Spark plugs for headers

[shybx1969]

Guys whats the best spark plug for bracket racing SBC w/headers...Most people tell me accel are junk...whadda u think.. :roll:

[Swiley383]

Can't speak for their plugs but their coils suck they do not last I have had several. I try to run AC in GM street motors. I have NGK in my race motor I may try AC next time. Need more details on the motor if its a dome piston motor you will need non project tip plugs if you have aftermarket heads they may have came with a recommendation to get you in the ball park as far as design and heat range goes. The NGKs in my 383 sbc are about 7 years old. I know I need to change them.

[shybx1969]

Engine for now is 305 ho, flat top pistons cam 1500-4000 rpm, holley 650 vac sec...

[DRTRCR22]

Autolite AR Racing plugs AR33 thru AR35 depending on heat range needs.

they are shorties to clear headers on both straight plug or angled plug heads, non-projected tip, and really good quality. I have had only one plug failure in over five years, and change them out once a year at beginning of season, just because... and race hard at dirt circle track every weekend thru the summer. You can probably get them from a local parts store, but I order mine through online speed parts outlets. Jim

[shybx1969]

thanx for info.. :D