Will a 5.7 vortec and transmission fit into a 98 GMC Jimmy 4x4?
yes with a lot of work.i have done it myself.contact advanced adapters
Will the engine and transmission from a 1994 GMC Jimmy S10 SLE 4POINT3 liter vortec motor fit into a 1999 GMC Jimmy SLT?
the simple answer is YES. though, a 94 would be either a t.b.i. system or early vortec. if it is a vortec, the swap shouldn't require a p.c.m. reflash- however if your 94 is a t.b.i. you will need to change the intake and fuel delivery systems to handle the 60 p.s.i. operating pressure for the vortec engine.