4lb vs. 5lb
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Joined: Sep 2004
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From: Texas
4lb vs. 5lb
have opportunity to get a 5lb for basically free. Currently I have 4lb and MP.
Current Race Tune
440hp
19/20"
11.8 A/F
16psi
would stepping up to a 5lb lower do much good? i know the blower works better the more you spin it, but im not about to throw an 8lb on there....
Current Race Tune
440hp
19/20"
11.8 A/F
16psi
would stepping up to a 5lb lower do much good? i know the blower works better the more you spin it, but im not about to throw an 8lb on there....
Senior Member
Joined: Sep 2000
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From: Olive Branch, MS, Memphis Burb
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From: DETROIT, (formerly Eaton County, Michigan)
Originally posted by JeffsLightning
Rememebr not all 4 or 5lb pulleys are equal. It's best to find out the diameter of the pulley...
Rememebr not all 4 or 5lb pulleys are equal. It's best to find out the diameter of the pulley...
one of the major tuners sells pulley's that are considerably larger than the other two. And people think it's the tune making all those trucks run 10's.
Senior Member
Joined: Oct 2001
Posts: 2,456
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From: SE Mich
My 4# lower is a JDM brand. And amazingly it's turned out to be about the same diameter of other vendors 5#ers. Hum.... 
Not that it's a bad thing.. it's just a more accurate to spec one with a diameter vs the "4lb" or "5lb" method.
Rich
Not that it's a bad thing.. it's just a more accurate to spec one with a diameter vs the "4lb" or "5lb" method.
Rich