pro-boss in a mustang?

I blew a piston in my 93 lightning a few years ago with a little much boost. If I remember correctly we were able to drop in a 302 roller lifter setup with no mods. I would have to go back and check my records records but that was my memory of the deal. the machine shop i use gave me the lifters and we ordered a roller compu cam for it. Let me know if your out this way, be happy to met up.

I am at the west end of the toll road, probably 1.5 hours to port clinton, Dad used to keep his boat at lakeshore marina there. Not sure what year chebby changed exhaust ports, vortech heads need a whole different exhaust dont they?

Benj, not sure what im thinking till i get it all splattered on the floor but the plan would be either use the 79 sn motor and just swap the GT40 top end on, easy deal or use the 79 rotating assembly int he gt40 block if there was a compelling reason to do so. sounds like if the reverse rotation marine cam is only flat tappet, there would be no gain in going to roller.

in that case putting the gt heads on the 79 would be the best way to do the swap. If the motor does come with everything it would be a decent swap.

My head is starting to spin now...

I have read on the mustang sites that the GTp has a different spark plug angle and requires a different header on cars. not sure if that means the port shape is different as well for exhaust manifolds or if it was a header interference problem. I know the 3 bar heads will work and for $150 they are well worth picking up even if the motor turns out to be useless.

I have my own valve machine in the shop, its only the guides I send out if they are worn. My chebby manifolds are logs, i have not seen the ford ones recently, I will have to do a little reading here as you suggest.

mine are very straight out like the edl, omc manifolds.

Are the pcm boat motors painted black? I got the 351s back to the shop and started looking them over and they are painted black with brass freeze plugs. my truck motor was not painted at all. make me wonder if these are boat motors with the late blocks and flat tappets in them.

They are 94 castings (F4) so that is probably where they came from, the one spare was silver so i bet they all came out of a boat shop of some sort.

correct, both are flat tappet.