Technical spark plugs

i need help i got a 355 with camel hump heads what spark plug is the 1 to ues ?

 

Depends on the application. AC 43 or AC 44 is a good place to start.

 

yeah, make sure they are gasket plugs, not taper seat.

 

so r43ts can i use them ?

 

No. Just plain 'ok r43. TS stands for taper seat, you need gasketed.

 

thank you

 

If you've got a choice, you might want to start out with a cooler heat range. Your final choice is going to depend on the rest of your build, your fuel system, tune-up and how the vehicle is driven.

This will give you an idea of what you're looking for.

 

It’s think the 44s are out of production, unless you look for NOS , I have R45S in my 327 with camel humps . Either way the R43S or R45S is right where you start .

 

I use # 303 autolite..
Pretty cold plug.
They are resistor plugs.
Readily available at oreilleys, autozone, napa.
They are catalog plugs for international V/8 trucks..
Dave

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