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Author Topic: Andrews 48H  (Read 5151 times)

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nidan

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Andrews 48H
« on: April 05, 2010, 10:16:18 AM »

Andrews recently posted specs for their new 48H cam , for reference the 54H numbers are up.  attached is a dyno from a 96" with D&D fatcats


  broad tip cams for baggers  max torque at low and mid RPMs. -an option for those running 255's



                         Duration Valve Lift @
Part# Grind Timing(*) CL** .053 .020 Lift TDC    Springs Application                      
 
216348 48H  INT 13/29     98    222 257 . 548  .153  Stock
            EXH  43/15    104   238 273   .548 .163
 

216354 54H INT 16/42    103    238 273 .555 .165 Stock
           EXH 43/15    104    238 273 .555 .158
« Last Edit: April 05, 2010, 10:18:51 AM by nidan »
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skyhook

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Re: Andrews 48H
« Reply #1 on: April 06, 2010, 11:04:27 AM »

255 specs per big boyz head porting calculator:

           lift    open    close    duration    tdc lift

intake   .550   6          25          211       .079
exhaust .550   48        7            235       .070

i like the 48h...more intake duration...more overlap...higher tdc lift...should make similar torque and pull longer than the 255
« Last Edit: April 06, 2010, 11:07:10 AM by skyhook »
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08 fxdse2, r&r heads, 257 cam, hpi 55mm t/body, supermeg

nidan

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Re: Andrews 48H
« Reply #2 on: April 07, 2010, 07:40:42 AM »

I'v been hunting around for a bit more on them , it looks as though Hillside was involved in spec' s .

Andrews recommends the 54 for larger motors, both are said to run cooler than the 255 and have a little broader curve.
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CVO -'02 FWDWG3 Stage IV 95 -sold
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HD Street Performance

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Re: Andrews 48H
« Reply #3 on: April 07, 2010, 08:33:24 AM »

The new offerings by S&S are right there with their "easy starts". There is a flood of these new short cams
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eleft36

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Re: Andrews 48H
« Reply #4 on: April 16, 2010, 09:44:47 PM »

103" With 48H
Corrected Compression  10.4:1       
    Cold Cranking Compression  215.6@ SL
A.T. B Boyz calc

Start prob?
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aka_Matt

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Re: Andrews 48H
« Reply #5 on: April 17, 2010, 12:21:41 AM »

103" With 48H
Corrected Compression  10.4:1       
    Cold Cranking Compression  215.6@ SL
A.T. B Boyz calc

Start prob?

i would use the 54H with that set up...
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Re: Andrews 48H
« Reply #6 on: April 17, 2010, 09:51:17 AM »

There's a pinger in the works, I would not go there
The 54 would be better and Woods TW408-44 better yet
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