The good sound of my '77 come from the cam moreso than the header. My air breather is a factory one with the front snorkel removed, base painted blue, top painted black. I put a 250 ci decal on the top. Here is an old pic.
Dan, you may want to take the head off and have a port divider put in the middle exhaust port. It will make the header a little more effective, especially when you put the two-barrel on that engine.
Let me know what time on the 23rd is good for you guys .. The hoist is at Terry's Dad's house I believe .... so we'd have to bring it over to Terry's to lift your engine ... I'm not gonna pull apart the engine and tinker with it ... it's been professionaly rebuilt and don't want to mess it up ...
Ohh yea, I forgot Terry was takeing it over there. I'll talk to my grandpa and let you know something real soon.
dan, the "divider" goes in the center exh. port before you bolt the header on. you don't have to go in the motor. ...good for 15-20 more hp. you might also want to mount the "starter" with the header on and check the fit. my header was a single outlet and i had to cut the flange off and turn it about 1/4 turn and weld it back on...frank...
Yes, all 250's have low mount starters like a 302. I'm not sure anyone makes a 6 cylinder header for a low mount starter, which is why you would have to turn the flange. I forgot all about that. I could be wrong though, just what I've read. Dan, if you don't mind me asking, how much did you give for that header?
I was set to order the Port Divider ... $13 + $16 shipping? That sucks ... is it really worth it? I'll call them tomorrow and see if they can send it Priority mail for $4 ... See link above ... $239.95 for the Header + Tax ...
$29 for another 15-20 HP and most likely some increased fuel efficiency? Hmmmmmm. Is it worth it? uh, huh, yep. Well, it will need to be welded in, so that is some cost consideration.
Clifford isn't quoting 15-20 HP ... or any HP number for that matter... I couldn't find it on FORDSIX either .. was just wondering where that HP number came from .. AutoKrafters sells it for $25 plus shipping ... said it can be epoxied or welded. Frank just pressed his in tight and the Header keeps it from moving or dislodging ...
The number came from Frank. Frank's (now mine) is sitting a drawer waiting to be installed. I will install it when I take the head off my parts car and have it reworked, ported, tricked out, etc. I have read that number before. I will have to find it. I think I read it in an article.
I'm confused ... Frank said he already installed one in your engine .... Plus you'll never go through the hassle of doing it so I think you should just sell it to me! Terry ... you do know it goes in the exhaust port correct? You don't need to remove the head ... just the headers to install it .. I did just find on Ford Six that they don't recommend a divider until you hit LEVEL III of their recommended mods .. I will be at LEVEL II since I have the stock camshaft ... According to AK the power of Cylinder 3 and 4 will be increased by up to 10% ... so my math indicates a 3 HP increase at most .... I can see where it may improve the sound of the exhaust though ... I'll see if they are willing to ship it for actual shipping charges.
Dan, the link to this article describes building a potent six. About 2/5 down it shows a picture an describes that it increase torque by 10%. http://mustangandfords.com/techarticles/5283/ According to that article and the book The Ford Falcon Six Cylinder Performance Handbook, it is recommended to use the port divider even if you are not using a header. "It is eesential in creating more equal flow from each cylinder, by separating the Siamesed exhaust ports of cylinders 3 and 4." The book discusses the port divider in both the exhaust section and the head section. The book goes on to say, "It will take about an hour of grinding and hand fitting. Weld the center exhaust port divider into the head. Use the center port divider whether you use headers or not. Shape and port the divider to match the other ports. I think the use of the header with the port divider gets the 20 hp. I really think the divider maximizes the exhaust flow. With your engine out of the car and the easy access to remove the head, now is the time to install one. You need to take the head off to be able to prevent grindings from getting down in the head and and you can flush it out before re-installing it. Like I said, I have one and will install it when I replace the head. I would not attempt it with the engine in the car. I only mentioned it to you because you have an engine out of the car. Would you like to borrow this book?
I would like to borrow the book ... I thought all the grinding is done on the port divider to get it to fit properly. Don't you grind, fit, remove, grind, fit, remove .. until it's fit properly? There shouldn't be metal filings in the head ... Thanks for the Link .... The "teeth" in the exhaust port that the divider locks into are already there ... it's just a matter of massaging the divider for a good fit ... I think the starter fitment may be OK ... The Mustangs Unlimited Headers look nothing like the Clifford headers
I have a Clifford coated header. 95% of the grinding is done on the port divider. If you choose, you may do some on the head if you wanted to make sure the ports were equal. If you weld it in, then you would need to do a little grinding for that. I'll have the book available with the hoist.
