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April 6th, 2010, 02:01 PM
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#1
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Registered User
Join Date: Feb 2010
Location: houston
Posts: 17
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02 firebird v6 port&polish
hi all, i have an 02 firebird v6, the engine is mostly stock except for cold air intake and exhaust. . I was wondering about port and polish, are there much hp to gain from donig port and polish? A friend would be helping me do it, so money is no concern, I wouldnt pay for it, but I was just wondering what hp is gained from doing port&polish to a 3.8 v6?
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April 6th, 2010, 03:12 PM
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#2
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Moderator
Join Date: Jan 2010
Location: Carlsbad, CA
Posts: 143
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I would say the added flow would go to waste without a larger cam. If your going that far why not install a cam as well?
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April 6th, 2010, 04:03 PM
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#3
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Administraterer ™
Join Date: Oct 2009
Location: Los Altos, CA
Posts: 575
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is there really that bad of a lip on the V6 tb? I would say on a stock vehicle the work is not really worth the gains, but if you want numbers, depending on the job and how much is cleared up... you may get up to 3rwhp 
__________________
- 2002 Z/28 M6  All Stock
My Garage
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April 6th, 2010, 09:30 PM
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#4
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Registered User
Join Date: Feb 2010
Location: houston
Posts: 17
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seriously, thats all that would get me lol
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April 6th, 2010, 10:42 PM
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#5
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Moderator
Join Date: Oct 2009
Location: Bay Area, CA
Posts: 241
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If that....
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2003 Z06 - Procharged and LTs
1967 Camaro - LS1 T56 project
2000 Camaro SS m6 - 523rwhp 468rwtq - Sold
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April 6th, 2010, 11:26 PM
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#6
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Moderator
Join Date: Jan 2010
Location: Carlsbad, CA
Posts: 143
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Did he say TB??? I hear port and polish I think heads not TB. Thats why I asked why he wasn't doing a cam to.
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April 6th, 2010, 11:39 PM
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#7
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Administraterer ™
Join Date: Oct 2009
Location: Los Altos, CA
Posts: 575
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I just assumed tb since normally the average person doesn't port and polish their heads in their garage, which is normally professional done with a CNC machine 
__________________
- 2002 Z/28 M6 All Stock
My Garage
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April 7th, 2010, 03:48 PM
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#8
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Moderator
Join Date: Jan 2010
Location: Carlsbad, CA
Posts: 143
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You're prob right, but where did he say "in his garage"? I'm not capible but I have friends that have ported and polished their own heads, yea on a CNC machine. So
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April 7th, 2010, 04:10 PM
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#9
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Administraterer ™
Join Date: Oct 2009
Location: Los Altos, CA
Posts: 575
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Quote:
Originally Posted by 99Hugger
You're prob right, but where did he say "in his garage"?
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well he said his friend is helping him out... just assumed I guess
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- 2002 Z/28 M6 All Stock
My Garage
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April 11th, 2010, 02:10 AM
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#10
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Registered User
Join Date: Nov 2009
Location: H-Town
Posts: 11
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he might have friends at a machine shop...
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April 13th, 2010, 02:41 PM
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#11
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Moderator
Join Date: Jan 2010
Location: Carlsbad, CA
Posts: 143
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I guess he's just gonna leave us hangin'  lol
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June 17th, 2010, 11:44 AM
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#12
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Registered User
Join Date: Jun 2010
Location: South Florida
Posts: 4
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I was able to get the 3800 heads to flow over 230cfm, up from the lame stock 158cfm - using my FlowQuik flow bench. 
I would suggest only cleaning up casting flash and port-matching the gaskets if you don't have access to a flow bench - you can seriously hurt flow numbers if you don;t know what you are doing.
-John
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May 6th, 2011, 03:02 PM
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#13
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4th F-Body Groupie
Join Date: Jan 2010
Location: Vicksburg, MS
Posts: 251
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Quote:
Originally Posted by Forced_Firebird
I was able to get the 3800 heads to flow over 230cfm, up from the lame stock 158cfm - using my FlowQuik flow bench.
I would suggest only cleaning up casting flash and port-matching the gaskets if you don't have access to a flow bench - you can seriously hurt flow numbers if you don;t know what you are doing.
-John |
whats the car running like now after you pp the heads? did add a cam? if so which one, specs??
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 98 firebird v6 A4 ; Dream Bird - work in progress
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