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Hey y'all! I have a 302 which ended up needing a rebuild, and according to the previous owner, it should be a 302 HO out of a P.E. Mustang. I'm trying to figure out what kind of cam I have to see if it's worth keeping or getting a new one. Pictures attached of the casting numbers I can find. Thank you in advance
Should have specified that I'm trying to figure out if it is actually a HO or not, on top of actually trying to get spec numbers for this cam.
Edit: I was thinking it an F303, but the lift is only 0.23"
Last edited by lackluster_bullnose; May 6, 2026 at 04:25 PM.
Reason: I put the wrong number
Were any HO engines made with a flat tappet cam? If the front 2 cam lobes are close to in line with one another it uses the "351" firing order if they're nearly opposite then it uses the std firing order. The HO used the 351 order.
Thats a flat tappet cam not a roller right? The HO has used a roller since 1985. 82-84 used the marine cam in the engines. ALso as was said the HO used the 351 firing order. Either way if it is a HO cam, its looking pretty worn out and if your rebuilding just replace it. Tons of good cam grinds out there. Back story.. Back in the late 80s I had a 84 f250, Non HO 5.8 init with a 2bbl. I wanted a little more power, and ended up finding a brand new1984 5.0HO in a junkyard with only a few thousand miles on it. Block was no good, cracked apart from a wreck, so the yard sold me just the cam. That and a 500cfm holly 2bbl really woke that engine up a lot!!
The numbers on the casting usually identify the core and not the actual cam grind. In other words, the same core can be used to produce many totally different grinds for different applications. A used core with worn lobes but with a good gear and journals in good condition can be reground to make a very nice performance camshaft. About the biggest limitation is that depending on the existing and the new grind the amount that the lobe separation can be changed is somewhat limited. A couple of degrees on each lobe is usually possible so a cam that's out on 112 could be brought in to a 108 or vice versa.
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