Underdrive Crank Pulley/HP Gain?

[FRANK]

Has anyone installed the underdrive crank pulley that Partsrack sells? Anyone get a before/after dyno result? I am sure it's no more than 10 more hp at best though? What's the story...

 

[Marv S]

Jerry Scott put on a pulley reduction and did some dyno tests. Another consideration on using the pulley is for auto-x or racing where they will decrease wear on the p/s pump. On the same line, also use cold weather PS fluid as it is more
viscous and doesn't lead to cavitation which leads to boiling.

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<FONT COLOR="#ff0000" SIZE="1" FACE="Verdana, Arial">This message has been edited by Marv S on December 05, 2000 at 15:41</font>