89muskratGT

my 5.0 is has proformer rpm heads, E cam, gt-40 intake, 70mm throttle body, 75mm mass air sensor for 24lbs injectors, 24lbs injectors,headers and full exaust. The timing is set to 10 advanced right now would it be better to go to 15 advanced?

thanks

p.s. what should my spark plug gap be

NegadivOne

yeah you could go to 15 degrees but you would have to run high octane gas.

88PatrolCar

Wouldnt 15 degrees advanced cause pre-ignition? Anyway put your plugs at .045 thousanths.

luckythirteen13

try 13-14* and run on 91+ octane

mdvaldosta

yea