[DeTomaso] Techno question: 4/7 Swap Cams for 351Cs

[Thomas Tornblom]

MikeLDrew at aol.com wrote:
> In a message dated 7/1/06 19:51:07, cengles at cox.net writes:
> 
> <<         Thanks for that information.   It clarifies the lack of a "4/7 
> Swap Cam" for our Clevelands, since they already have it.  >>
> 
>>>> Uh, no.  They don't.
> 
> Bill wrote:
> 
>>  When Ford changed the V8 firing order for the 351 and 5.0 engines, they 
> implemented the "4/7 swap."
> 
>>>> He is speaking about the fact that the firing order was changed sometime 
> in the 80s on the 302 and 351W.  The earlier small-block Fords (including the 
> 351C) utilize the older, less-efficient firing order.

Umm, I don't think so.

The old engines, from about 63-64, both big and small blocks, used the 
1-5-4-2-6-3-7-8 firing order. The Cleveland, the 351W from 1969 as well 
as the HO 5.0 engines use the 1-3-7-2-6-5-4-8 firing order, so I think 
you got it backwards. Or why would they change to an inferior firing order?


> 
> Or so it seems to me...
> 
> Mike
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Thomas