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Header options for 351w stroker in 71-73' mach


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I currently have a 302 with c6 transmission in my 73 mach 1 which I am looking into getting a 351w/408 stroker crate motor for. On the motor it has dart pro 1 heads which have a slightly raised exhaust port on them .135" or 1/8" and angled plug connections. I have been having a hard time trying to find some long tube headers (preferably 1 3/4" primaries) that will fit this application as 351w didn't originally come in these years. Fpa's website show's that they offer them but that is not the case according to stan as the 71-73's have a larger steering box. Is anybody running a 351w/stroker in one of these year's with dart heads? And if so what are you doing for headers? Any info is much appreciated. Thanks 

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I don't believe the steering boxes on our cars are wider than the earlier ones. Even if they are, out engine bays are wider.

Hedman has 351w headers that fit '71-73s:

https://www.hedman.com/product-detail/88650

 

 

“If you can't explain it simply, you don't understand it well enough.”

--Albert Einstein

 

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Not sure if its an option for you or not but, we went with a mid length header on my wife's 70 with a 351W. They were Doug Thorley ceramic coated ones. I did have to massage one of the tube slightly at the aftermarket steering box. We were worried about ground clearance. They were a little pricey but were a very nice set of headers.

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  • 5 months later...

I have a 351w in my '73.  The headers are "summit" brand, ordered from summit racing.  I guess they count as long tube.  They had a 3-bolt collector flange that extended down around the transmission.

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  • 2 weeks later...

Manual trans car?

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On 5/3/2021 at 4:40 PM, giantpune said:

I have a 351w in my '73.  The headers are "summit" brand, ordered from summit racing.  I guess they count as long tube.  They had a 3-bolt collector flange that extended down around the transmission.

What transmission are you running in your 73?

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Posted (edited)
10 hours ago, Stangman73 said:

What transmission are you running in your 73?

It was originally an FMX.  Its a c4 now with a shift kit.  planning on a tremec swap at some point.

Edited by giantpune
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21 hours ago, Stangman73 said:

C6 

I have a set of Hedmans never installed. I missed the auto only application when I bought.

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