truck has brand new rock ford race craft rebuild (l35 heds mild cam ) truck gets extreamly hoty under hood but temp gage says about 130 ...any ways runs good then ill feel a bog then check engine light then no performance like as fast as a normal 4.3 but after resart its good 4 about 30 mins. then light and slow hot motor again ... extreemly bad gas milage to and wen it hapens truck jumps like a trans problem but i no that trany is still strong?