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cutwater
05-30-2007, 04:43 PM
I was told my boat probably came with the Ford 289 Interceptor engine. The guys I bought it from say it currently has a 351. However, the boat is still using the Interceptor manifolds, so I'm guessing the 289 and 351 are in the same family?? Or was there also a 351 Interceptor? Or is it actually a 289 and they just misidentified it? Pardon the stupidity, but I don't know anything about Fords. I'll look around for a block casting number on mine when I get a chance.

I know many 16s were later repowered with HM 351s. Where are my Ford experts?

vonkamp
05-30-2007, 04:55 PM
Not a Ford expert by any means but the 289, 302, & 351 windser (sp?) can use the same heads so you could theroeticly bolt those manifolds to any of the 3. Someone else will probably be able to id the engine by your photo.

mrfixxall
05-30-2007, 05:36 PM
Google The Casting #s You Should Find The Info Their..

BigGrizzly
05-30-2007, 07:27 PM
Interceptor did make a 351 too but not in a small donzi. the heads are the same configuration but not the same heads.

zimm17
05-30-2007, 08:48 PM
351's have a higher deck height than the 289/302's. So the intake manifolds are wider and the distributor is taller. Most of the other parts are the same. I'm sure you can find some measurements on the internet to tell the difference.

Found this on a quick search of a ford forum:

"351's have a support cast in by the distributor hole, 302's don't. As you stare at the front of the engine, it's a triangular support that goes from the intake mating surface down to the machined surface for the distributor. Kind of tough to tell unless you have a 302 and 351 sitting side by side but thought it may help.

I'm new and I know this info is late but here it goes: The 351 has a higher deck height. On the 302 the heads sit almost on top of the water pump. On the 351 there is about an inch extra of block above the water pump. Hope this helps."

slamdry
05-30-2007, 09:16 PM
if you pull a valve cover there also should be a casting number as to what motor it is as well.

mrfixxall
05-30-2007, 09:27 PM
Heres some pics of a late model 302 with gt40 heads...

showtime
05-30-2007, 10:18 PM
351w uses 16 intake manifold bolts, a 289/302 uses only 12. Any hardcore blue bleeding Ford puke like myself should know this!

cutwater
05-30-2007, 10:22 PM
351w uses 16 intake manifold bolts, a 289/302 uses only 12. Any hardcore blue bleeding Ford puke like myself should know this!

Thanks Showtime. That should be easy enough to check next time I'm near the boat.

mrfixxall
05-31-2007, 01:29 AM
351w uses 16 intake manifold bolts, a 289/302 uses only 12. Any hardcore blue bleeding Ford puke like myself should know this!
The engine in the pic i posted only has 12 intake bolts:confused: its a 302 with 351 gt 40 heads,,were they differant on carb models? i think the 351 clevland and modified had 16 bolts..

Rootsy
05-31-2007, 07:15 AM
351W has a different firing order than the 221 / 260 / 289 / pre-85 302... the 221 family firing order is 1-5-4-2-6-3-7-8, the 351 and post 85 302 firing order is 1-3-7-2-6-5-4-8 (CCW around the cap)

351W has a taller deck height therefore is wider and taller than the other windsor family engines... which makes the intake manifold wider... if you place the 289 / 302 next to a 351 W the difference is extremely apparent. At one time i could tell you the width of each intake manifold but that bit of info eludes me these days and i havn't played with my little screaming 289 in a long time..

BillG
05-31-2007, 07:22 AM
Early 351's had 16 bolt intakes. The later ones use the same heads as the 302 and have 12 bolt intakes. The head bolts are larger on the 351, but the newer heads have larger holes to allow there use on 302s and 351s. if you use the heads on a 302 you have to use a special washer under the bolt heads. The only parts that don't interchange are intakes, distributors and oil pans. That is on the outside of the engines. There are internal thing that are different. 351Clevelands had canted valve heads and don't fit without major changes.

BillG

MOP
05-31-2007, 08:04 AM
Don't forget the HO firing order!

BigGrizzly
05-31-2007, 09:36 AM
There was a firing order change because of a harmonic problem, however it really doesn't matter as long as your firing order matches the cam. According to Babe Erson the harmonics don't show up until about 7600 RPMs. At this point I hardly play with the Windsor series because both my Corsican and 71 MachI have Clevelands in them.

TXDONZI
06-02-2007, 11:36 AM
Griz... Where did you find manifold or headers for a Clevland in a marine application?

BigGrizzly
06-03-2007, 10:22 AM
I have an original H&M 351C in my Corsican. To keep it stock I kept the Cleveland. The intake manifold is dry so To preserve the 1 of 1500 special manifolds I replaced it with a Wieland. They make them for the big and small port 351c as do the eldebroch, The performer series works in a boat as well as the torquer but has better volumetric efficiency in a boat application. As for the Exhaust I had CMI make Mine after the original were crap. Osco them for the 351m which is the small port Cleveland head. It was a long hard pull but I a glad I kept it as original as I did. This year I had the best looking Corsican at the Cumberland event and the only one! This is the only time I can feel special.