I was looking to pick up some headers but i'm not sure of which ones to get, i found ones made by hooker that sound nice, does hedman or any other company made a nice set of headers for this engine that will liven it up a bit? Also, how much do thay sell for? Thanks.

 

Yup, Hedman part # 89-300, IIRC, $129.99 from Summit and Jegs both. I've been running a set on my 82 since 00....

Hmm, they went up...
http://store.summitracing.com/partde...rt=HED%2D89300
$135.99 now....
Evan

 

Any that fit a 93 F150 4x4?

 

Define "fit". Bolting on and working are two different things. I've been running Hedman's on my 90 2wd for almost 4 years. They were well worth it to me. Very good torque gains down low, but the hp doesn't increase much because the rest of the engine can't keep up. My truck dyno'd 145 hp@3000 rpm and 272 ft-lbs @2000 a few months ago. My boss has a GMC Yukon with a 350 and it only does about 250 ft-lbs and it takes another 1000 rpm for it to do it and it is mildly modified. There are rather large gains, but there is a price. If you can't do the install yourself you should expect to spend several hundred dollars on the installation. The alternator bracket must be moved away from the block with spacers (stock belt still fits) and notched heavily, the O2 harness must be lengthened about 4", the EGR and AIR need replumbed if you will be keeping them, and you have to have a whole new exhaust system. After all that work you will find that the PCM is running at the very edges of its abilities with the stock injectors. Anytime the battery is unhooked it will take around 150 miles for the truck to run right again. You can get around this by going to 19lb fuel injectors, but then you need an adjustable fuel pressure regulator which is not available for the 4.6; you have to make a bracket to run a 5.0 regulator. The truck will still not run perfectly, but will be much stronger than stock.

 

I have a 86 4x4 with a carb. think those hedmans will work on it? There's no smog pump in the way and I have a straight pipe and my dad's an awesome welder. do you see any problems?

 

Yup, you may have some clearance issues at the transmission x-member, but, I never had any problems, and, I ran the truck both 2wd and 4x4, with many different tranny and transfer case combinations.
Evan

 

So there really isn't any difference in the 2wd to 4wd headers for this engine? I'd rather not pay $325 for hooker headers that say they are for 4wd when i can spend 135 for the 2wd ones that are just the same. i'm sure I can do all that is mentioned to get these suckers to fit, hell, I just recently swapped out the TTB for a D44 solid by myself.

Will 19lb injectors from a 302 fit in this engine? I saw somewhere that it is cheaper to buy all 8 injectors for a 302 (all 8 are sold togeather, not separate) than it is to buy 6 for the 4.9. I'll prolly just look for 19lb injectors in the junkyard at first, just clean them up. As for the computer, could i get a computer out of a different vehicle and have it reprogramed for the new engine improvements and just swap mine out with it? Thanks

 

Hey everybody, I gots a question for this thread....

I was looking at the Hedman Headers for the 4.9L 300 L6 and all they said was a slight modification to the exhaust to retain the catalytic converters. Is this the only modification neccessary to install this header?

I am replacing my entire exhaust anyway, so building a custom exhaust isn't a problem. I just want to start at the headers and work my way back if possible. For ease of simplicity mostly.

Any thoughts would be appreciated. Thanks....

-TxBullRyder-

 

I haven't been under my truck for a while "thankfully", I have a 4 spd manual, luckly I've had no fatal problems with the drivetrain yet, anyway define X member for me, unless you are talking about the cross member then I know what you mean, and that shouldn't be a problem, b/c I don't think those headers are that long are they? Are these headers double 3's or a single outlet?

Redneck-Cowboy

 

The hedman is a dual collector design. On an EFI 300, they run the front cat as a Y-pipe, so, the header would probably be easily hooked into it, you may have to reposition the cats though.

The headers do come back a fair bit, I'll grab a couple pics tomorrow, my 82 just happens to be sitting with the body off....
Evan

 

If you look futher up the thread I said I had a straight pipe, so no cats to worry about, anyway I assume since you didn't mention anything about the crossmember that I'll be alright?

Redneck-Cowboy

 

The bit about the cats was in response to TXbullrider.

As far as the transmission crossmember goes, it depends entirely on your setup, I can say that I never had any problems, and, my exhaust system had NO bends in it at all. You may need some custom bent tubing to clear the crossmember, or, you might get lucky like I did.
Evan

 

Do you have striaght pipes on the dual header and if so how does the truck sound? I have just a single striaght pipe and it sounds kind of dieselish, but if I were to go true dual do you think it would sound V-6ish if I split the exhaust to the corners of the bumper?

Redneck-Cowboy

 

I open headers, and then straight pipes with glasspacks(exhaust system ended at the back of the cab, and the 'packs did nothing).... It sounded NOTHING like a V6.... But, keep in mind, mine has a rather large cam in it....
http://www.bigblocksix.com/f100swb/cammed.mp3
http://www.bigblocksix.com/f100swb/cammedrev.mp3

Personally, I liked the turbo mufflers I had on it.
http://www.bigblocksix.com/f100swb/f...300turbos1.mp3
http://www.bigblocksix.com/f100swb/f...300turbos2.mp3

If the links aren't working, the server is down, yet again... LOL
Evan

 

Thanks guys for the help.

I'll probably look at getting the Hedman Headers pipe for my truck and then take it to my mufffler shop and have them custom build my exhaust. That way the pipes will clear the crossmember with any complications.

I have debated dropping the catalytic converters completely, but I need to look into Texas State Law concerning vehicle emissions equipment.

My truck is almost old enough to be exempt fror the law but I need to double-check just in case.

Thanks for the help guys, I'll let you know how it goes...

-TxBullRyder-