sbf speedtech plate it blew off the strap on 1 and welded 5 and 6 plugs 150 shot of nitrous
Track heats and a 23 plug? Are you sure? A aluminum track heat would use something more like a 3923. At any rate, both are projected tip plugs and shouldn't be used with nitrous. Also, 31* is too much timing (to start with) for a 150 shot. On a SBF, I normally start around 25* on a 150 and work from there.