fuel pump size - need advice
Thread Starter
Teching In
Joined: Aug 2015
Posts: 32
Likes: 0
fuel pump size - need advice I have a stock LQ4. Changing out the heads to 243 (around 10:1 or just over that) and the cam 236/242 .600/.600 110+2 LSA. Also adding 1-7/8" long tube headers with 3" exhaust.
The engine has a Edelbrock carb intake and a Holley Terminater EFI carb set up.
Based on those conditions I am sure the 255 LPH Walboro pump is all I need but I may add turbo or nitrous in the future. This is a play toy/show car and not a drag car application.
Would it be better just to get the 400 LPH pump now or would that effect
how the car runs by choking it with fuel??
New to EFI so please excuse the lack of knowledge!
Chuck
The engine has a Edelbrock carb intake and a Holley Terminater EFI carb set up.
Based on those conditions I am sure the 255 LPH Walboro pump is all I need but I may add turbo or nitrous in the future. This is a play toy/show car and not a drag car application.
Would it be better just to get the 400 LPH pump now or would that effect
how the car runs by choking it with fuel??
New to EFI so please excuse the lack of knowledge!
Chuck
Thread Starter
Teching In
Joined: Aug 2015
Posts: 32
Likes: 0
So if I am running the 400 lph pump even though I dont need near that
it will just return whats not used but I will have plenty on hand if I ever
upgrade either the engine, add a turbo, add nitrous, etc?
it will just return whats not used but I will have plenty on hand if I ever
upgrade either the engine, add a turbo, add nitrous, etc?
TECH Senior Member
Joined: Jun 2016
Posts: 22,293
Likes: 3,617
From: Central Cal.
One thing; be sure to size your fuel lines and regulator to handle the flow the 400 will put out, which should really just be common sense, but had to be said.
That said, a good regulator will keep the engine fed (NOT overfed!) properly.
That said, a good regulator will keep the engine fed (NOT overfed!) properly.
TECH Senior Member
Joined: Jun 2016
Posts: 22,293
Likes: 3,617
From: Central Cal.
If you size lines for your final setup, there should be no problem once you start using the amt. of fuel you planned for.
Earl's has good fittings and hose, but there are others. Check with our vendors/sponsors.
Earl's has good fittings and hose, but there are others. Check with our vendors/sponsors.
TECH Fanatic
Joined: Jun 2003
Posts: 1,869
Likes: 99
I have a stock LQ4. Changing out the heads to 243 (around 10:1 or just over that) and the cam 236/242 .600/.600 110+2 LSA. Also adding 1-7/8" long tube headers with 3" exhaust.
The engine has a Edelbrock carb intake and a Holley Terminater EFI carb set up.
Based on those conditions I am sure the 255 LPH Walboro pump is all I need but I may add turbo or nitrous in the future. This is a play toy/show car and not a drag car application.
Would it be better just to get the 400 LPH pump now or would that effect
how the car runs by choking it with fuel??
New to EFI so please excuse the lack of knowledge!
Chuck
The engine has a Edelbrock carb intake and a Holley Terminater EFI carb set up.
Based on those conditions I am sure the 255 LPH Walboro pump is all I need but I may add turbo or nitrous in the future. This is a play toy/show car and not a drag car application.
Would it be better just to get the 400 LPH pump now or would that effect
how the car runs by choking it with fuel??
New to EFI so please excuse the lack of knowledge!
Chuck
If it's an fbody, two Racetronix kits dependent up year model are good to 550 rwhp. Plug and play and easy to install.
Read post #15.
https://ls1tech.com/forums/fueling-i...55-98-z28.html
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
