porting heads - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ChebyCheyenne · 05-03-2005, 02:31 AM

Hey everyone,

Until just recently i had believed you had to take your heads to a machine shop to have them port matched. Someone told me to just do them myself with a die grinder or dremel or whatever.
I was just wondering, how many of you out there have done this yourself?
What are the best tools you found to use?
How long did it take you?

matt

RON WOODGEARD · 05-03-2005, 05:46 AM

Matt,

There's a kit available for your dremel to grind and sand the Ports. You do not want to do more then a port matching unless you're running a motor that turns on in the HIGH RPM's.. and IF you remove too much you will either go through the Port or weaken it making it Susceptible to cracking. What you want to do for better flow, Match the Ports to a Good gasket, By good I mean a good brand name, So when you need to replace the gasket in the future the gasket will be the same size and the heads, Gasket, and Intake will still be matched. Now along with the heads, you do the same to the intake runners.. Just taper all of them together,And for the final step in sanding, Use a smooth but not too smooth barrel disc... You want a slight roughness to the runners so the fuel tumbles and does not stay as droplets.

Jegs,Summit, and any other large performance auto parts house will have the kit.

ChebyCheyenne · 05-03-2005, 04:04 PM

thanks for the reply Ron. The entire engine is going to be rebuilt and im going to get the good Fel-Pro gaskets.

matt

05-03-2005, 02:31 AM	#1
ChebyCheyenne Registered User Join Date: Oct 2004 Location: Issaquah, WA Posts: 72	porting heads Hey everyone, Until just recently i had believed you had to take your heads to a machine shop to have them port matched. Someone told me to just do them myself with a die grinder or dremel or whatever. I was just wondering, how many of you out there have done this yourself? What are the best tools you found to use? How long did it take you? matt __________________ Truck #1: 1972 Chevrolet K20 Cheyenne Custom Camper SB400, TH400, NP205 Truck #2 1967 Chevrolet C10 Custom Sport Truck 327 small journal, TH400

05-03-2005, 04:04 PM	#3
ChebyCheyenne Registered User Join Date: Oct 2004 Location: Issaquah, WA Posts: 72	thanks for the reply Ron. The entire engine is going to be rebuilt and im going to get the good Fel-Pro gaskets. matt __________________ Truck #1: 1972 Chevrolet K20 Cheyenne Custom Camper SB400, TH400, NP205 Truck #2 1967 Chevrolet C10 Custom Sport Truck 327 small journal, TH400

05-03-2005, 05:46 AM	#2
RON WOODGEARD Resident Young Old Dude ! Join Date: Jul 2001 Location: Nevada Posts: 1,948	Matt, There's a kit available for your dremel to grind and sand the Ports. You do not want to do more then a port matching unless you're running a motor that turns on in the HIGH RPM's.. and IF you remove too much you will either go through the Port or weaken it making it Susceptible to cracking. What you want to do for better flow, Match the Ports to a Good gasket, By good I mean a good brand name, So when you need to replace the gasket in the future the gasket will be the same size and the heads, Gasket, and Intake will still be matched. Now along with the heads, you do the same to the intake runners.. Just taper all of them together,And for the final step in sanding, Use a smooth but not too smooth barrel disc... You want a slight roughness to the runners so the fuel tumbles and does not stay as droplets. Jegs,Summit, and any other large performance auto parts house will have the kit.



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