416 sparks key

[danzigg]

I just built a 416 from stock do i need the take out the sparks key i had in there on the stock motor or should i leave it alone?
thanks

[coreo5]

i believe the key will have no ill effects on it. i dont see how it could. but i have been wrong before

[bigbad400]

if you have a hi compression piston in there you prolly should remove it. sparks recomends you dont use the key on 11:1 or higher compression.

[danzigg]

yes i put a 11:1 high comp weisco with a xr400 head gasket.