need help with porting
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TECH Apprentice
Joined: Jan 2004
Posts: 327
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From: Kansas City, Mo
need help with porting I am new to porting out heads. Anyone got any pics of home porting jobs. I need to see how much metal and where to take metal out in a set of 5.3 or 5.7 heads.
TECH Senior Member
Joined: Apr 2004
Posts: 6,157
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From: Texas
Originally Posted by M6HuggerSS
DO NOT GO BY PICTURES WHEN PORTING HEADS!!!
if i were you id save yourself the time , $$$, and loss of HP, or loss of heads and just go buy a good set from one of our sponsers. jmo.
if i were you id save yourself the time , $$$, and loss of HP, or loss of heads and just go buy a good set from one of our sponsers. jmo.
If you want a good head job, you’ll want someone with experience ttt for ya. id like to see some advice on home porting also, i have an extra set of heads i want to try and port myself this winter. i know the best way is to send them to a professional, there's no arguing that, but i cannot afford the price of ls1 cylinder heads, and i figure i might be able to do just a simple cleanup on them
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Look through the forums under "home head porters" or some variation of that. I have a thread that has this info and so does other guys like us. I can also send ya some of my pix, just pm me an e-mail address.
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I posted cutaways of 6.0 heads not too long back. Not
much material to take away, I believe the flow gain is
more about art than about removal-in-bulk. Also see
some people just hogging away the "swirl ramp" and
others barely touch it; this I guess comes down to
whether these are "street torque heads that flow a
bit better" or "strip screamer heads, below 5000RPM
fuggedaboudit".
No idea how similar or dissimilar the 5.3 and 6.0 are,
aside from the chamber volume.
much material to take away, I believe the flow gain is
more about art than about removal-in-bulk. Also see
some people just hogging away the "swirl ramp" and
others barely touch it; this I guess comes down to
whether these are "street torque heads that flow a
bit better" or "strip screamer heads, below 5000RPM
fuggedaboudit".
No idea how similar or dissimilar the 5.3 and 6.0 are,
aside from the chamber volume.
Thread Starter
TECH Apprentice
Joined: Jan 2004
Posts: 327
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From: Kansas City, Mo
Originally Posted by M6HuggerSS
here are some of the pics of the heads i did....
i got them with a RUFF CNC job ... i put about 40 hours in porting, polishing, CC'ing and assembly.
i got them with a RUFF CNC job ... i put about 40 hours in porting, polishing, CC'ing and assembly.
TECH Fanatic
Joined: Sep 2003
Posts: 1,570
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From: San Diego, CA
M6 Hugger, did you say those valves were 2.050 and 1.57? Did you change the seats yourself or have them done. Nice work!
and yes... 2.05 and i think 1.60?
I just got done with a set of 6.0L heads that I had milled .030 and all I really did was just a good cleanup. Just made smooth transitions everwhere I could and took out casting flaws. I found it's really hard to look at a set of ported heads and determine where to take material out. All the research I did lead me to just want to clean mine up and have a very good 3 angle valve job done. You will hurt your performance by going nuts with a grinder if you don't know what you're doing. I just ordered the standard abrasives porting kit and went through and cleaned up the rough areas and casting lines. I have not had the car back to the track since, but none of my porting work seems to have had an adverse affect on the car. I am not expecting huge gains but hope to go a little faster. That's my .02, hope it helps.
TECH Fanatic
Joined: Sep 2003
Posts: 1,570
Likes: 1
From: San Diego, CA
nice ride there HUGGER!!!! sounds like you did a good job with your heads.....
did you CC, de-burr, and vacum test your heads be fore you installed them????
these are the MOST important things you can do.....
did you CC, de-burr, and vacum test your heads be fore you installed them????
these are the MOST important things you can do.....