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Ill put in some pics of mine here, original 302 76 2wd truck with a 351w swapped in. All the accessories are the same.Easiest way to determine if 351w is to look at where the head meets the block. There is about an inch of block that sticks up above the timing cover. A 302 head is pretty much flush to the timing cover.
Thermostat housing bolted to the front of the intake manifold
All 289/302/351's have intake bolts 90 degrees to the ground
289/302/351's have evenly spaced exhausts aimed 90 degrees from length of head
5/8" (18mm) spark plugs
The 351W and 302 are very different:
The 351W has a taller deck height than the 302. (a 302 will have the intake almost flush with the base of the distributor... where it goes into the block..... a 351w will have about 1/2 inch lip there where the intake meets the block.)
Since the deck height is taller the intake manifold is wider on the 351w than on the 302.
The 351W uses a larger main journal than the 302. there are 2 physical ways of telling a 302 vs. a 351w. Also, in between the frost plugs on a 351W there will be what appears to be a triangle or diamond (the way I was told) indented cast into the block...a 302 doesn't have those.
a 351W is wider between the heads compared to a 302 (the intake manifold is wider by about 1-1/2") and 351 pistons have a different pin height. You can use 302 pistons in a 351 if you stroke it to a 393
quick ID tip: The lower thermostat housing bolt on the 302 will be below the top of the water pump and you won't be able to put a socket on it. On the 351W you can remove the bolt with a socket.
Looks like an SBF with a mid 80s to early 90s Stang serp drive with that era PS pump and alt. The A/C was usually there instead(of the alt) and since that's omitted there was no need for the idler pulley/tensioner that completed the system) on the pass side) unless it was a CA. truck, which would have had the smog pump as well. One thing is that on the alt. with serps there, is usually a support rod from the intake that attaches to the alt to aid in stiffening it up a bit. I have used the same type, but with the all cast brackets on a couple of Early Broncos over the years. Only thing I can see and it may have been taken care of is that . Hopefully the PO just got the pulleys and bracketry and installed on a reg 302. As if not, those were reverse rotating H2O pumps in those years. Pic below shows reverse rotating H2O pulley driven off the opposite side of the crank pulley than the way that DJs is. IWe have seen motor overheat eventually as the when you a rev. rotating pump on a reg. rotating motor. Again only a problem if the pump was swap into older motor or if newer motor swapped in and you eliminate the pass side acceys. as the belt pattern will not be the same. Take it witha grain of salt as he did not post a pic that shows the crank belt rout e, so this could be moot, if the belt goes under from the drivers side, which would reverse the rout again. This all make sense????????We use to get the fixit pumps for this dilemma from BC Bronco back in the day to do Stang swaps into our Early Broncos, so that was not an issues.
I recently purchased a 1976 F-100 Ranger XLT with little information. And I'm a newb so that doesn't help. The 302 in it looks much different than any diagrams I've seen for the '76 and also comparison 302 photos. What's up with that?
VIN shows it was built with a 302 V8 with manual transmission. Current transmission is a C6 automatic so I know that was changed out, but I believe the engine is original 302, but no tags/identification on it.
I'll preface these questions with this: this truck runs great. Zero issues.
1. What's up with alternator placement opposite from battery? I've seen A/C compressors mounted here, not alternator.
2. P/S is located directly beneath alternator also on same belt. Is one belt supposed to drive all 4: crankshaft, water pump, alternator, and P/S? Very newb question - I know.
3. PCV valve is back right valve cover. I've seen most others showing front left??
4. Anyone else notice odd things about this engine?
It's a 302, too narrow to be a 351w. I'm betting it's from a early to mid 80's Crown Vic or Marquis, Continental, something like that. I've seen these drivers side alternator mounts before on those cars. Water pump pulley is grooved so it's not reverse rotation; at least the pulley isn't.
It's a 302, too narrow to be a 351w. I'm betting it's from a early to mid 80's Crown Vic or Marquis, Continental, something like that. I've seen these drivers side alternator mounts before on those cars. Water pump pulley is grooved so it's not reverse rotation; at least the pulley isn't.
That's it exactly, had 2 Town cars and a Grand Marquis. They used that belt drive from 79 up to the Mod motor. Standard rotation WP. Believe SEFI motors all had roller cams starting in 86. Ford Flywheels and Flexplates Some things about flexplate/fly wheel weights. If your changing stuff around.
Sorry I posted that before I saw the other responses. So i think we're in agreement here - 80's 302. Top of the block also has two other numbers: 15426378 in front by distributor and in back on top is D8AE-BA.
01-19-2018, 04:15 PM
