There is no doubt that alot of R&D has been done to this engine. However most builds on them, have not been stock. These motors love cams, and head work. (l;ike every other toyota). For some reason toyotas of the 80's always had peuny camshafts. My father got me into building these for mud trucks back in the day. We were able to squeeze over 300 hp NA out of one of these and make it last (Far from IT build).


I know where you can find the answer. They will probalby try to sell you something however. They do make good parts.. just fairly expensive.

http://www.lcengineering.com/