I am giving my car a tune up and was wondering what kind of plugs to use, I'm probablly going to use ngk v power, anyone here know exactly which ones to use, or other plug suggestions. Also, what should my timing be set at and what's the best way to check and set it??? it's a 350 bored .30 over, 10:1 compression, 2.02 fulie heads, edelbrock carb/intake/cam, basiclly your typical 350 small block with minor performance upgrades.

 

i'm a chevy man so i only use the best ac delco. they are hard to foul even under very rich conditions. unless your cam specs say otherwise timing should be set at 8 degrees before TDC. sick

 

i run r45ts delco gap at .055, have ho ing setup

 

i've tried every spark plug you can think when i was racing dirt tracks and the only plug i had good luck with was autolite.we were running 6800 all night long and autolite's never gave us a problem.autolite makes a racing plug and i believe the # is ar135 for the small block and ar133 for the big block.most place's have to order them but i know advance has them in stock.the electrode has been filed back,some sort of drag racing trick,changes the flame pattern.timing should be set on 8 but you can get away with 10,experiment with it.

 

If the engine and ignition is stock, I would stick with the OEM Delco plugs, but if the engine or the ignition is modified it is probably worth while to experiment. Besides the reach of the plug, which should not be changed, the heat range and gap of the plug are the most important things to consider. Electrode material is more important for longevity than for performance. As a rule of thumb, a modified engine will perform better with colder plugs, as they reduce the tendency for preignition, but that increases the tendency for fouling. A hotter ignition will permit a bigger gap, which may give a power boost, but be careful not to go bigger than the wires can tolerate. You may be able to generate more bottom end power by advancing the initial spark lead, but you must modify the spark curve to keep the total advance the same to prevent pinging and loss of power. Again, depending on the engine mods, the spark advance can be increased or reduced to get the most out of the engine.

 

I will stick w/delco then. I heard that naturally asperated should run at .35 gap???