I ordered TMS iron 347 forged long block. I want to see which spark plugs I should look for.

Also they say I can't run synthetic oil. Have to be 20w-50 valvoline VR1. Want see guys who have experince this performance engine.

 

Spark plugs depend on what you plan to do with the motor. NA, nitrous, boost, how much if any?

 

I have spark plugs for boost. I'm saving it. But I need spark plug
For n/a they are 420 hp on all motor. Because I won't able put turbo in till next year.

 

I wonder why not syntetic???

 

Use ngk tr55 youll be fine

 

What this guy ^^^^ said.

 

IIRC the VR1 racing oil he is supposed to run has a higher zinc content

 

you want higher zinc content for fresh built engine for break in. dont see why you cant run syntetic oil after few 100 miles. tr55 be or tr6's

 

irduim or copper, what gap should set

 

I dont know why Thompson motorsports say dont run syntheic for this forged 347?