Originally Posted by Evil XE 351
I have a 351 cleveland fully rebuilt 2000 kz ago, running twin gas research and just recently in the heat under medium load my engine is pinging, i have my timing set high but dont want to change it due to performance loss. On the secondary throttle bodie i have taken out the jets so once the secondary opens its plenty rich enough and doesnt ping. Is there anyway i can richin up the fuel on the first throttle bodie? Any help would be muchly appreciated!
Best thing to do is to have it properly tuned by a gas research tuner on the dyno to get the mixtures right, and to play with the timing. More timing does not always mean more performance, as I found with my engine on the dyno.
If you havn't had your dizzy regraphed for the gas that will be the problem.
Also out hear in VIC the best gas is from BP if you can't get 100% propane mix, so perhaps try their gas first.