390 headers
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Fleet Mechanic
Joined: Jun 2007
Posts: 1,931
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From: Ohio
390 headers
has anyone hear put a set of headers on a 390 in an f100/f150 73-79?
I will in about a month, and my set is different than any set ive ever seen. On the pass. side the front two pipes go in front, down and around the engine mount, and the back two look to somehow bend around the starter and head down to the collector. the drivers side don't look bad, just don't know what will have to be taken off periodically to get the header in.
Just wondering how easily/hard they go in and any tips for installation. The manifold bolts are all loose (as in none will snap. i can get them off no problem). so thats out of the picture thank God.
And do headers really wake up this engine?
I will in about a month, and my set is different than any set ive ever seen. On the pass. side the front two pipes go in front, down and around the engine mount, and the back two look to somehow bend around the starter and head down to the collector. the drivers side don't look bad, just don't know what will have to be taken off periodically to get the header in.
Just wondering how easily/hard they go in and any tips for installation. The manifold bolts are all loose (as in none will snap. i can get them off no problem). so thats out of the picture thank God.
And do headers really wake up this engine?
Senior User
Joined: Jun 2006
Posts: 198
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From: Vacaville, Ca
Don't know how much of a difference there is but on my 70 F350 just had to lift the left side a few inches & they went in just fine, right side came down from the top, I have a C6 trans & had to smash the pipe in so the shift lever didn't rest on the exhaust
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Fleet Mechanic
Joined: Jun 2007
Posts: 1,931
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From: Ohio
well the pass side splits in two, after you cut the rest of the flange where the pre-cut is. and it supposedly fits around the pedestal or whatever you call it that the mount bolts to. i don't mind if i have to grind some of it away, but the starter seems to maybe be in the way. i'll find out i guess lol
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Joined: May 2010
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What brand headers are those? I wouldn't cut that flange as your probably gunna have to lift that side up as well.. The starter is a tight fit, even with a mini starter it can be a real pain, as you'll find out soon enough.. A bit of a juggling trick to it.. Re-Build the starter or go with a mini-starter when it's out and use heat wrap on it as it will sit real close to the pipes... do a search a read some previous threads on the subject...
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Joined: Sep 2010
Posts: 258
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From: nicholasville, ky
my dads truck has a 360 with headers similar to that. my uncle put them on and he had to jack the motor up a few inches to put them in. but it clears the starter fine, it is a little close tho.
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From: Long Island USA
I used headers just like those in my highboy. The passenger side came apart so you could install them without removing the motor mount pedestal or even jacking the motor up to clear the flange. They did clear the starter, and it took some moving it around, but I could replace the starter without removing the header.
I think, if you pull the starter, disconnect the passenger-side motor mount, and jack the engine up as far as you can go, you can install that header from the bottom by sneaking the header flange between the block and the pedestal. Removing the motor mount from the engine might help too.
I think, if you pull the starter, disconnect the passenger-side motor mount, and jack the engine up as far as you can go, you can install that header from the bottom by sneaking the header flange between the block and the pedestal. Removing the motor mount from the engine might help too.
Thread Starter
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Fleet Mechanic
Joined: Jun 2007
Posts: 1,931
Likes: 2
From: Ohio
What brand headers are those? I wouldn't cut that flange as your probably gunna have to lift that side up as well.. The starter is a tight fit, even with a mini starter it can be a real pain, as you'll find out soon enough.. A bit of a juggling trick to it.. Re-Build the starter or go with a mini-starter when it's out and use heat wrap on it as it will sit real close to the pipes... do a search a read some previous threads on the subject...
Thread Starter
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Fleet Mechanic
Joined: Jun 2007
Posts: 1,931
Likes: 2
From: Ohio
yea i just look in the and think it will be a tight fit. Can't tell until i get them in though, but i hope you word is good and they fit in my truck too.
Thread Starter
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Fleet Mechanic
Joined: Jun 2007
Posts: 1,931
Likes: 2
From: Ohio
I used headers just like those in my highboy. The passenger side came apart so you could install them without removing the motor mount pedestal or even jacking the motor up to clear the flange. They did clear the starter, and it took some moving it around, but I could replace the starter without removing the header.
I think, if you pull the starter, disconnect the passenger-side motor mount, and jack the engine up as far as you can go, you can install that header from the bottom by sneaking the header flange between the block and the pedestal. Removing the motor mount from the engine might help too.
I think, if you pull the starter, disconnect the passenger-side motor mount, and jack the engine up as far as you can go, you can install that header from the bottom by sneaking the header flange between the block and the pedestal. Removing the motor mount from the engine might help too.
Senior User
Joined: Aug 2010
Posts: 113
Likes: 0
From: Moreno Valley
has anyone hear put a set of headers on a 390 in an f100/f150 73-79?
I will in about a month, and my set is different than any set ive ever seen. On the pass. side the front two pipes go in front, down and around the engine mount, and the back two look to somehow bend around the starter and head down to the collector. the drivers side don't look bad, just don't know what will have to be taken off periodically to get the header in.
Just wondering how easily/hard they go in and any tips for installation. The manifold bolts are all loose (as in none will snap. i can get them off no problem). so thats out of the picture thank God.
And do headers really wake up this engine?
I will in about a month, and my set is different than any set ive ever seen. On the pass. side the front two pipes go in front, down and around the engine mount, and the back two look to somehow bend around the starter and head down to the collector. the drivers side don't look bad, just don't know what will have to be taken off periodically to get the header in.
Just wondering how easily/hard they go in and any tips for installation. The manifold bolts are all loose (as in none will snap. i can get them off no problem). so thats out of the picture thank God.
And do headers really wake up this engine?
Tight fit..makes changing the starter a Bear....
Use a Starter heat sheild
Better fuel economy and torque
Worth the swap
1952
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