Homepage Garage Wiki Register Community Calendar Today's Posts Search
#Camaro6
Go Back   CAMARO6 > CAMARO6.com General Forums > ZL1 Discussions


BeckyD @ James Martin Chevy


Post Reply
 
Thread Tools
Old 06-21-2022, 10:43 AM   #29
JSH


 
JSH's Avatar
 
Drives: '20 ZLE
Join Date: Jun 2020
Location: Mile High
Posts: 3,627
Quote:
Originally Posted by KingLT1 View Post
No...38% is max with LT4 pump.
Have you ever measured/mic'd the fuel lobe while the cam was in the LT4 engine? I want to be sure what HPE installed because they won't disclose such.
__________________
'20 ZL1 1LE A10.
LME 390, E2650, FBO, 100 oct.
1116/967.
1.35/9.25/151 at 3500 ft. (only one pass)
15" conversion/MT ET Street R 325/50R15.

Last edited by JSH; 06-21-2022 at 12:16 PM.
JSH is offline   Reply With Quote
Old 06-21-2022, 05:55 PM   #30
KingLT1


 
KingLT1's Avatar
 
Drives: 2016 1SS NFG A8
Join Date: Aug 2017
Location: 46804
Posts: 6,842
Quote:
Originally Posted by JSH View Post
Have you ever measured/mic'd the fuel lobe while the cam was in the LT4 engine? I want to be sure what HPE installed because they won't disclose such.
The more then likely used a 32% lobe. That was the most common size used with LT4 fueling.
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP
Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP
Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA
KingLT1 is offline   Reply With Quote
Old 06-21-2022, 07:53 PM   #31
JSH


 
JSH's Avatar
 
Drives: '20 ZLE
Join Date: Jun 2020
Location: Mile High
Posts: 3,627
Quote:
Originally Posted by KingLT1 View Post
The more then likely used a 32% lobe. That was the most common size used with LT4 fueling.
So I have assumed, but I would sleep knowing for sure.
__________________
'20 ZL1 1LE A10.
LME 390, E2650, FBO, 100 oct.
1116/967.
1.35/9.25/151 at 3500 ft. (only one pass)
15" conversion/MT ET Street R 325/50R15.
JSH is offline   Reply With Quote
Old 06-22-2022, 01:04 AM   #32
swisstyphoon
Former GM Technician
 
swisstyphoon's Avatar
 
Drives: 2018 ZL1 A10, 06 Silverado Duramax
Join Date: Sep 2009
Location: Switzerland
Posts: 343
Quote:
Originally Posted by JSH View Post
Have you ever measured/mic'd the fuel lobe while the cam was in the LT4 engine? I want to be sure what HPE installed because they won't disclose such.
Same procedure works in the car, you can even measure on the fuel pump lifter, but that one might need a little help to go back down without a spring.
https://youtu.be/CcSAKKld5y4
__________________
2018 Camaro ZL1 A10
Rotofab Big Gulp, Nick Williams 103, Magnuson 2650, 9.17" (14%) lower, 90mm upper, Vengeance Racing Heads (LME) Cam Package (Cammotion Stage 1), Johnson Lifters, JMS Voltage Booster, Lingenfelter high flow check valve, BBK shorty headers, Custom 2.75" down pipes, Gesi Gen2 high flow cats, MM catch can 791whp, 772ft-lbs SAE
Just added 30% XDI Injectors, LPE big bore hpfp, Flex fuel.
Elite tuning, results coming soon.


2006 Silverado Duramax Diesel
MPI Compound Turbo
40% over Injectors
Efi Live DSP5 Tuning

Follow me on Instagram: Swisstyphoon1980
swisstyphoon is offline   Reply With Quote
 
Post Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 09:57 AM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.