Notices
GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |
Sponsored by:
Sponsored by:

Is ported heads necessary?

Thread Tools
 
Search this Thread
 
Old 02-19-2019, 08:24 PM
  #1  
Teching In
Thread Starter
 
C10zeus's Avatar
 
Join Date: Feb 2019
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Default Is ported heads necessary?

I have a 2004 silverado 5.3 LM7, i have a cam from tsp and was going to turbo the truck, does any one have any numbers on how much of an impact ported heads will make or if it is even worth it or necessary to get them ported? I have a trunion kit with 243 heads, thanks
Old 02-19-2019, 08:48 PM
  #2  
TECH Senior Member
iTrader: (2)
 
FFDP's Avatar
 
Join Date: May 2014
Location: Rogers, MN
Posts: 5,189
Received 546 Likes on 472 Posts
Default

Sloppy mechanics did a youtube video on that, you can likely find it pretty easy.

In short, it's never a must do. It's only if you want to do it. Yes you can make a little more power because more flow is going to make more power.

If you goal is to just fry tires with 500hp, which is a cake walk with a cam/turbo setup then I wouldn't even put up a fuss about doing ported heads.
Old 02-19-2019, 10:22 PM
  #3  
Teching In
Thread Starter
 
C10zeus's Avatar
 
Join Date: Feb 2019
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Default

Ill have to look up the video, thanks
Old 02-20-2019, 06:08 AM
  #4  
TECH Addict
iTrader: (7)
 
madmann26's Avatar
 
Join Date: Feb 2013
Location: Somewhere north of 285, south of 985.
Posts: 2,987
Received 371 Likes on 299 Posts
Default

Tony Mamo says to never ever, port a stock LS head. I still have the email from him.
Old 02-20-2019, 01:34 PM
  #5  
Custm2500's Rude Friend
iTrader: (17)
 
1FastBrick's Avatar
 
Join Date: Apr 2007
Location: JunkYard
Posts: 14,326
Received 761 Likes on 630 Posts
Default

Originally Posted by madmann26
Tony Mamo says to never ever, port a stock LS head. I still have the email from him.
I am curious why he would say that?
Old 02-20-2019, 02:49 PM
  #6  
Moderator
iTrader: (19)
 
TXsilverado's Avatar
 
Join Date: Jan 2005
Location: Humble Texas
Posts: 18,315
Received 222 Likes on 148 Posts
Default

none of the things we do to our trucks is "necessary"
Old 02-20-2019, 05:47 PM
  #7  
TECH Regular
 
RB04Av's Avatar
 
Join Date: Jul 2018
Posts: 477
Likes: 0
Received 128 Likes on 107 Posts
Default

The more "Force" you use, the less difference everything on the intake side matters, and the more everything on the exhaust side matters. Just simple physics... The Force overcomes restriction on the int side but there's no practical way to Force MORE into a cyl unless the spent stuff gets OUT first.

Can't speak to what Tony says though. Doesn't make sense to me. But he's somebody whose opinion to take seriously for sure. OTOH given that a whole group of people have CNC programs that produce BIG power improvements when run on stock castings, I'm betting that there's more to whatever he ACTUALLY said, than what was paraphrased up there.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
zo6freak
GM Drivetrain & Suspension
16
05-10-2007 02:48 PM
johnrusso1987
FORCED INDUCTION
47
04-20-2007 10:03 PM
bowtieman81
GM Drivetrain & Suspension
1
02-15-2005 01:13 PM
FILE
GM Engine & Exhaust Performance
2
07-07-2002 10:57 PM



Quick Reply: Is ported heads necessary?



All times are GMT -5. The time now is 10:48 AM.