riplt1

i have a custom ground cam in a sbc. i'm trying to figure out what size push rods i need with a push rod length checker. i have my #1 piston at top dead center as best as i can get by eye-balling it.

i just wanted to know if there was any fool-proof way you can check it without the fancy measuring tools?

supermouse4

Stick a screw driver into the spark plug hole, if the piston is close to TDC, the screwdriver should make a loud sound.

You could use the dampener and timing mark to find TDC for cylinder #1.

big hammer

as long as the lifter is as far down as it will go then thats all that really matters

riplt1

i've heard of that method. but my motor is on an engine stand out of the car. its never been fired up. i haven't got the distributer or intake manifold on yet.

riplt1

thanks man. so its really not a big deal as long as the lifter is at the base of the cam lobe? thats easy to find. i'll give that a shot.