when do you need belt driven cam?

[ailijic]

when is it prudent to get a belt driven cam?
what are the benifts over the other varients?

aslo what about the single gear drive, double gear drive, double roller chain, or single roller chain.

from what I have read normal HP levels use single chain.
Higher HP use double roller.

double gear drive is prone to cam walk.
single gear transfers too much vibration.

[gtrclive]

The main advantage of a belt driven cam , is that you can alter the cam timing on the dyno or when ever you want realy... But mainly when trying to setup the power runs on the dyno.

To change it normaly means you have to drop the sump and the timing cover off.....

It also reduces a small amount on spark chatter on the dissy ( i.e. due to the smoother operation of the cam ), but this can also be eliminated by have a crack trigger system....

But it does look good...

[jamieheasman]

It's also lighter and therefore the power loses are slightly lower. They are more prone to breakage however, and need replacing far more frequently.

The best option is gear-driven but I've never seen any on a Chevvy.

[steve_D]

They do use gear drive on the Chevy but are said to be very noisy.

Steve

[Roy. N]

As Steve says, gear drives can be noisy but it I am led to believe it depends which manufacturer you choose. I am using the Edelbrock Accudrive gear drive on my 350 Chevy and can hardly hear it. Any noise is usually lost in the cacophony of sound once the loud pedal is pressed anyway!

Keep between the green bits, Roy