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I'm trying to get headers for my 84 f150 with a 351w out of a 97 250. Summit has hedman headers but the ball and sock put a wrench in some of my plans. Are there other options? I don't need egr or o2. I hope to have a 3 bolt flange 3" diameter collector. I already asked about it in the engines forum but i figured I'd cross post. I might be SOL but I'm hopeful. 2.5 inch diameter 3 bolt would also be helpful. Really I'm just trying to reuse some of my old exhaust.
I'm no expert, but from what I read here over the past few years, seems most guy recommend shorty headers for these trucks.
Either way you're going to have to FAB up the exhaust to connect to them. They say shorty's keep heat away from the starter, and seem to make more low end power.
I'm no expert, but from what I read here over the past few years, seems most guy recommend shorty headers for these trucks.
Either way you're going to have to FAB up the exhaust to connect to them. They say shorty's keep heat away from the starter, and seem to make more low end power.
Huh i thought i had seen that long tube helps more for low end maybe i got faulty info. I'll take a look into shorties i guess
Yeah, for us old guy's I think maybe it is common knowledge. Smaller ports help low end torque.
Back in the early 1970s I was lucky enough to have the owners of the local Speed Shop in Portsmouth, NH guided me with my 1970 Duster 340 4-speed. They used to race one, before moving onto a B/Super Mod Nova. They set me up with a fun street car that as I put more performance parts on over the coming the years, it all would come together, 1 5/8" tube headers was what they started me out with, not bigger tubes, for the 284 duration cam.
Huh i thought i had seen that long tube helps more for low end maybe i got faulty info. I'll take a look into shorties i guess
Headers do help in many different ways. But most of the time unless you are racing, they are not worth the trouble. The fit is lousy. The exhaust is custom and hangs down low and in the way. You can't hardly get the starter off, the sparkplugs are harder to get out, etc.
Headers do help in many different ways. But most of the time unless you are racing, they are not worth the trouble. The fit is lousy. The exhaust is custom and hangs down low and in the way. You can't hardly get the starter off, the sparkplugs are harder to get out, etc.
Fair. At the very least I'd like an upgrade from the stock manifolds
I installed the Hedman shorties on my 302. The fit was okay and the stock exhaust bolted up with just a minor tweak. I had to spread the y pipe about a half inch. But, I started tallying up modifications to bolt on accessories, dip stick, coil bracket, upper intake support. And since I decided to keep the cats and run a stock cam I deemed them unnecessary. The accessory issues wouldn't have been that hard to overcome, I just chose the easy way at the time. I used the stock manifolds.
Mock up with the Hedman Hedders
I stored the headers on the shelf next to the performance cam I also deemed as unnecessary and potentially a problem with the stock ECM.
I installed the Hedman shorties on my 302. The fit was okay and the stock exhaust bolted up with just a minor tweak. I had to spread the y pipe about a half inch. But, I started tallying up modifications to bolt on accessories, dip stick, coil bracket, upper intake support. And since I decided to keep the cats and run a stock cam I deemed them unnecessary. The accessory issues wouldn't have been that hard to overcome, I just chose the easy way at the time. I used the stock manifolds.
I stored the headers on the shelf next to the performance cam I also deemed as unnecessary and potentially a problem with the stock ECM.
Maybe I'll use them on the next build
If my stock manifolds looked anything like those I'd use em but I'm fairly certain i have the shotty style:
Hoping to have a bit more breathability than these.
If my stock manifolds looked anything like those I'd use em but I'm fairly certain i have the shotty style:
Hoping to have a bit more breathability than these.
My photo shows the mock up with the Hedman Hedders (Hedman spells headers). The stock manifolds I used are like yours.
My original exit port studs were shot and I picked up a nice stud kit with heavy duty brass nuts at Advance Auto Parts
My photo shows the mock up with the Hedman Hedders (Hedman spells headers). The stock manifolds I used are like yours.
My original exit port studs were shot and I picked up a nice stud kit with heavy duty brass nuts at Advance Auto Parts
Ah my bad i was wondering why they were so different.
If my stock manifolds looked anything like those I'd use em but I'm fairly certain i have the shotty style:
Hoping to have a bit more breathability than these.
Headers do help in many different ways. But most of the time unless you are racing, they are not worth the trouble. The fit is lousy. The exhaust is custom and hangs down low and in the way. You can't hardly get the starter off, the sparkplugs are harder to get out, etc.
Depends if they're sized appropriately. The perfect header would be one that changes tube size based on rpm, of course this doesn't exist, so they have to be sized for the application. Small tube size for a truck makes a big difference in low rpm hp, and great crispy pedal feel.
Any time I have to do exhaust repairs, I just buy long tubes for whatever it is. Some trucks, I install long tubes when I first get them, depending on the engine.
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