...

Go Back   Lateral-g Forums > Technical Discussions > EFI and Forced Induction
User Name
Password



Reply
 
Thread Tools Display Modes
  #1  
Old 02-16-2021, 11:31 AM
vet57air's Avatar
vet57air vet57air is offline
Senior Member
 
Join Date: Feb 2021
Location: West coast Canada
Posts: 140
Thanks: 33
Thanked 135 Times in 66 Posts
Default LT4 MAF location

I am building a 66 C10 with the Gen V LT4 8 speed auto. Mostly done and have put the build on the project updates as "66 Chevy Cgt". I am trying to build a custom air intake/airfilter but cannot meet the specs that GM lays out for the MAF location. They want straight 4" pipe 6" long with the MAF in the center and 10" away from the throttle body. With my intake the most I could get is 2" before the MAF of straight pipe and 1" after, but packages very nicely. I am pretty close to 10" away from the throttle body. I could just pipe down the front of the engine and exceed their specs but it would not be as cool. How critical is it? Deal breaker?
Name:  intake.jpg
Views: 0
Size:  136.3 KB

Last edited by vet57air; 02-16-2021 at 11:41 AM.
Reply With Quote
  #2  
Old 02-16-2021, 07:05 PM
PTAddict PTAddict is offline
Senior Member
 
Join Date: May 2005
Posts: 247
Thanks: 2
Thanked 9 Times in 6 Posts
Default

Quote:
Originally Posted by vet57air View Post
I am building a 66 C10 with the Gen V LT4 8 speed auto. Mostly done and have put the build on the project updates as "66 Chevy Cgt". I am trying to build a custom air intake/airfilter but cannot meet the specs that GM lays out for the MAF location. They want straight 4" pipe 6" long with the MAF in the center and 10" away from the throttle body. With my intake the most I could get is 2" before the MAF of straight pipe and 1" after, but packages very nicely. I am pretty close to 10" away from the throttle body. I could just pipe down the front of the engine and exceed their specs but it would not be as cool. How critical is it? Deal breaker?
Attachment 73912
What the recommendations are shooting for is relatively smooth airflow over the MAF - that's what the straight section is supposed to provide. In most cases a sub-optimal MAF location can be tuned around by any competent tuner, not a big deal because you really should have it tuned anyway. The factory crate tunes typically calibrate the MAF overly rich to account for installation variations. That said, if you have really sharp turns before or after the MAF, that can complicate the tuning process.
__________________
Latest car: https://lateral-g.net/members/borduin/
EFI Tuner for: http://www.modernclassicsauto.com
Reply With Quote
The Following User Says Thank You to PTAddict For This Useful Post:
vet57air (02-16-2021)
  #3  
Old 02-16-2021, 08:35 PM
vet57air's Avatar
vet57air vet57air is offline
Senior Member
 
Join Date: Feb 2021
Location: West coast Canada
Posts: 140
Thanks: 33
Thanked 135 Times in 66 Posts
Default

Thank you for that. I guess it won't be as cool as I will just go straight down so I will be able to exceed GM's spec

Last edited by vet57air; 02-17-2021 at 06:48 PM.
Reply With Quote
Reply

Thread Tools
Display Modes

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 09:15 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright Lateral-g.net