Many people swap a small block Ford engine into the Ranger. There are headers and mount kits available. The 302/5.0L is recommended. Check out this link for info: http://www.therangerstation.com/tech_library/V8Conversions.html.
Dave
On the engine.
I believe the 2.9 liter V6 engine in a 1988 Ford Ranger is rated at : ( 140 horsepower )
The oil pan is bolted to the bottom of the engine
5 quarts
Yes , there was a 2.9 litre V6 engine available in a 1988 Ford Ranger , as well as the 2.0 and 2.3 litre four cylinder engines
1-3-4-2
Either change fuel filter or fuel pump...
Your engine may be running lean, or have a vacum leak
You can replace the speedometer cable, on your 1988 Ford Ranger, by loosening the cable nut on each end of the cable. The cable will come off and can then be replaced.
According to one of Fords websites : For a 1988 Ford Ranger : ( the Motorcraft FL-1-A engine oil filter is used for the 2.0 , 2.3 , and 2.9 engines )
Take it to jasper they rebuild any motor.
Check the engine RPM. If the engine is running too fast when you put it into drive, it will cause the vehicle to jump.