Factory Headers

[gofast_beloud]

if i put bigger headers on is it going to make much of a different. my heads have been polished, exhuast, chip. and what are the factory sizes and what is a good size to put on.
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[NKau]

From what I understand, it's not neccessary to upgrade your headers until you upgrade to a better flowing head.

 

[302GT]

I didn't even notice a sound difference.The new ones look pretty but that's about it.If I had known it wouldn't really make a difference then I would have spent the $$$ on something else.I am happy with the look though.

 

[Thenemesis]

mine helped a hell of alot.. to me it did.. i have stock heads.. i dont even think port and polish.. i got the ford racing Big long stubes lol

 

[Stang8URMPRT]

Stock header primaries are 1 1/2 inches. They are good to about 280 rwhp before they become a restriction vs. other short tube aftermarkets. Not worth the money to buy them. For those that have headers (shorts) on a pretty stock car, and say it helped... they need to get their SOTP gauge recalibrated.

 

[Thenemesis]

lol i have ceramic coated longtubes.. so i dont need to lol

 

[quiksilver9531]

For those that have headers (shorts) on a pretty stock car, and say it helped... they need to get their SOTP gauge recalibrated.

whats a SOTP gauge, and have u had your stfu guage recalibrated yet?

 

[Stang8URMPRT]

whats a SOTP gauge, and have u had your stfu guage recalibrated yet?

Yes, it has been recently calibrated.. and it is saying STFU you ass clown

 

[Car RamRod]

didnt he say he had his heads ported and polished? If your plannin to build up ur car, your gonna need them eventually anyway so why not.

 

[Michael Yount]

My stock HO headers measured 1.43" OD - they're smaller than 1.5". My mild combo makes about 270HP at the crank. The dyno said we LOST 3HP when I added Ford Racing shorties - with no gain anywhere in the curve. I agree with I8 - unless you're up around 280-290HP, the stock headers - even though they look bad - aren't a restriction to peak HP.

However, on a near stock motor, a set of 1.5" primary long tubes has the potential to REALLY help bottom end and mid range.

 

[NKau]

didnt he say he had his heads ported and polished? If your plannin to build up ur car, your gonna need them eventually anyway so why not.

Because if he plans to run those heads for a while, he'd be futher ahead putting his money in suspension, or even an intake if he doesn't have one. But it certainly wouldn't be a bad idea if he plans on running different heads in the near future.

 

[Thenemesis]

dude my l/ts helped a hell of alot even with stock heads.. i dont see why it wouldnt for him.. i can see shortys causin a weird loss but.. i needed to flow better

 

[NKau]

Not worth the money to buy them. For those that have headers (shorts) on a pretty stock car, and say it helped... they need to get their SOTP gauge recalibrated.

I don't know, they say 100 lbs. of weight off of a car is worth 1 tenth in the 1/4; headers will lighten your wallet quite a bit.........

 

[Stang8URMPRT]

I don't know, they say 100 lbs. of weight off of a car is worth 1 tenth in the 1/4; headers will lighten your wallet quite a bit.........

 

[Thenemesis]

stang8 is that a laugh of how outrageous or laugh of yeah thats true lol it does.. damn manifolds like chunks of steel.. compared to my l/ts.. im serious lts are the only way to go

 

[Stang8URMPRT]

Wtf?

 

[Mavrick]

However, on a near stock motor, a set of 1.5" primary long tubes has the potential to REALLY help bottom end and mid range.

Music to my ears! I hope mine help my car as much as you emphasize! How many hp would these headers be good for? They are a Ford (SVO maybe, bought them used, guy said he bought them 10 years ago out of an SVO catalogue or something of the like) 1.5" longtubes, single flange - Pretty nice for $50!

Thenemisis: You really need to think before posting, i've thought that after reading your posts lately!

 

[HISSIN50]

i think someone is onto something - i have heard (but never seen) that those really heavy exhaust manifolds bring the car down.

i bet most of us got lucky and got the factory headers.