Hi Listers,
I'm about to install a Crane fast-road cam (3/4? - this is the same cam sold
by Moss as their fast-road cam for the TD) and an exhaust header in my 53 TD
to help compensate for a 4.3 ring & pinion I just installed. I have a few
questions for the collective wisdom of the list:
1. I always degree in a new cam, especially a non-stock spec. cam like
this. Do I need to use an offset key on the cam sprocket in order to do
this? If so, where can I get offset keys with specific amounts of offset?
Or, how do I make my own to the required spec?
2. The cam calls for 9.5 compression ratio. I could probably get away with
less, but I don't know how much has been skimmed from the head in the past.
What is the original thickness of the head so I can tell whether more can be
skimmed, or perhaps it's already at or beyond the required spec? Do I need
to cc the chambers to determine the current state, or is there a more
straight forward approach?
3. Any opinions about 1 1/4 vs 1 1/2 SU's with this cam and header? Right
now I'm inclined to use richer needles in the 1 1/4's in order to maintain
the velocity of the intake gases. Any suggestions for SU needle numbers to
try? Any other approaches worth trying? A supercharger would sure be a
nice solution.....
Any suggestions/opinions will be most welcome.
Regards
Marty Klein
drzzzz@compuserve.com
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