ive got myself a 2002 vx motor im going to drop into a 4runner , is there anything on the motor i should change while it is out of the car, i am going to do the rear main seal as i heard they leak a bit also the welch / welsh plugs , is there anything else i should be look at doing, also can you run the supercharged heads on a standard ecotec engine, not so much for preformance, just wondering if its possible or would other things have to be changed thanks
The supercharged heads are identical to the N/A heads except fro the pre existing injector ports. So yes they can be used.
Replace: Gaskets (head, water pump, rocker covers, sump etc) Spark Plugs and leads Oil/air/fuel filters Check the water pump too, they are prone to failing
If its a V8 and u want it to be reliable for a while, id be stripping it right down. VT V8's are well known for rear oil seals and piston slack.