worth the $500-$600 with a stock cam I am trying to find out vs the Lt4 fuel pump?
Le Mans Master
Joined: Mar 2010
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From: DFW TX
LPE states their "big bore" pump flows 10% more flow than a LT4 pump. At a cost of $1495 compared to around $750-$900 for a LT4 pump you have to ask yourself if the "10%" more flow is worth $500 to you.
Wasn't me. I run the LT4 hardware and make plenty of power with it.
Wasn't me. I run the LT4 hardware and make plenty of power with it.
Last edited by C7&7; Dec 27, 2017 at 12:36 PM.
Le Mans Master
Joined: Mar 2010
Posts: 7,048
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From: DFW TX
Thread Starter
Instructor
Joined: Sep 2016
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Well that's plenty enough for me as I won't have the supporting mods to reach that. Am I limiting myself at some point with the stock cam and the lt4 pump? I assume at some point you can only throw so much fuel at it and amount of fuel the engine can effectively and efficiently burn and get rid of, will dictate the power the engine will generate.
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
Well that's plenty enough for me as I won't have the supporting mods to reach that. Am I limiting myself at some point with the stock cam and the lt4 pump? I assume at some point you can only throw so much fuel at it and amount of fuel the engine can effectively and efficiently burn and get rid of, will dictate the power the engine will generate.
Ant
Last edited by FYREANT; Dec 28, 2017 at 08:41 PM.
Thread Starter
Instructor
Joined: Sep 2016
Posts: 182
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Dual Meth (m15 nozzles)
Tsp headers 1 7/8
Aldo weld breather can
Currently at 650whp/ 610Torq and out of fuel.
My goal is to reach 700-750whp now. I rather trust my tune and not do pistons till I decide to crack open the motor and install a cam. I just didn't know if I could pump more fuel with the Lingenfelter pump that claims more fuel flow with the stock cam and be fine / gain anything over the lt4 which sounds like will supply plenty enough fuel for my goals.
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
Procharger D1SC w/ 4.0 pulley
Dual Meth (m15 nozzles)
Tsp headers 1 7/8
Aldo weld breather can
Currently at 650whp/ 610Torq and out of fuel.
My goal is to reach 700-750whp now. I rather trust my tune and not do pistons till I decide to crack open the motor and install a cam. I just didn't know if I could pump more fuel with the Lingenfelter pump that claims more fuel flow with the stock cam and be fine / gain anything over the lt4 which sounds like will supply plenty enough fuel for my goals.
Dual Meth (m15 nozzles)
Tsp headers 1 7/8
Aldo weld breather can
Currently at 650whp/ 610Torq and out of fuel.
My goal is to reach 700-750whp now. I rather trust my tune and not do pistons till I decide to crack open the motor and install a cam. I just didn't know if I could pump more fuel with the Lingenfelter pump that claims more fuel flow with the stock cam and be fine / gain anything over the lt4 which sounds like will supply plenty enough fuel for my goals.
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Thread Starter
Instructor
Joined: Sep 2016
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To get to your goal you need to do the LT4 HPFP and a lash cap, which will boost your high side fuel delivery about 40%. Then you need to drop a couple pulley sizes on the blower to get it to max output. Since you are already running dual meth you will be good on the fueling, just know that at WOT the meth will be required for not only octane but as a supplemental fuel source. Forget the Lingenfelter pump. You don't need it. I would estimate those mods alone will get you around 700-715hp. How many lbs of boost you runnig with your current setup? 650 seems high for a 4.0 pulley..