4.3 to 6.0 Swap Complete..Slooow

[George C]

so im basically screwed with that motor or is it still better than a 5.3..also 4.8 or 5.3 alumn head should work correct?

its up to you. i think the ironheads are only 295 or 300. a 5.3 is 285 for the older ones and have a better cam in them with decent flowign heads.

for now just get a proper tune