what would cause my valves to rattle? its a 406 dome motor with brodix track1's 645 solid roller cam that was degreed in. 1.5 harland sharp roller rockers msd distributor msd 6al box msd coil 750 aed double pumper. no matter where i move the distributor the valves rattle. will cheap gas cause this? i havent set the timming with a light yet just by ear to get it going. any help would be appreciated. thanks Avery
right now its just 87 octane. i just got it going and that all they had around here. everybody was running out of gas.
Add a couple bottles of Heet it will raise the octane by 2 to 4 points since it's almost pure alcohol. That will tell you if you have an octane problem.