Alum Intake....Port it? - Vintage Mustang Forums
Vintage Mustang Forum
HomeForumGalleryClassifiedsAbout UsAdvertiseContact Us
» Auto Insurance
» Featured Product
Go Back   Vintage Mustang Forums > General Discussion > Vintage Mustang Forum
Vintage-Mustang.com is the premier Ford Mustang Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools
Old 01-04-2013, 10:00 AM   #1 (permalink)
Member
 
Join Date: Nov 2009
Location: Tennessee
Posts: 71
Send a message via Yahoo to frontshadow
Default Alum Intake....Port it?

I just received an aluminum intake for my 67/289. Heads were reworked several years back and ported....larger valves, springs...etc...runs great!

I want to replace the stock FOMOCO cast iron 4bbl intake with an alum one and would like to know what the groups recommendations are for porting the aluminum one? Would you even mess with doing this and if so is this not something that one could do themselves with a dremel tool?

Thanks
frontshadow is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-04-2013, 10:14 AM   #2 (permalink)
Senior Member
 
Fullbasement's Avatar
 
Join Date: Oct 2010
Location: Chattanooga, TN
Posts: 627
Default

Port matching is a good idea, but. You need to make sure you know exactly where the ports will match up. Not always easy to determine where the intake ports end up when installed. If you're off by a 1/16" then you'll lose any benefit.

You'll also need a cutting tool with wide flutes or teeth. Using the same tool used for iron will clog up with the aluminum shavings and be impossible to remove. And using a stone will only cause it to be coated with aluminum in a matter of seconds.

I'm not sure if a dremel would handle the job or not. Maybe since it's soft aluminum. But I'd use a die grinder.
__________________
A ship in harbor is safe, but that is not what ships are built for.
Fullbasement is offline   Reply With Quote Quick reply to this message
Old 01-04-2013, 10:17 AM   #3 (permalink)
Senior Member
 
22GT's Avatar
 
Join Date: Jun 2009
Location: Southeastern Pennsylvania
Posts: 24,210
Default

The inlets in the heads need to be at least 1/16" larger than the intake. If that's it, you are good. If the heads were ported, was the iron intake also ported? If so, you might be disappointed with the "upgrade".
__________________
Amateur restorer. Well, sometimes I have been paid for it. But not right now.
22GT is offline   Reply With Quote Quick reply to this message
Old 01-04-2013, 12:11 PM   #4 (permalink)
Senior Member
 
Join Date: Apr 2012
Location: McKinney, TX
Posts: 1,103
Default

If it is ported iron heads, I don't think you'll see the benefit from spending the time and money to port an aftermarket intake. Just pick a nice, matched intake and call it done.
__________________
Fitting 315's on the '66
Z06killinsbf is offline   Reply With Quote Quick reply to this message
Old 01-04-2013, 01:08 PM   #5 (permalink)
I won a special award
 
Maxum96's Avatar
 
Join Date: Dec 2008
Location: Northern Colorado
Posts: 6,441
Default

Unless you have a very high performance engine, I personally don't see the benefits of head and intake porting on a street engine.
__________________
1970 Fastback (to be finished outside as a Boss 302 clone)
393 Windsor AFR 205 heads with 11.5:1 compression
Tremec TKO 5 Speed
Link to my Hub Garage and blog about my car http://www.hubgarage.com/mygarage/maxum96





Maxum96 is offline   Reply With Quote Quick reply to this message
Old 01-04-2013, 06:07 PM   #6 (permalink)
Senior Member
 
Alan _MacDougall's Avatar
 
Join Date: Dec 2009
Location: Pacific NW
Posts: 857
Default

I would pick intake manifolds for your application and see how the ports match and fit. I ordered a couple intakes from summit, checked the fit and sent one back unused. I agree port matching on a slightly modified engine will not be worth the bother. On a heavily modified engine depending on the intake manifold it can be a significant improvement.
Alan _MacDougall is offline   Reply With Quote Quick reply to this message
Old 01-04-2013, 08:59 PM   #7 (permalink)
Senior Member
 
blkfrd's Avatar
 
Join Date: Apr 2001
Location: Anaheim Hills, CA
Posts: 2,462
Default

You should always check the matching for the instance that you have. You have no idea how mismatched it is with ported heads. It will not hurt, done correctly, and can only help. If you don't know how to check port matching, let me know.
__________________
Tracy Blackford
Anaheim, CA
65 Mustang FB, 331 custom built with 289 H beam rods and 383W piston, 282S cam, self ported '70 351w heads, Dougs Tri-Y headers. 1.7 shaft rockers and 26986 beehives. Hurricane Single Plane and custom 750 HP. T5z and 3.50 9" posi rear.
430 HP @ 6500...not too shabby for old school heads!


'65 Fastback
blkfrd is offline   Reply With Quote Quick reply to this message
Old 01-04-2013, 09:05 PM   #8 (permalink)
I won a special award
 
Maxum96's Avatar
 
Join Date: Dec 2008
Location: Northern Colorado
Posts: 6,441
Default

Quote:
Originally Posted by blkfrd View Post
It will not hurt, done correctly, and can only help.

I'd have to say that's not always true. I've seen flow bench numbers where porting didn't do any good. Sometimes people get so crazy porting the intake side, they forget about the exhaust side. That's real prevalent with 351C and Boss 302 heads. I've seen many of them hogged out on the intake side, but with stock exhaust port. That's due to the sharp dogleg and water passage in the exhaust port preventing any real amount of porting of the exhaust. And factory 351C/Boss 302 heads already have big intake ports, but not so much on the exhaust side.
__________________
1970 Fastback (to be finished outside as a Boss 302 clone)
393 Windsor AFR 205 heads with 11.5:1 compression
Tremec TKO 5 Speed
Link to my Hub Garage and blog about my car http://www.hubgarage.com/mygarage/maxum96





Maxum96 is offline   Reply With Quote Quick reply to this message
Old 01-04-2013, 10:16 PM   #9 (permalink)
Junior Member
 
wheelsup351's Avatar
 
Join Date: May 2011
Posts: 624
Default

i've personally seen bad or incomplete port jobs rob horsepower. bigger isnt always better.

i think the key is to eliminate as many restrictions as possible on the intake AND the exhaust side. therefore, i agree with the guy who suggested port matching. also look at gasket placement. you can spend all the money in the world porting runners only to set the intake down and shove the gasket into a position where it now acts as restriction. a slapdick shop wont care. it wont leak, but now you're also shooting yourself in the foot and wasting money.

back to the exhaust side. for example, what good is a killer head and intake combo with shi*t headers and exhaust where in some places the kinks in the exhaust tubing make it under 2 inches in diameter in some areas. (mandrel bends ftw). get rid of restrictions.

here is a pic looking down the neck of my intake into the head. perfect match.

http://farm3.staticflickr.com/2628/3...9a677f27_o.jpg
__________________
Jason
'67 Fastback traps 126 @ 3400# all motor & bad driver
October 2014 Mustang Monthly Feature Car
wheelsup351 is offline   Reply With Quote Quick reply to this message
Old 01-05-2013, 05:46 AM   #10 (permalink)
Supporting Member
Senior Member
 
supershifter2's Avatar
 
Join Date: Nov 2009
Location: Frum Hear Two Their Eventually
Posts: 7,393
Default

for the ultimate intake port job send it to Wilson Manifolds.
__________________
supershifter2 < !
supershifter2 is offline   Reply With Quote Quick reply to this message
Old 01-05-2013, 12:17 PM   #11 (permalink)
Senior Member
 
Join Date: Jun 2012
Location: Aurora Colorado
Posts: 366
Default

Quote:
Originally Posted by supershifter2 View Post
for the ultimate intake port job send it to Wilson Manifolds.
Very true but you better bring a fat wallet
__________________
65 coupe restomod 5.0/t5z/4whl disc/pwr windows/ps
62 galaxie 500xl convertible
65 austin hhttp://i179.photobucket.com/albums/w...s/IMG_2869.jpgealey replica 302/4spd
dav65mus is offline   Reply With Quote Quick reply to this message
Old 01-05-2013, 01:09 PM   #12 (permalink)
Senior Member
 
mikemstang66's Avatar
 
Join Date: Aug 2006
Location: palmdale
Posts: 4,594
Default

+1 on port match , not hard to do your self .
__________________
1966 convert
mikemstang66 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Vintage Mustang Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are Off


Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 01:58 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.