[1987notch50]

are power pullies from bbk really worth it will it make a noticable hp gain also i have an oe water pump and an oe alternator will it run hot and drain my battery and if so will getting a 100amp alternator fix the charging problem and a higher flowing water pump fix the heat problem.

also with the pullies and a 100amp alternator will i be able to run an electic fan like a mark8 fan or something like that

and finally i have a mechanical oil pressure gauge and when the car is cold i am reading about 55 psi but when it warms up and i am sitting at a stop light it goes down to about 15psi but the motor still idles fine and doesnt shake or nock and when i hit the gas it goes back up to about 40psi is this normal thanks:bigthumbsup

 

[dakine858]

Answers

Your oil pressure reading is normal. I have the BBK pulleys and I think they are worth it. As far as draining the battery and running hot, you have nothing to worry about because they are made to work with the OEM components. You lose no cooling ability or battery life and your alternator is fine.

 

[EagleAutosports]

You shouldn't have a problem with the pulleys, although I'd recommend keeping the stock alternator pulley, that would keep the alternator from slowing down much, you could use the water pump and crank pulleys.
The oil pressure is fine, what it's doing is normal. When the oil is cold, the engine will have more pressure and when the engine warms, the oil thins and as long as the pressure doesn't drop below 8 psi, it's fine, especially since it comes back up when it's revved.