RE: 318 Poly refresh time - Cam and gear drive info, please

["Raymond J. Henry" <62Dart@xxxxxxxxxxxx>]

Thanks. Oh, I'm sure that I'll tap the extra HP on cruise nights. But on the long trips, I'll be running gentle. Just trying to get the best of both worlds....  :)

-Ray


-----Original Message-----
From: 1962to1965mopars@xxxxxxxxxxxxxxxx [mailto:1962to1965mopars@xxxxxxxxxxxxxxxx] On Behalf Of Gary Pavlovich
Sent: June-05-14 12:41 PM
To: 1962to1965mopars@xxxxxxxxxxxxxxxx
Subject: Re: 318 Poly refresh time - Cam and gear drive info, please

Ray,

I would say the 256/.435" (208@.050") Solid or 256/.440" (206@.050") Hyd. 
Poly HP Cam profiles would be what you need want for both HP/Torque and mileage...but as I said in the previous e-mail (below) when people "feel" 
the increased torque or throttle response then they often drive more spiritedly and then the mileage may be affected.  It's like installing a four-barrel carb; the smaller primaries offer better mileage over the larger 2bbl. venturi/throttle blades but people make good use of the extra power on tap.

Gary P.

-----Original Message-----
From: Raymond J. Henry
Sent: Wednesday, June 04, 2014 5:24 AM
To: 1962to1965mopars@xxxxxxxxxxxxxxxx
Subject: RE: 318 Poly refresh time - Cam and gear drive info, please

While I've never had a poly refreshed (or rebuilt), I have done work to LA's that has resulted in better mileage and performance. Nothing major, but did like the extra HP provided by what we referred to as a "performance/economy cam", or "RV" cam, depending on the source. Too many years ago to recall the cam manufacturers, or if one performed better than the others. Regardless, the of- the-shelf LA cams aren't going to help me now.

Are there no poly cams available geared towards HP increase while still bumping the mileage?

-Ray


-----Original Message-----

Ray,

It sounds like you value MPG and you have a winning combination right now; I would stick with what you have as a cam change to the 256F would definitely give you more HP & Torque but this would also encourage you to use it and perhaps lessen your mileage.

Gary Pavlovich



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