575 2143 casting #fe heads - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 09-23-17, 09:05 PM Thread Starter
Registered User
Join Date: Sep 2017
Posts: 3
575 2143 casting #fe heads

this may be a stupid question (knowing there are very limited options for poor mans medium riser heads) what kind of work would the machine shop do to prepare these heads for bigger valves . I did some internet research got a photo off internet images of a medium riser head intake port w/measurement then I took a photo out in the garage of the intake I bought off craigslist 575 2143 casting number from a 1958 or 59 fe 352 or 332. yes I do see wide open spaces on the internet images medium riser pic they are big . (take note he is cheating on his measurement just slightly) the old edsel heads don't seem too far behind. What I'm concidering is to do the port and polishing in my own garage and maybe have the machine shop prepare these for bigger valves. is this dewable? when I compare the pics it seems like a little utube port and polishing and some unknown costs at the machine shop would be competitive . can someone out there help open my awareness to this project. thanks for any comment or advise.

Attached Images
File Type: jpg craftfinal11.jpg (84.5 KB, 4 views)
File Type: jpg P1010512.jpg (73.6 KB, 4 views)
spoftc is offline  
Sponsored Links
post #2 of 2 (permalink) Old 09-27-17, 12:19 PM
Dazed and Confused
CatSkinner's Avatar
Join Date: May 2012
Location: Upstate New York
Posts: 7,571
Re: 575 2143 casting #fe heads

Porting and polishing primarily takes place in the throat above the valve. The rest of the runner being smoothed out does help with the flow but the primary gain is smoothing out the rough casting above the valve port. Any significant increase in the valve itself is determined by the head, itself. Typically, older heads can get an increase in size, but the space between the intake and exhaust determine how much you can increase the valve.

Beginner's Port and Polishing: 6 Steps

Ever notice that there's so many high performance parts available for GM products?

Did you ever think that maybe they NEED them?
CatSkinner is offline  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > FE (330-428) Tech

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome