Visit The Dirt Forum for More Information

Author Topic:   please help
posted January 31, 2004 02:30 AM
Hello All.
I'm trying to build my own 358 small block chevy motor (9 to 1, for dirt track racing). My question is, do i need a altenator? the only thing i really have to hook up is the powering steering pump and thats about it for my belts? most pictures i see, don't have this, but i wanted to see if i could get some insight here on the dirt forum.
Thank you in advance for your help!

posted January 31, 2004 02:38 AM
Depends on who you ask.LOL. Ive never ran an altenator before and have not had any problems.


posted January 31, 2004 08:24 AM
I ran one on my 'factory stock' car for years - put a reduction pulley on it and it only costs 1-2 hp up top, the thing that I liked was never having to worry about charging the battery. Pulley alignment is key to prevent thrown belts though (we mixed and matched parts and they were slightly mis-aligned initially).

On my modified I don't run one but am thinking of going to an electric fan and alternator setup - free up 3-4 hp from the engine driven fan, but take away 1-2hp with the alternator - most seem to like that setup that I've talked to, and getting the weight off the water pump seems to help too.

SO - the answer... it depends - you can charge all the time or run an alternator and never charge...

posted January 31, 2004 08:46 AM
i also have never ran one just make sure you have a good battery and keep her charged

posted January 31, 2004 05:37 PM
Here is the way I look at the alternator issue. Yes you can run with out one as alot of people will tell you. But why would you not run one. If you don't have an alternator the only voltage your coil/module can get is what the battery has. Where as when you run an alternator you will have 14+ volts going to the coil/module. I will always run one for that reason.

Jason Boivin

Back to the Archives