engine ID...need some help
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engine ID...need some help
I was informed by the PO of the 1988 f250 that I just picked up that the motor was swapped for a 302.
Now, as that seems odd, I decided to check out some things for myself. It seems that it has 351 manifolds on it. The lower bolt on the thermostat housing is well clear of the water pump. There's a rib if I stick my hand directly behind the distributor. I have read that these are sure signs of the 351...but the only sites I have found are for classic mustangs ect.
Am I correct in thinking that this is a 351 and that the PO had no idea what he was talking about? Is there any sure fire easy way for me to check?
Thanks in advance, I'm new to older fords...
Now, as that seems odd, I decided to check out some things for myself. It seems that it has 351 manifolds on it. The lower bolt on the thermostat housing is well clear of the water pump. There's a rib if I stick my hand directly behind the distributor. I have read that these are sure signs of the 351...but the only sites I have found are for classic mustangs ect.
Am I correct in thinking that this is a 351 and that the PO had no idea what he was talking about? Is there any sure fire easy way for me to check?
Thanks in advance, I'm new to older fords...
Postmaster
Joined: May 2008
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From: La Vergne, TN
look at the upper intake. it will have lil "runners. if they are squarish its a 302. if they are rounded its a 351W.
this is the easiest way to tell. or you can take a tape measure and measure the width of the lower intake. if its 9.5 inches its a 351W. if its 8.2" its a 302.
this is the easiest way to tell. or you can take a tape measure and measure the width of the lower intake. if its 9.5 inches its a 351W. if its 8.2" its a 302.
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The runners on the upper intake are round/ovalish. Guess it's got a 351w then?
It didn't seem like a dog at all when I test drove it. Should have guessed that he didn't know what he was talking about.
It didn't seem like a dog at all when I test drove it. Should have guessed that he didn't know what he was talking about.
Lead Driver
Joined: Aug 2006
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From: Sand Lake, MI
Doesn't it say 5.0 or 5.8 right on the top of its upper intake?
If not isn't the 5.0 the only one with the removable plate that states its size? or does that only pertain to the car intakes?
If not isn't the 5.0 the only one with the removable plate that states its size? or does that only pertain to the car intakes?
Lead Driver
Joined: Aug 2006
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From: Sand Lake, MI
Huh, mine says 5.8 on it, buddies bronco and Lincoln both say 5.0 IIRC, just figured they all did.
I remember the plate that said 5.0 on his Lincoln was removable but do not recall if the bronco is, the 5.8 its formed right in with the casting of the intake itself.
I remember the plate that said 5.0 on his Lincoln was removable but do not recall if the bronco is, the 5.8 its formed right in with the casting of the intake itself.
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Just found another clue, something about 302 EGR coming from lower intake and 351 coming from passenger exhaust manifold. Another check in the 351 box 
I'm considering taking the upper intake off and measuring if the weather is decent tomorrow. I'm missing the passenger side exhaust manifold now anyways, so it's not like I'm going to be driving it anytime in the next few days.
I'm considering taking the upper intake off and measuring if the weather is decent tomorrow. I'm missing the passenger side exhaust manifold now anyways, so it's not like I'm going to be driving it anytime in the next few days.
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Postmaster
Joined: May 2008
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From: La Vergne, TN
the older intakes didnt have the engine sizes labelled on them. thats why i gave the tips to figure out how to identify it.
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Postmaster
Joined: May 2008
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From: La Vergne, TN
Just found another clue, something about 302 EGR coming from lower intake and 351 coming from passenger exhaust manifold. Another check in the 351 box
I'm considering taking the upper intake off and measuring if the weather is decent tomorrow. I'm missing the passenger side exhaust manifold now anyways, so it's not like I'm going to be driving it anytime in the next few days.
I'm considering taking the upper intake off and measuring if the weather is decent tomorrow. I'm missing the passenger side exhaust manifold now anyways, so it's not like I'm going to be driving it anytime in the next few days.
here they are on the 351W im building. ive got it down to the bare block waiting to take it to the machine shop....
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I definitely have some leaks at the valve covers. Maybe I'll pull it all apart and get those changed out while I'm in there.
Gotta get a new exhaust manifold ordered up so I can drive this thing.
Gotta get a new exhaust manifold ordered up so I can drive this thing.
Postmaster
Joined: May 2008
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From: La Vergne, TN
yeah just get some rubber gaskets not the cork ones. the rubber ones are better.
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I pulled the upper intake off and found a casting number on the lower. Looks like it's a 351w.
This helps out a lot. When I go to sell it down the road, it'll be easier to positively say that it's a 351 in this monster (Ex cab, long bed, 4wd)
This helps out a lot. When I go to sell it down the road, it'll be easier to positively say that it's a 351 in this monster (Ex cab, long bed, 4wd)
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