Well I have been setting timing until I am blue in the face and have concluded that the timing cannot be the problem. I have set it everywhere from 34 to 45 total and have come up with the same thing....crap. I noticed that when I was trying to find the total timing the timing light would speed up and right as it got to 2500rpm or so the timing light would slow down to a slow flicker, slower than at idle. I thought the light would only get faster as the revs got higher. Someone told me there is a problem with either my distributor, ignition or both. I have a mallory magnetic breakerless distributor with mechanical advance and a MSD6a ignition. The box is many years old.
Upon dropping this new engine in there was no bogging off idle and it would peel out at ease from any rpm in first gear. With no change the truck stumbles below 1500 rpm, bogs when floored and struggles to rev to 5500 when my combo should be good to 6500. It has lost over 1 second in 1/4 mile times.
What could be the problem? I have replaced plugs, wires, cap and rotor, bushings and springs in the dist., coil. I have replaced all fuel lines, fuel pump and fuel filters. The only thing I havent replaced was the MSD6a ignition which is many years old. Please help. I need to have the problem solved.
Should I just break down and buy an HEI distributor and scrap the MSD6a? Thanks in advance for the help.