by Kruse <kruse@[EMAIL PROTECTED]
>
Apr 28, 2008 at 04:27 PM
On Apr 28, 5:08 pm, Gene Wagenbreth <genewxxx@[EMAIL PROTECTED]
> wrote:
> Dont know about the 302/351 distinction, but a friend did a valve
> job on a Bronco 351 . When he put it back together he did the
> firing order as labeled on the intake. It backfired, etc. A mobile
> mechanic came over and said the firing order on the intake was
> incorrect. He redid the wires and it ran fine.
>
> I always wondered about that.
>
> G
Ford changed the firing order of the 302 to the 351W firing order.
Really all they did was change the camshaft and it only changed the
order between two cylinders. I've been told they did it because over
the years a lot of engines were ruined because of crossfiring between
the plug wiring that would cause preignition on the firing order of
the old 302s. Can't say for sure that it is true though.
The OP has me puzzled unless somebody actually put an older 302
camshaft into a 351.
