Have a 87 5.0 Automatic....
It makes a loud rattle noise from engine at approx 5000 rpm in second gear....
It doesnt do it in First gear or third or if it does cant hear it over exhaust...
Is it detonation? Tension/Idler pulley??
Car is set at approx 12 deg and using 89 octane..no real mods...
just 3.55 gears and intake and pulleys and exhaust.....speed density
let me know what ya'll think
It makes a loud rattle noise from engine at approx 5000 rpm in second gear....
It doesnt do it in First gear or third or if it does cant hear it over exhaust...
Is it detonation? Tension/Idler pulley??
Car is set at approx 12 deg and using 89 octane..no real mods...
just 3.55 gears and intake and pulleys and exhaust.....speed density
let me know what ya'll think