Re: 4/7 Cam Swap

["Gary H." <spigot2039@xxxxxxxxxxx>]

If you get a chance, read through the "Hot Rod" article I put a link to; it reports that there is disagreement even among the top motor builders as to the benefit of such a technique. Of course, in the high dollar, highly competitive top ranks of racing *any* small advantage is sought. I don't think it is worth the effort for weekend warrior racers. 

Thanks,
Gary H. 

-----Original Message-----
 
>Does it really give you anything extra? I was looking around for some
>definitive numbers and I can't seem to find any. That would be a
>nightmare for anyone working on the car besides the person that did it
>though! Could you imagine the cursing while trying to get the firing
>order correct if you didn't know it was messed with?
>
>-- 
>Bill M 
>On Thu, Oct 22, 2009 at 9:03 PM, Tom Watters <tomwatters@ > wrote:
>>
>> There are 4/7 swaps for mopars as well.  I remember hearing from a friend in
>> colorado saying he was thinking of putting one in his '65 when he put it
>> together.
>>
>> I also saw a thread on Moparts about it some time ago.  Found the thread in
>> the Race Section ->
>> http://board.moparts.org/ubbthreads/showflat.php?Number=4787668
>>
>> I've personally never seen one on a mopar that I know of, but, there are
>> some tricks to getting that extra little umph from a setup.
>>
>> --Tom
>>
>> Gary H. wrote:
>>>
>>> A 4/7-swap cam changes the engine's firing order, moving the power stroke
>>> for cylinder 4 to where 7 used to be, and vice versa. Seems to be from a
>>> Chebby perspective.
>>> http://www.hotrod.com/techfaq/113_0701_lunati_cams/index.html
>>>
>>> Thanks,
>>> Gary H.
>>> -----Original Message-----
>>>
>>>>
>>>> What's a "4-7" cam?
>>>>
>>>> --
>>>> Bill M


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