2 Inch headers??

[Power By Ford 70 F250 4x4]

Does anyone know where I might find 2 inch headers for a 1970 f250 4x4 360cin.not hooker,not gibson,not summit.Where else would I look,they seem to only have 1 3/4 Any clues

[Dragon]

2 inch tubes would make your engine sick. Really Besides the tubes would barely fit in any engine compartment.

Diggers (AA/FD) and Funnies use 2 inch pipes but their exhaust is blown out not scavenged out by the other cylinders.

All normally aspirated engines with headers depend on scavenging (exhaust gas acceleration) caused by the vacuum of the other cylinders sucking on the ends of the tubes as they vent their hot gases. If the primary tube size is too big the tubes lose velocity and scavenging fails.

[Power By Ford 70 F250 4x4]

I'm useing edelbrock performer RPM heads and they said for best performance use 2 inch tubes.Now maybe thats not possible but I'll look a little longer. This is bored to a 418.It also has edelbrock intake,4 barrel,Harland Sharp roller rockers and Performer RPM camshaft.

[Dragon]

Edelbrock does wow

Actually I just searched in all my edelbrock install PDFs and no where do they mention 2 inch headers for FE engines.

[Redcap]

That is just plain wrong.

[convincor]

This is bored to a 418.

How is a 360 bored to 418?

[mrtleavitt]

I believe on Edelbrock's Dyno chart, there's a caption that says their built 390 was dynoed with 2" hedders.

[fomocoguy]

This is bored to a 418.

How is a 360 bored to 418?

Maybe .060 over with a 428 crank....

EDIT: funny, I just saw 418" FE in your sig. How did you do it?

[convincor]

This is bored to a 418.

How is a 360 bored to 418?

Maybe .060 over with a 428 crank....

EDIT: funny, I just saw 418" FE in your sig. How did you do it?

Close, it's .040" over with a 428 crank.
4.090" bore x 3.98" stroke = 418.321 cu.in.
http://www.csgnetwork.com/cubicinchdispcalc.html

[convincor]

The only 2" I find are Mustang/Cougar applications
http://www.summitracing.com/search/Depa ... Rank%7cAsc

Otherwise Mustang/Fairlane 1-7/8" or 2-1/8" Hooker SuperComp.
http://www.summitracing.com/search/Depa ... Rank%7cAsc

[Dragon]

I have had Hooker 1-7/8s several times and even in trucks they can be a tight fit.

[convincor]

I have had Hooker 1-7/8s several times and even in trucks they can be a tight fit.

On a FE? Did you use car headers?

[Dragon]

NO racing headers not street headers.

[convincor]

maybe they don't make them any more??
I can't find them.- http://www.holley.com/division/Hooker.asp#46

[Dragon]

I never saw them in the catalog in the later years but in 1986 I bought Hookers for a 4 cylinder hemi and got 1-7/8s for it and the catalog then( paper) did not list them.

Funny too that you go to Hooker now and where are you really On the Holley site. With very limited search functions. If you search for the headers they give you a phone number to call. So I did I will see if they do larger tubes anymore. I used my 67 Mustang 390 1-7/8s in my race truck to save money but I had to dent the floor board on the passenger side. It did not matter there was no seat on that side.

http://www.fordpowertrain.com/Fe4x4.htm
Nice