Well, i have been working on my 69 c10 for roughly a month or so now when i bought my truck the motor had a slight knock to it, nothing major well when i decided to do the restoration i decided to replace the motor with a fresh 350. We'll after running into every homemade fix you could think of on this truck (horrible hillbilly wiring, ducttape then bondo over rust holes. years of neglect had sure had it's way on this thing.) i get the new fresh 350 in relatively easy with very few problems with the fresh engine i upgraded to an hei style distributor....for test purposes i wired it direct to the battery just to test fire the motor and make sure everything was in working order. of course i made all my inital checks, fluids, hoses, clamps, everything looked good, i get inside the truck hit the starter...fire it up, starts to die so i give it a little gas....return spring on the new carb sticks.....motor sores up in rpms pegs my 8k tach out.... i instantly removed the key from the ignition only to realize that wasnt going to do me a bit of good..... i had to hop out of the truck and run to yank the wire from the battery to coil. moral of the story.... dont ever take short cuts no matter how excited you are to hear your new toy run!