Issues with 95 f350 460

[bigcountry0307]

Bought the truck and it had a hole in right head just above exhaust port, had f3te swapped with e7t3 got everything put back together and had to pull valve cover and seen rod slipped.

Fixed that and it ran great for a about 300 miles put seafoam in the fuel now it won't run right.

Changed map sensor, fuel pressure regulator, dist cap, rotor, plugs, can seem to figure it out

Any help would be appreciated

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[Jasperrc]

If it started when you put the sea foam in, I would try replacing the fuel filter(s). Maybe crud in the tank got loosened up and is clogging the filters.

[dustybumpers]

Codes?