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-   -   Long tube header question (https://67-72chevytrucks.com/vboard/showthread.php?t=391688)

olred68 03-12-2010 08:11 AM

Long tube header question
 
If I run longs tubes how low can I drop the frontend without the headers draging on everything?

Hottrucks 03-12-2010 08:27 AM

Re: Long tube header question
 
you can't ......I think the best solution is these then you can tuck things up pretty easy

http://www.kmjent.com/cart/product.p...8&cat=0&page=1

gmcdude 03-12-2010 09:01 AM

Re: Long tube header question
 
I have long tube headers on mine and they don,t drag, I have 4 inch drop up front, but I runing 20 inch wheeels.

Hottrucks 03-12-2010 09:09 AM

Re: Long tube header question
 
good point...now much drop are we talking here

Jim_PA 03-12-2010 09:49 AM

Re: Long tube header question
 
Sure, a shorty header is better than manifolds, but I wouldn't run those unless the world was coming to an end, and they were the last headers on earth.

Hottrucks 03-12-2010 10:16 AM

Re: Long tube header question
 
Quote:

Originally Posted by Jim_PA (Post 3855957)
Sure, a shorty header is better than manifolds, but I wouldn't run those unless the world was coming to an end, and they were the last headers on earth.

Ummmm...WOW...ummm why not they clear everything and get your exhaust above your frame rails..or is it a brand issue??

olred68 03-12-2010 10:36 AM

Re: Long tube header question
 
its a money deal I have a set of long tubes and I want to drop it 3" so not sure what I should do

petey-pablo 03-12-2010 10:40 AM

Re: Long tube header question
 
I am running Long tubes with a 4 1/2inch front and 5inch rear drop and I have to be careful with speed bumps even going up into my garage slight incline the cement is uneven by alittle and hits the collecter,My temp fix is a 1/2inch piece of plywood that I drive up on the passenger side each time I go in and out of the garage:lol:. If I knew how to weld I would cut 1 or 1 1/2 inches off each tube of the headders to bring them up, I think thats all I would need.

Jim_PA 03-12-2010 03:28 PM

Re: Long tube header question
 
Quote:

Originally Posted by Hottrucks (Post 3855990)
Ummmm...WOW...ummm why not they clear everything and get your exhaust above your frame rails..or is it a brand issue??

It's a performance issue. I don't care who makes them, shorty headers are just a step above ram horns.

See below for example. I'm sure this is one of many similar articles out there proving this point.

http://www.fourwheeler.com/techartic...ers/index.html

ShredSled 03-12-2010 04:22 PM

Re: Long tube header question
 
I'm kind of curious about this issue as well...

oh, and it seems those Gibson shorty headers are a very exteme example. The ones in that other link look more like mid-length, similar to Thorley Tri-Y's....

Jeffs70 03-12-2010 06:04 PM

Re: Long tube header question
 
Quote:

Originally Posted by Jim_PA (Post 3856486)
It's a performance issue. I don't care who makes them, shorty headers are just a step above ram horns.

See below for example. I'm sure this is one of many similar articles out there proving this point.

http://www.fourwheeler.com/techartic...ers/index.html

so my new hugger headers would just be simply like running stock manifolds then ? vs long tube headers? that are causing a problem with lowering our trucks.

I had long tubes before when I had a 4" drop and they just about dragged every place. so I went to huggers and haven't tested them as of yet. but not that I would be out of money cause they was free lol.

GASoline71 03-12-2010 06:35 PM

Re: Long tube header question
 
Quote:

Originally Posted by Jim_PA (Post 3856486)
It's a performance issue. I don't care who makes them, shorty headers are just a step above ram horns.

See below for example. I'm sure this is one of many similar articles out there proving this point.

http://www.fourwheeler.com/techartic...ers/index.html

Yep... headers are all about scavenging exhaust gasses quickly. Shorty's defeat the purpose.

I have plain ol' Heddman Street Hedders, full length... they tuck up along the frame pretty nice. They're the ones I'll be using when I drop the rear 4" and the fron about 2".

My Dad has the same headers on his 1970 C10 and that thing is lowered 5" in the back, and close to 3" in front. They don't drag...

Gary

olred68 03-12-2010 06:47 PM

Re: Long tube header question
 
Well I have a set of flowtechs and I hope when I install they dont hang to low below the frame I want 2 1/2 drop spindles and 1" coils

Jeffs70 03-12-2010 06:56 PM

Re: Long tube header question
 
Quote:

Originally Posted by olred68 (Post 3856832)
Well I have a set of flowtechs and I hope when I install they dont hang to low below the frame I want 2 1/2 drop spindles and 1" coils

this is my issue I want the horsepower and no back pressure but then I dont want the headers to hang lower then the frame due to I am going to have 2 1/2 drop spindles and 3" drop coils in front. so that maybe an issue with headers unless I guess I fab my own or someone already sales them to not hang to much below the frame.

GASoline71 03-12-2010 06:59 PM

Re: Long tube header question
 
Quote:

Originally Posted by olred68 (Post 3856832)
Well I have a set of flowtechs and I hope when I install they dont hang to low below the frame I want 2 1/2 drop spindles and 1" coils

I tried Flowtechs on a 1967 C10 awhile back. The thing I didn't like about them is they have a slight downward angle at the very short collector. Made hooking up the exhaust a pain as I had to notch the tube slighty to get them to line up right.

They also dragged on speedbumps after I lowered it.

Gary

Strut 03-12-2010 07:46 PM

Re: Long tube header question
 
I had Hedmen's long tube headers on my 72. It has a 3 front/5 rear drop....

http://i295.photobucket.com/albums/m...9/DSCN1939.jpg

I plan on going lower so I changed the headers to Thorley's Tri Y headers....

Before

http://i295.photobucket.com/albums/m...9/DSCN2207.jpg

After

http://i295.photobucket.com/albums/m...9/DSCN2211.jpg

I also cut the rear cross member to run the exhaust through it....

Here is a picture of them side by side, you can see how much longer the Hedmans are:

http://i295.photobucket.com/albums/m...9/DSCN2209.jpg

Jeffs70 03-12-2010 08:27 PM

Re: Long tube header question
 
Strut I am not sure its the pictures or not but in those pictures it looks to be as if those Thorley's Tri Y headers still stick down just as low below that tranny pan and frame as the Hedmans headers ?

big mike71 03-12-2010 08:36 PM

Re: Long tube header question
 
The ones Big Al has on his truck do not hang down at all.

Strut 03-12-2010 09:02 PM

Re: Long tube header question
 
They do hang down, but there not near as low as the Hedmans. They dont hang down past the front cross member like the Hedmans.... These Thorley headers are the same part# as BigAls....

Jeffs70 03-12-2010 09:20 PM

Re: Long tube header question
 
Quote:

Originally Posted by Strut (Post 3857101)
They do hang down, but there not near as low as the Hedmans. They dont hang down past the front cross member like the Hedmans.... These Thorley headers are the same part# as BigAls....

ok awesome just what I was wanting to know thank you

ShredSled 03-12-2010 10:06 PM

Re: Long tube header question
 
yeah, if you look at those photos relating how low they are to the A-arms, it looks like those Tri-Y's give you quite a bit more clearance compared to that lower most primary on the Hedman's.

Also something else I'm kind of wondering is, what is the primary diameter on those Hedmans? 1 3/4"? Might have been a bit too much for your motor, stealing low-end and putting it up top. Might notice some good low-end gains with those more mid-length and smaller dia. 1 5/8" primary Thorleys.

Jim_PA 03-12-2010 10:17 PM

Re: Long tube header question
 
Yep, the Tri-Y's are what I run too, and they definitely don't hang as low as the hookers I had on there before.

Might sell them though for some 1 3/4" long tubes to go with the 383. Still haven't decided. Not sure if it's worth it... leaning towards keeping the Tri-Y's.

Jeffs70 03-13-2010 07:15 AM

Re: Long tube header question
 
I found some headers as I was doing some searching maybe you all can do something with these for laying frame also http://www.clearimageautomotive.com/...%20Headers.htm

ShredSled 03-13-2010 02:42 PM

Re: Long tube header question
 
Quote:

Originally Posted by Jeffs70 (Post 3857742)
I found some headers as I was doing some searching maybe you all can do something with these for laying frame also http://www.clearimageautomotive.com/...%20Headers.htm

nice find! Those look very tucked!

Jeffs70 03-13-2010 03:40 PM

Re: Long tube header question
 
Yeah I am thinking on getting those my self, wow they are pricey any more for headers.


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