1.5 ton header options

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Feb 12, 2017 | 10:00 AM

rmallow77

Thread Starter

5th Wheeling

Joined: May 2007

Posts: 44

Likes: 0

From: Enumclaw

1.5 ton header options

Hey everyone, just wondering what options are out there for headers (cast or tube) for a 1947 1.5 ton with a 239 c.i. flathead and original steering box? I also have to consider the dipstick, which is in the original configuration. The original exhaust manifolds I removed are in pretty poor shape, so I would be willing to just put replacement manifolds on it if necessary. The entire exhaust system is going to be replaced, so connecting to existing pipes is not really an issue.
Thanks in advance!

Feb 12, 2017 | 12:26 PM

38 coupe

Cargo Master

Joined: Aug 2010

Posts: 2,927

Likes: 135

From: Houston

Unless you do significant modifications to the engine you gain no power by adding headers. I'd get decent condition manifolds and put them back on. Save your money for other items.

Feb 12, 2017 | 02:10 PM

WQ59B

Senior User

Joined: Nov 2001

Posts: 259

Likes: 2

I put the Speedway steel headers ($120) on my truck, my manifolds were both broken/ eaten away at a few ports. Make sure you note the 2 larger bolts at the front of the block- I don't know why Ford did that but for a moment I thought I had stripped a front hole when using replacement bolts.
I went ahead and fabb'ed dual exhaust- I'm hoping to see another 5 HP.

Feb 12, 2017 | 02:51 PM

tacomacream

Fleet Mechanic

Joined: Sep 2007

Posts: 1,412

Likes: 23

From: East Wenatchee

I think that the headers are ok. We are just working on these trucks for our own entertainment anyway. It is not like you are going to take the truck to the track and try to improve the e.t.