 do underdrive pulleys really help? |
 Aug 5, 2006 - 12:35 PM
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Enthusiast  Joined May 5, '05 From mattoon, IL Currently Offline Reputation: 2 (100%)  |
Just curious if any body had put an underdrive pulley on there car, and how much of a difference it made, or how much HP you gained,, thanks.
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Aug 7, 2006 - 1:49 PM
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 Enthusiast Joined Dec 27, '03 From Nor Cal Currently Offline Reputation: 0 (0%) |
The difference also depends on the engine. On the 5S... an UD pulley isn't gonna be as helpful as it would to a 7A. This has a lot to do with how the underdrive works, where in the powerband it benefits, and the type of engine. The 5S being the big stroker... will feel much less gains from mods that reduce crank load (UD pulley, light flywheel)... because it has a big stroke versus a short rod. The 7A too has a fairly big stroke for its rod length, but not quite to the degree of the 5S.
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Posts in this topic
nate95 do underdrive pulleys really help? Aug 5, 2006 - 12:35 PM
celicaST QUOTE(nate95 @ Aug 5, 2006 - 11:35 A... Aug 5, 2006 - 3:50 PM
Fastbird QUOTE(celicaST @ Aug 5, 2006 - 4:50 ... Aug 11, 2006 - 7:26 PM Bitter most aftermarket underdrive crank pulleys...
1. do... Aug 7, 2006 - 12:13 AM Kwanza26 QUOTE(Bitter @ Aug 7, 2006 - 5:13 AM... Aug 7, 2006 - 12:38 AM Bitter QUOTE(Kwanza26 @ Aug 7, 2006 - 12:38... Aug 7, 2006 - 2:30 PM pure_dx in some cars, it works better, and in some it wont... Aug 7, 2006 - 11:19 AM m0dd3d1 QUOTE(pure_dx @ Aug 7, 2006 - 11:19 ... Aug 7, 2006 - 11:27 AM K-ESD Thanks Kwanza26 for your knowlege and solid answer... Aug 10, 2006 - 7:36 PM Bigmeanbulldog55 Kwanza always bashes on the 5sfe motor, especially... Aug 10, 2006 - 8:28 PM puretone underdrive pulleys, not balanced, is all i gotta s... Aug 10, 2006 - 10:55 PM Bigmeanbulldog55 QUOTE(puretone @ Aug 10, 2006 - 11:5... Aug 11, 2006 - 12:54 AM Bitter pulleys need to be balanced as well, not to mentio... Aug 11, 2006 - 1:13 AM Kwanza26 QUOTE(Bitter @ Aug 11, 2006 - 6:13 A... Aug 11, 2006 - 3:19 AM puretone QUOTE(Bitter @ Aug 11, 2006 - 1:13 A... Aug 11, 2006 - 6:07 PM ExSane I've also learned some new stuff. Thanks Kwanz... Aug 11, 2006 - 4:01 AM pandakid where can you get pulleys? Aug 13, 2006 - 4:23 AM DeW_H0e_GT QUOTE(pandakid @ Aug 13, 2006 - 4:23... Aug 14, 2006 - 12:33 AM AllTrac96 kwanza i don't see you come around very often ... Aug 13, 2006 - 11:51 AM |
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