Re: Looking for cam selection help

[MO <micher@xxxxxxxxxxxxxxx>]

Keep in mind that pistons alone does not determine the Compression
ratio.  The head c.c.'s after milling,  the thickness of the head
gasket and if the piston at TDC is below the deck determins the true
C.R.
 Also I think Dodger meant a 413 can be taken to 426( instead of 440)
If a sonic chech allows it........................MO

On Sep 17, 1:40 pm, Saff <hzf...@xxxxxxxxx> wrote:
> Yah, the piston people asked me that question and I wasn't sure what to
> say.  My son wants me to build an E85-only motor and suggested a CR of 13.5
> - 1 ... but I don't think I want to do that.  Others have suggested 10 -
> 1.  The piston folks say they can build me whatever CR I want.  So perhaps
> this needs to be changed to a question about CR ... so I could use some
> help here as I have no idea how to figure that out.
>
> I have a 3:55 gear in the backend, my tire size will be different than what
> they are now ( haven't decided for sure yet ), and I don't know the exact
> weight of the car.
>
> Jeez ... this is harder than when I picked out the cam for my poly ... just
> used what Gary P said to use :-)
>
> Thanks,
> Brian
>
>
>
> On Monday, September 17, 2012 2:20:44 PM UTC-4, Roger Pettigrew wrote:
>
> >  I would suggest holding off on the cam selection until you find out what
> > your going to end up with for CR (pistons),,,, your gearing, tire size, and
> > total weight are also considerations that need to go into cam selection.
> >    413 pistons are not everywhere, and usually more expensive than
> > 383-400-440, I believe that some have found it cheaper to have block sonic
> > checked and bored to 440 specs.
>
> >  In a message dated 9/17/2012 12:53:16 P.M. Central Daylight Time,
> > hzf...@xxxxxxxxx <javascript:> writes:
>
> > I'm rebuilding a 413 and am looking for some help selecting a cam.
>
> > Muscle Motors did their race-prep service on the block, bored it .030 over.
>
> > The 452 heads have been prepped by a local machine shop - milled the
> > heads, new valve guides, hardened seats.
>
> > Looking for a mild street cam as this is a daily driver during the nice
> > weather months with an occasional trip down the track.
>
> > I also need to find some pistons ( or have some built ) - help with that
> > process would also be appreciated.
>
> > Thanks in advance,
> > Brian Safford
> > '62 Dart 440 4-door / Poly 318
> > 2010 Challenger R/T
>
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