The engine is a '61 Chevy 235.
What is the correct mark on flywheel for timing? I've been using the circle. I 've had the engine running great, then the next time I start it after cooling down it will run like crap. Is this a timing issue? or something else? I've been told I should be using the small mark just before the circle, and another source told me I should be using the triangle.
I've also been told the number one plug wire on the dizzy should be pointed more or less toward the front of the vehicle (3 O'Clock to 2 O'Clock range)right now it's at 12 O'Clock. Hoping you experts can tell me if I, or my information, or both are screwed up. Thanks


'61 Apache 10, '68 C-10, '82 C-30 Dually diesel. Pics at www.picturetrail.com/yachtcare