The four plug wire connections that are known.
So as an introduction, I'm on my 3rd dent and I now have a 1979 f100 short box converted to a flat bed and has a 351w. The motor had been 302 going by vin but one of the prior owners swapped it out. So now this past weekend I pulled my intake to drop on a 4bbl with an edelbrock(just waiting on the carb to come in as I just sealed up the intake and hooked up all I could without it). I took a few plug wires after I labeled then, but didn't think about numbering the dizzy somehow. I did catch it after I just one side off but the other I labeled both wires and dizzy. But now I have a bit of an issue...going by the order labeled on the intake I pulled the order doesn't match, it does not match any of the orders for a 302ho or the non ho and 351w or the 351c/m/400. I am just outright **** brained right now, I make mistakes but now with the firing order not matching what it should be it's just throwing a curveball at me. Though working on the truck there's been quite a few things off with it such as a backwards brake pad, screwed ip vac connection for the choke and a few other things so if anyone has any ideas of what the order might be it'd be greatly appreciated. Yes I know the block is a 351w, it was stamped on the block and it's a 1975. I'll try and attach a picture of the 4 wire connections and see if anyone can make heads or tail of it.

 

Welcome to FTE! Lots of good people here.

I'd go with the firing order on the intake manifold

 

Ok I was just curious about that since it ran smooth before I took it down. Hopefully I'll get the carb tomorow and it'll purr like a kitten I just needed a slight power boost as the 2bbl was a little sluggish. If that doesn't work after I hook it all back up I'll probably be back on here

 

hello depending on the camshaft if it is a 351w 13726548, or older 302 15426378
good luck!

 

It has to be one of the 2 firing orders. When I put my 408 stroker together all I could do was get it to stutter and putter, but wouldn't run. Found out they gave me a cam with an old 302 firing order by mistake. Swapped the 4 plugs around and purred like a kitten with the first turn of the ignition.


The cams are interchangeable.

 

We'll sorry for the late reply but putting it to the firing order that was on the old manifold works like a charm and no issues as of now minus the extremely rare dieseling which I believe is due to heat soak as I deleted the egr plate since I went to a 4 bbl so now I just gotta find a good spacer and call it for that.

 

congratulations - glad you got it going! And thanks for the update...we like pictures and updates.