Have a friend with this truck. Engine was just rebuilt. Starts and runs fine. Light throttle is good, but anything over 1/4 throttle and it is gutless. Does not miss, hesitate or stutter in any way. No codes. Drives exactly the same with the exhaust cracked open before the cat as it does with no exhaust leaks. Feels like a 2.2/2.5 with the timing belt off a tooth. No power all the way to 5500RPM.
There is the back story. My guess is one of 2 things. Either the distributor timing is off or the cam timing is off. Even though there is no timing adjustment at the distributor like a normal small block, it is possible to be off a tooth when installing, I think?
Also, verified map and maf are working and no vacuum leaks.
Anyone got any ideas or thoughts........other than sell it or buy a Dodge....LOL.
Thanks.