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This is going to sound really silly to a lot of the more veteran mechanics on here but what engine do I have. I just bought a 1977 F-100 2wd flareside and I'm restoring it. The guy I bought it from said it was a 302. I needed to repair the fuel pump because it had been sitting with old gas in it for a couple of years. The 302 fuel pump did not fit but a fuel pump for a 351 did. Alright so i now know it is a 351 but I know there are a lot of different types of 351's. The first 5 of the vin is F10HR. I heard the R means something but I don't have a clue. Any help?
Engine Identification
The 351W and 351C did not come stock in 73-9 trucks. Some of them have been "transplanted" tho.
Engine Identification:
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351C/M/400 335 series: 8 bolts in rectangular valve covers. Timing chain housing is part of block. Thermostat housing on block. Exhaust bolt holes diagonal.
351M/400 335 series: intake is 12.7" wide the 351C is narrow. The 351M and 400 are identical externally, only internal parts examination can tell them apart.
351W/302/5.0L 6 bolts on trapezoidal valve covers. Thermostat housing on intake. Exhaust bolt holes horizontal.
429/460 385 series: 7 bolts in rectangular valve cover
352/360/390/427/428 FE series: Intake goes under valve covers.
Ever get into here much? You should spend some time in here it has a ton of knowledge;
so it looks like a 351. It has 8 bolts on the valve cover so by your handy chart there it is a 351C or 351M. I haven't really paid to much attention to the air intake but I'm going to go take a look. Thanks again for the quick reply.