Can I rebuild an 85 block for an 86?

[Green92LX]

If I were you, I would look for a 87-92 motor. This way, you will have a better basis for upgrades. 87-92's had notched, forged pistons and better flowing stock heads. This way, you can easily throw in a cam, or more importantly run some form of forced induction easier. It's a smart move and will save you money in the long run.

------------------
1992 5.0 LX, Edelbrock 6037 Heads, Cobra Intake,E-303, 1.6 Rollers,65MM Holley TB, 75 MM Pro M Mass Air, 190 LPH FP w/ 24 lb injectors,BBK equal length shorties,offroad h-pipe,Mac Flowpath Cat-Back, Pro 5.0, 3.73's,Motorsport "C" springs,welded subframe connectors

Daily driver: 89 notch with 200K plus, BBK shorties,offroad,2-chamber flowmasters with dumps, cut and welded stock shifter...and it runs like a champ.