i live in hot ass arizona, my car has alot of miles on it, hott hott summer is comin is it ok to go up in wieght from 10-30w to 10-40 weight? i use valvoline high milage oil???
i have a 90-91 b18a i am puttin in 92-93 cam shafts, aftermarket cam gears and a fpr. what else should i change or have done? change the gaskets and adjust timing??? anything else?