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S/ST 3040 · 04-20-2017, 07:21 PM

Are there any internal differences in these castings? Outwardly, they appear the same.

4448308 (88-91 OEM 360)
4772576 (Mopar Performance)

I have a single MP casting, that is completely butchered that I will continue to grind away at, looking
for thin spots. I am just wondering if I can expect the same internal structure from the 308.

04-20-2017, 07:21 PM	#1
S/ST 3040 Junior Member Join Date: Jan 2015 Posts: 41 Likes: 4 Liked 1 Time in 1 Post	SB Mopar Cylinder Head Are there any internal differences in these castings? Outwardly, they appear the same. 4448308 (88-91 OEM 360) 4772576 (Mopar Performance) I have a single MP casting, that is completely butchered that I will continue to grind away at, looking for thin spots. I am just wondering if I can expect the same internal structure from the 308.