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How to tell if I have a 351W or 351W HO?

  #1  
Old 07-08-2009, 02:01 PM
gotjeepzj
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How to tell if I have a 351W or 351W HO?

I know this has been touched on, but the search didn't help. It has a 4bbl carb and intake although I was informed by the PO that he replaced the holley with the edelbrock that is currently on.

A quick search on google pulled up the same question in a mustang forum. The response was that the engine code is in the VIN number. If it is in the VIN, how do I tell, and is the VIN stamped on the engine somewhere just incase the engine has been replaced?

TIA
 
  #2  
Old 07-08-2009, 02:35 PM
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No vin on the engine. Just a production number
 
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Old 07-08-2009, 03:25 PM
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are there any external differences? I know the carb and intake, but you can pick those items up from a bone yard. Is the engine code in the VIN?
 
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Old 07-08-2009, 04:49 PM
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As far as i know they is no such thing as aHO 351 in a truck
 
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Old 07-08-2009, 04:54 PM
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I should've mentioned its a 1984, and from what I've read it was an option. Also should note the intake is ford and the carb is edelbrock.
 
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Old 07-08-2009, 05:01 PM
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I thought the only difference between a 351 and a 351HO was the 4bbl carb/intake.
 
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Old 07-08-2009, 05:02 PM
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There was a 351w HO available starting in 1984, but unfortunately I don't know how to tell the difference. From what I understand it had a higher CR and a holley 4-barrel. If it's a Ford 4V intake then I would guess you probably have a HO motor.
 
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Old 07-08-2009, 10:36 PM
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I would check the vin and the door tag, and make sure it's even supposed to have a 351w in it. You never know, the engine may have been swapped out from a six or a 302.

The numbers below represent the digit in the 8 digit vin.
1.Vehicle Manufacturer

1FM — Ford Motor Company, USA, multi-purpose vehicle
1FT — Ford Motor Company, USA, truck, completed vehicle
1FD — Ford Motor Company, USA, incomplete vehicle
1FC — Ford Motor Company, USA, basic (stripped) chassis
1FB — Ford Motor Company, USA, bus
1FF — Ford Motor Company, USA, motor vehicle equipment without engine/powertrain (Glider)
1MH — Mercury, USA, incomplete vehicle
2FM — Ford Motor Company, Canada, multi-purpose vehicle
2FT — Ford Motor Company, Canada, truck, completed vehicle
2FD — Ford Motor Company, Canada, incomplete vehicle
2FC — Ford Motor Company, Canada, basic (stripped) chassis
2FB — Ford Motor Company, Canada, bus
2FF — Ford Motor Company, Canada, motor vehicle equipment without engine/powertrain (Glider)
2MH — Mercury, Canada, incomplete vehicle
3FB — Ford Motor Company, Mexico, bus
3FC — Ford Motor Company, Mexico, basic (stripped) chassis
3FE — Ford Motor Company, Mexico, incomplete vehicle
3FM — Ford Motor Company, Mexico, multi-purpose vehicle
3FT — Ford Motor Company, Mexico, truck, completed vehicle
4M2 — Mercury, USA, multi-purpose vehicle
4M3 — Mercury, USA, incomplete vehicle
4M4 — Mercury, USA, truck, completed vehicle

2. Brake Type and Gross Vehicle Weight Rating (GVWR)

A — 0-3000 Pounds
B — 3,001-4,000 Pounds
C — 4,001-5,000 Pounds
D — 5,001-6,000 Pounds
E — 6,001-7,000 Pounds (may also be "R")
F — 7,001-8,000 Pounds
G — 8,001-8,500 Pounds
H — 8,501-9,000 Pounds
J — 9,001-10,000 Pounds
K — 10,001-14,000 Pounds
L — 14,001-16,000 Pounds
M — 16,001-19,500 Pounds

3. Vehicle Line, Series, Body Type

E11 — Econoline Club Wagon
E31 — Econoline Club Wagon (Heavy Duty)
S31 — Econoline Club Wagon (Super Club Wagon)
E14 — Econoline E-150 (Cargo Van)
E24 — Econoline E-250 (Cargo Van)
E27 — Econoline E-250 (Commercial Cutaway)
E29 — Econoline E-250 (Commercial Basic)
E30 — Econoline E-350 (RV Cutaway)
E34 — Econoline E-350 (Cargo Van)
E37 — Econoline E-350 (Commercial Cutaway)
E39 — Econoline E-350 (Commercial Basic)
S24 — Econoline E-250 (Super Van)
S34 — Econoline E-350 (Super Van)
E40 — E-Super Duty (RV Cutaway)
E47 — E-Super Duty (Commercial Cutaway)
F07 — F-150 Flareside, 4x2
X07 — F-150 (SuperCab) Flareside, 4x2
F08 — F-150 Flareside, 4x4
X08 — F-150 (SuperCab) Flareside, 4x4
F17 — F-150 Styleside, 4x2
X17 — F-150 (SuperCab) Styleside, 4x2
F18 — F-150 Styleside, 4x4
X18 — F-150 (SuperCab) Styleside, 4x4
F27 — F-250 Styleside, 4x2
X27 — F-250 (SuperCab) Styleside, 4x2
F28 — F-250 Styleside, 4x4
X28 — F-250 (SuperCab) Styleside, 4x4
U22 — Explorer (2-door), 4x2
U32 — Explorer (4-door), 4x2
U24 — Explorer (2-door), 4x4
U34 — Explorer (4-door), 4x4
U35 — Explorer (4-door), AWD
U52 — Mountaineer (4-door) 4x2
U54 — Mountaineer (4-door) 4x4
U55 — Mountaineer (4-door) AWD
R10 — Ranger 4x2
R11 — Ranger 4x4
R14 — Ranger 4x2 (2-door SuperCab)
R15 — Ranger 4x4 (2-door SuperCab)
R18 — Ranger 4x2 (4-door SuperCab)
R19 — Ranger 4x4 (4-door SuperCab)

4. Engine

A — 2.3L EFI, four cylinder (Ranger 1997 and older)
6 — 4.6L EFI-SOHC (Windsor), eight cylinder (Econoline, F-150, F-250)
W — 4.6L EFI-SOHC, eight cylinder (F-150, F-250)
L — 5.4L EFI-SOHC, eight cylinder (Econoline, F-150, F-250)
S — 6.8L EFI-SOHC, ten cylinder (Econoline)
F — 7.3L Turbo-Diesel, eight cylinder (Econoline)
2 — 4.2L EFI-OHV, six cylinder (Econoline, F-150, F-250)
Z — 5.4L SOHC, gaseous fuel prep, eight cylinder (Econoline, F-150, F-250)
M — 5.4L SOHC natural gas, eight cylinder (Econoline, F-150, F-250)
X — 4.0L EFI-OHV, six cylinder (Explorer, Ranger)
E — 4.0L EFI-SOHC, six cylinder (Explorer, Mountaineer)
P — 5.0L EFI, eight cylinder (Explorer/Mountaineer)
B — 2.5L OHV-DI diesel, four cylinder (Ranger)
C — 2.5L EFI-SOHC, four cylinder (Ranger)
U — 3.0L, six cylinder (Ranger)

5. Check Digit


6. Model Year

V — 1997
W — 1998
X — 1999
Y — 2000
1 — 2001
2 — 2002

7. Assembly Plant

L — Michigan Truck (Wayne, Michigan)
S — Allen Park (Allen Park, Michigan)
H — Lorain (Lorain, Ohio)
C — Ontario Truck (Oakville, Ontario)
E — Kentucky Truck (Jefferson County, Kentucky)
K — Kansas City (Claycomo, Missouri)
N — Norfolk (Norfolk, Virginia)
U — Louisville (Louisville, Kentucky)
Z — St. Louis (Hazlewood, Missouri)
P — Twin Cities (St. Paul, Minnesota)
T — Edison (Edison, New Jersey)

8. Production Sequence Number

A00001-E99999 — Ford Division
J00001-L99999 — Lincoln-Mercury Division
 
  #9  
Old 07-09-2009, 02:29 AM
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Engine code G. It's supposed to be a 2 bbl 351W. The PO told me he had a problem finding a cap and rotor for it and thats how he discovered it was a HO motor. It does have a ford 4bbl intake, but like I said you could get that from a boneyard
 
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Old 07-09-2009, 02:53 AM
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did you ever try asking your engine?
give it a quart of oil, im sure it will start talking
 
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Old 07-09-2009, 10:15 AM
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351w or 351w h.o.

The engine vin code should be H for the H.O., The H.O. was with the 4v carb and intake also. If yours is a 84 like mine, it is rated at 210 hp. Hope this helps
 
  #12  
Old 07-09-2009, 06:57 PM
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Originally Posted by skysoldiervn View Post
The engine vin code should be H for the H.O., The H.O. was with the 4v carb and intake also. If yours is a 84 like mine, it is rated at 210 hp. Hope this helps

I'm trying to fing out if it's an actual HO or a regular with 4 bbl intake and carb. Is that the only difference between the 2 engines?
 
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Old 07-09-2009, 07:25 PM
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I keep seeing references to differences in the cam as well, but nothing really solid on that. One thing that might help is to ask numberdummy if there were two different cams available for the 1985 351w truck motors. Not sure if you'd have to pull the cam to find out the difference though. There is probably an easier way.
 
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Old 07-09-2009, 08:08 PM
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Originally Posted by andym View Post
I keep seeing references to differences in the cam as well,
Yep.. there was a 351HO and the cam was different than the regular 351 from that era...

 
  #15  
Old 07-13-2009, 01:55 AM
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Thanks all for the help, but I give up. I just discovered I have the bolt on type rotor which was only available on the 2 bbl 351 W in 1984.

So I either have a 351 HO with a 351 W distributor, or I have a 351 W with a 351 HO intake and carb.
 

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