I am runing m20 bmw 2.8 litter with 324/332 degree camshaft. gearing 4,27.1 tire diameter 235/40/17 weight of the car 1020kg and the compression ratio 12.5 and the mechanical distrebuter 006 .and the exaust is under the door i dont know which sparkplugs i should use i was runing bosch w8lcr +4 head .
i should go for ( cold range or hot ). ?
im spining it now at 8200 im trying to do 8800rpm

and this is a photo for my car

thank you in advance
Nasser


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