heads - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 05-01-2009, 05:40 PM   #1
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Sep 2008
Location: orlando fl
Posts: 140
Thanks: 0
Thanked 0 Times in 0 Posts
BADBUICK is on a distinguished road
Default heads

just wondering who has changed or ported there heads if so how great were the mods?
BADBUICK is offline   Reply With Quote
Old 05-01-2009, 06:18 PM   #2
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Billboost just did his. I'm working on a set myself. But there not going on for a while.
Danthurs is offline   Reply With Quote
Old 05-04-2009, 08:38 AM   #3
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

What would you like to know?
BillBoost37 is offline   Reply With Quote
Old 05-04-2009, 02:36 PM   #4
Member
Posts like a V-Tak
 
Join Date: Apr 2009
Posts: 65
Thanks: 0
Thanked 0 Times in 0 Posts
kevinp is on a distinguished road
Default

prob wants to know if u can feel the diffrence
kevinp is offline   Reply With Quote
Old 05-04-2009, 03:33 PM   #5
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Tough to say. You don't necessarily feel a difference just from ported heads. But there'* an increase you can feel from all your other mods being able to push more through them.

Add in that I added rockers on top at the same time for a total lift of .579/.592 and yeah.. overall there'* a large difference. (Research very well before you try something like this) The heads themselves didn't actually add power though. They were merely a conduit for the power to flow through.
BillBoost37 is offline   Reply With Quote
Old 05-06-2009, 10:00 AM   #6
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Sep 2008
Location: orlando fl
Posts: 140
Thanks: 0
Thanked 0 Times in 0 Posts
BADBUICK is on a distinguished road
Default

sorry for not responding yes that is what i was looking for mostly. im just thinkng the way my stupid brain does i need to port the intake and if im half way down i think i should port the heads also... i dont see how it wouldnt add some power i mean if done right you will increase flow more flow more power potential... unless this isnt a weak link on our cars... i have a hard time believing any stock head isnt a weak link but then again i know i have a bit to go before the heads are mine...
how many hours did it take you to port them? did you get a valve job after?
BADBUICK is offline   Reply With Quote
Old 05-06-2009, 10:11 AM   #7
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

On heads, you can gain by smoothing the roughness of the casting. Rough areas will cause hot spots that add to predetonation. Aka KR.

Smoothing them and milling the valve guides to accept a higher than stock lift is what is considered a stage 2 head.

If you smooth, port and add bigger valves, that'* a stage 3.

IMO if you don't have headers, and plans to go well into the 12'* you won't need to port them much. Go for smoothing the roughness.

I didn't do any heads. Got a set of stage 3'* at a great price and dropped them at a machine shop to be checked.
BillBoost37 is offline   Reply With Quote
Old 05-06-2009, 10:24 AM   #8
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Sep 2008
Location: orlando fl
Posts: 140
Thanks: 0
Thanked 0 Times in 0 Posts
BADBUICK is on a distinguished road
Default

yea exactly what i wanted to do smooth remove some ridges if any etc but more a massage than a port good to know but at this point not worth the time and effort im thinking i got enough stuff to do b4 i get there
BADBUICK is offline   Reply With Quote
Old 05-06-2009, 10:32 AM   #9
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Think of it this way. Some things add power, like a supercharger or smaller sc pulley. Other things allow more to be added like headers, intake, heads. These allow more or better air flow. What goes in must come out. If not you have a traffic jam.
Danthurs is offline   Reply With Quote
Old 05-06-2009, 12:40 PM   #10
Member
Posts like a V-Tak
 
Join Date: Apr 2009
Posts: 65
Thanks: 0
Thanked 0 Times in 0 Posts
kevinp is on a distinguished road
Default

good thread.
kevinp is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
are 3.8 L. heads interchangable with 4.3 L. heads? Hay Bay Woody General GM Chat 1 06-21-2010 06:32 PM
Series II heads??? OLBlueEyesBonne 1992-1999 5 05-16-2003 07:23 PM
Leaking door heads up Mario Rosso 2000-2005 9 05-13-2003 08:22 PM
L67 heads on a L36? 95naSTA Performance, Brainstorming & Tuning 12 05-10-2003 01:35 AM
Heads up display Littlehovey General GM Chat 3 02-21-2003 12:20 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:19 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.