Originally Posted by elcaminodragster
the balancer cant slip it has a key way on it. and it will take the advance but if i rev it up to say around 3000 it pops through the carb. the book says it should be timed at 0* TDC (with factory parts). i put in a 252H from comp cams. and they said to try advancing 2* at a time. 3* runs the best but its hurting the temps.
Usually, balancers have an enertia ring held on by a rubber elastomer, and this is the part that can fail and allow the outer ring to move, making the timing mark usless. Some motors only come with a single piece Hub. Which do you have?
Besides the cam, what other parts did you add or change? (pistons, exhaust, head work)
What do your spark plugs look like? Should have a light tan coating on the porcelin insulator. White is too lean, darker than tan is too rich, metal flakes stuck to the porcelin mean detonation
Did you replace the valve springs?