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% Overdriven Blowers without innercoolers

Old 04-07-2008, 06:12 PM
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Default % Overdriven Blowers without innercoolers

Im running a 50top/52bottom pulley combo for a 4% OD on 10-71's making 6.5psi no innercooler.
Just wondering what others run on their roots type blowers.

Last edited by Back4More; 04-07-2008 at 06:14 PM.
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Old 04-07-2008, 07:36 PM
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Originally Posted by Back4More
Im running a 50top/52bottom pulley combo for a 4% OD on 10-71's making 6.5psi no innercooler.
Just wondering what others run on their roots type blowers.
That's not much boost for 4% over on 10's. What cid?
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Old 04-07-2008, 10:04 PM
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Old 04-07-2008, 10:09 PM
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509", 52 lower, 48 upper, 7% over, 871, 8PSI,
Your #s sound correct to me for cubes and blower.
Steve
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Old 04-07-2008, 10:32 PM
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I would have expected 7.5 to 8psi with a 10-71
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Old 04-08-2008, 01:08 AM
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Really all depends on camshaft. Cam size can make all the difference in the world regarding boost pressures.

P.S. Chris, your rods are on the way.

Eddie
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Old 04-08-2008, 06:03 AM
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Yes, camshaft plays a valuable role in what your net boost gain is. What static compression are you at?
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Old 04-08-2008, 10:16 AM
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8:1 Static CR, Hyd Roller 248/258 with .600+ lift and Canfield 350cc Alum heads.

Last edited by Back4More; 04-08-2008 at 10:20 AM.
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Old 04-08-2008, 11:45 AM
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Hi Mark!

I have almost the same set-up as you and is works great
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Old 04-08-2008, 02:46 PM
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Hey, Where you been?
I saw something that reminded me of your old setup...
http://www.offshoreonlyclassifieds.c...o22479-en.html
Attached Thumbnails % Overdriven Blowers without innercoolers-22479.jpg  
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