Porting pro comp heads
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Porting pro comp heads
Have to change the intake manifold gasket on my worked 350.....Maybe thinking since I'm almost there, pull the heads and have them ported...190 64cc heads..
Anybody have personal experience with porting pro comp heads ? Is it worth it ? Cars the usual worked 350 .040 over, cam, RPM dual plane intake, 750 carb , msd...Etc etc...
Anybody have personal experience with porting pro comp heads ? Is it worth it ? Cars the usual worked 350 .040 over, cam, RPM dual plane intake, 750 carb , msd...Etc etc...
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,809
From: Cool Northern Michigan
You have to ask yourself: are you racing every weekend? If not, why bother just for the street?
Not familiar with how much meat is on those heads to grind away. I would be terrified of accidently nicking into the water-jacket..
Not familiar with how much meat is on those heads to grind away. I would be terrified of accidently nicking into the water-jacket..
Dr. Detroit
Joined: Mar 2012
Posts: 10,090
Likes: 4,015
From: New Braunfels Texas
Depends solely on how bad the valve job area is on the Pro-Comps.......the valve job and the transition to the bowl is the most important area for flow in a head.......
The Pro-Comp probably has a good port shape so I would leave it alone. Look for someone who can perform a 5 angle (Serdi) valve job on these and blend it in nicely. Also, a premium backcut valve is always a bonus......
"Porting" the heads is not going to reap the benefits you want if the valve job remains untouched.
You might want to price out just getting new heads from AFR or Dart.......my own Dart 200's came unassembled and the valve job/transition/bowl area was very nice. It might be more or as much to modify yours.
Jebby
The Pro-Comp probably has a good port shape so I would leave it alone. Look for someone who can perform a 5 angle (Serdi) valve job on these and blend it in nicely. Also, a premium backcut valve is always a bonus......
"Porting" the heads is not going to reap the benefits you want if the valve job remains untouched.
You might want to price out just getting new heads from AFR or Dart.......my own Dart 200's came unassembled and the valve job/transition/bowl area was very nice. It might be more or as much to modify yours.
Jebby
Last edited by Jebbysan; Jan 13, 2020 at 03:43 PM.
Team Owner
Joined: Oct 2004
Posts: 81,241
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From: altered state
St. Jude Donor '05
Done a few Jebby is right. Yeah you can port them depends on the job done vs results
Never believed in hogging out just a little in a few places, best for the st/occasional strip car
Narrowing the guides doesnt do much but wont hurt you
Never believed in hogging out just a little in a few places, best for the st/occasional strip car
Narrowing the guides doesnt do much but wont hurt you
