Plug size?
I need to pull out the plug next to my distributor to hook up my oil pressure gauge. It's a square drive. But 1/4 is too small and 3/8 is too big. Which size is the plug? The plug was out when the engine was rebuilt so I know it will come out.
__________________
1967 GTO, 432 (428+.030), 4-bolt mains, factory Nodular crank, scat rods, icon dished pistons, Lunati HR 243/251@.050, .618/.622 lift, Edelbrock 72cc round port heads, 10.5:1, offy 2-4 intake, Edelbrock 650cfm carbs, Super T10 trans (2.64 first), BOP 10 bolt w/ Eaton posi and 3.36 gears
|