Im gonna purchase a set of headers for my 1978 f-150 but the ones i found says it fits a 351/5.8 and a 400/6.6? are the heades the same on the 351 5.8L as the 400? i thought the 400 was bigger. Or are they talking about a 351M 5.8L? is a 351M a 5.8L? heres the link. my question is will these headers fit a small block ford 302/351W?

http://store.summitracing.com/defaul...4923428+301734

says fits...

<TABLE class=appinfo cellSpacing=0 cellPadding=0 width="100%" border=0><TBODY><TR><TD class=appinfo>Make</TD><TD class=appinfo>FORD</TD></TR><TR><TD class=appinfo>Model</TD><TD class=appinfo>F-150 PICKUP</TD></TR><TR><TD class=appinfo>Submodel</TD><TD class=appinfo></TD></TR><TR><TD class=appinfo>Beginning Year</TD><TD class=appinfo>1978</TD></TR><TR><TD class=appinfo>Ending Year</TD><TD class=appinfo>1979</TD></TR><TR><TD class=appinfo>Engine Size</TD><TD class=appinfo>351/5.8L</TD></TR></TBODY></TABLE>

and fits....

<TABLE class=appinfo cellSpacing=0 cellPadding=0 width="100%" border=0><TBODY><TR><TD class=appinfo>Make</TD><TD class=appinfo>FORD</TD></TR><TR><TD class=appinfo>Model</TD><TD class=appinfo>F-150 PICKUP</TD></TR><TR><TD class=appinfo>Submodel</TD><TD class=appinfo></TD></TR><TR><TD class=appinfo>Beginning Year</TD><TD class=appinfo>1978</TD></TR><TR><TD class=appinfo>Ending Year</TD><TD class=appinfo>1979</TD></TR><TR><TD class=appinfo>Engine Size</TD><TD class=appinfo>400/6.6L</TD></TR></TBODY></TABLE>

 

My advice is to be sure and just call them and see for sure.
Glenn

 

As far as bolting up a header they are provided it is a 351M

Yes and yes

No

 

If they will fit the 400, They will not fit the 351W or 302.

 

351M and the 400 are the same block and heads, just a bit different inside. Not the same setup as the windsor.

 

so which headers can i buy for a 1978 F-150 small block ford? I want full lenght headers.

 

I assume you have a 351, are you sure it is a windsor? Small block isn't really a Ford term.