Jetting and timing question
One more possibility since its an unknown engine. The timing mark is correct? '69 to '70 timing mark switched sides or some other reason its not correct. Might just want to verify that. Bring #1 to TDC and check that the mark lines with zero.
Here's a couple mechanical timing curves based ion th efactory specs.
Notice how different timing is if measured 1000 rpm instead of 600 rpm.
Always measure timing with the vacuum hose plugged. Even if using ported vacuum, it can sometimes pull a little advance so its best just to plug it when measuring. In your case I'd leave it plugged until the base timing and carburation are figured out. Then reconnect it.
One more possibility since its an unknown engine. The timing mark is correct? '69 to '70 timing mark switched sides or some other reason its not correct. Might just want to verify that. Bring #1 to TDC and check that the mark lines with zero.
Here's a couple mechanical timing curves based ion th efactory specs.
Notice how different timing is if measured 1000 rpm instead of 600 rpm.
Always measure timing with the vacuum hose plugged. Even if using ported vacuum, it can sometimes pull a little advance so its best just to plug it when measuring. In your case I'd leave it plugged until the base timing and carburation are figured out. Then reconnect it.