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ok I was givin a choice when purchasing my harmonic balancer, the options were.. (all apporved spec)
standard looking balancer (heavy item)... and the other option was an aluminum pulley with a steel hub....
which do u guys think I should go with... or do u really think that will matter..
this is for my twin turbo 350 project
thx again guys
Dave
If this is a street-driven motor, use an OEM-type damper with an elastic material between the hub and the outer ring. Here's a good source...
http://www.damperdoctor.com/
If you will be drag racing and going quicker than 10.99 seconds, you'll need a damper that's approved to meet SFI spec 18.1, such as a Fluidamper, Rattler, etc.
Running the motor without a damper of some sort will allow the crank to destroy itself due to uncancelled harmonics.
The exception is a blower motor using a drive belt off the crank, which tends to cancel harmonics (ala Top Fuel, Funny Car, etc.).
it will be streetable but mainly a weekend warrior trck car.. not faster then prolly 11's
they are both SFI spec... the cheeper one was more like a stock looking weighing balancer.. should I just go that way
Dave
The less expensive, OEM-type damper should work fine. Note that there are quite a few different part numbers used on the small block Chevy based on stroke and timing tab location. Pay attention!!
http://www.damperdoctor.com/Merchant...egory_Code=CHE
yeah I am buying them froma place who stocks all this stuff and he knows EXACTLY what I am doing to the motor and this is where I got all my other stuff
cost me 115.00 for the balancer it is a professional performance harmonic balancer not sure if that is a good brand etc but thats is what I plan to buy
Dave