1990 to a 1992

cide · 05-16-2008, 07:42 PM

hey guys ihave a 92 power ram 4x4 with a 318 and i'am thinking about buying a another motor out of a 90 model 4x4 truck. is there a differnts in these two motors port injection wise or any other.

78D200 · 05-17-2008, 03:10 AM

the 92 that you have is a magnum and the 90 is a pre-magnum motor. the 92 should have MPFI and the 90 should be a TBI. the intake and head design on them is different so you might not be able to swap things over. plus the exhaust manifolds are different. the 92 magnum motor is a more reliable motor IMO because of the MPFI.

don't get me wrong, the pre-magnum motors kick butt, but i'd rather a magnum.

05-16-2008, 07:42 PM	#1 (permalink)
cide Junior Member Join Date: May 2008 Posts: 5	1990 to a 1992 hey guys ihave a 92 power ram 4x4 with a 318 and i'am thinking about buying a another motor out of a 90 model 4x4 truck. is there a differnts in these two motors port injection wise or any other.

05-17-2008, 03:10 AM	#2 (permalink)
78D200 Ph.D in wheelinology Join Date: Apr 2008 Location: Manchester, NH Posts: 461	the 92 that you have is a magnum and the 90 is a pre-magnum motor. the 92 should have MPFI and the 90 should be a TBI. the intake and head design on them is different so you might not be able to swap things over. plus the exhaust manifolds are different. the 92 magnum motor is a more reliable motor IMO because of the MPFI. don't get me wrong, the pre-magnum motors kick butt, but i'd rather a magnum. __________________ Tim and Heather 1974 J10 - getting built up some more. built 360, built TH400, D300, D60(detroit)/14B(spool), SOA, inboard rear 64" springs, 38.5 thornbirds jeep pics - http://s149.photobucket.com/albums/s63/jeeping1974/J10/

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