Tell me your results - Putting a 351W in shoebox ford. Any different than installing 289/302 ? Is is same dimensions -width/height /lenght
Im getting ready to do this soon. I have the engine with a 4x4 oil pan and opies engine mounts. Not sure what trans im using yet. Opies engine mount kits are on ebay. I searched and searched and couldnt find them. PM me if you need his ebay name.
I have one of those sitting on the floor that came out of a NASCAR truck and nothng to put it in...ho hum
351w Is taller and wider than a 289/302, but not longer. They use different intake manifolds because of it.
351w has a slightly taller deck height than a 289-302. It will push the valve covers out a bit further and closer to the hood. But you will have plenty of room in a shoebox. Rob
The increased deck height makes the 351W about two inches wider, and an inch taller than the 302. As noted, intake manifolds and distributors are different, head studs are one size bigger, and a number of other things (mostly minor) are different as well. Heads and headers generally will bolt up, but as always, fit can be an issue.
Headers designed for a 302 will bolt up fine to the motor, but may not fit properly in the car because of the height of the motor. I don't know if the motor mounts have the same distance between them, I think yes. Water pumps are the same, and the fan sits in the same place relevant to the crank.
opies engine mounts are for the ford small block family. I bought them for $140 shipped off ebay direct from opies.
I've seen quite a few run'n 351's. Def different dims but you shouldn't have a problem making it fit.
Distance between the motor mounts is the same. 221/255/260/289/302/5.0 have an 8.2" deck height and 351W has a 9.5 deck height. The difference is above the water pump bosses, thus the same water pump as mentioned above. The 351W uses bigger head and main bolts, bigger crank and rod journals, wider intake and different accessory brackets (because of the additional height). Heads are pretty much the same, all junk. The rear seal area of a 351W is bigger radius than the 302, the fronts are the same. If you have a 302 pan that works, you can replace the rear seal portion fwith one from a 351W pan and it'll work. A lot of welding but it can be done if no other pan is found that fits and a 302 sat there previously. SPark
put a 302/AOD in a 50...came out of an 85 T-Bird....trimmed out the back half of the front crossmember and boxed all back in for pan clearance...put a Mallory Dist. and 4Bbl on it;8" axle...Great driver
Brand new to this informative site-just put in a 74 351w nto a 1949 shoebox. had to modify firewall and floorpan to fit fmx trans. the motor fits nicely though,no height issue's. Had to cut up front crossmember.
351w heads aren't junk, they just won't flow at high RPMs. They are about as reliable as anything else. 69-70 heads have the same tiny exhaust ports as other SBFs, the intake ports and the valves are bigger and chambers smaller. I've always seen the 351w as a truck motor, unless you put on aftermarket or reworked heads. That being said, I have one in my A.
^Agreed^ Throw on a pair of Edelbrock or any other aftermarket street head, a hyd. roller cam and you've got a torque monster!
I'm helping a friend build his '50 Shoebox , using a 351W engine - had to trim the rear 1/2 of the front crossmember (like others have said) to clear the pan (larger oil pump) . Other than that , no issues .
I know SBF heads pretty well. We race and use them on everything. That being said, you can port them a lot and really pick them up. We turn 7500-7800 with very ported 289 heads (54cc chambers for more compression with flat top pistons). We also run a motor with World/Roush 200 heads and another with World Jr heads. We put 1.94-1.50 valves in 289 heads, drill the head bolt holes bigger, port them, convert them for screw in studs, open up the push rod slots, put on guide plates and go. The World heads area ready to go but still need some port work to clean them up. You can match a 289 head to a 1262 FelPro intake gasket and Mr Gasket header gasket and pick up a lot. Rework the bowls after cutting for bigger valves and work the short side radius and basically remove the exhaust valve quide "hump" to pick up even more. All SBF heads are so close to the same port wise, there is very little difference between them except for bowl size, rocker style, head bolt size and push rod guide holes. Do not waste money on the supposed 351 4v heads, no difference. Anyone with any 351 questions, feel free to contact me, we'll try to help all we can. SPark
The 1262 is a huge gasket...and it's what you have to do with stock heads. I disagree that there is no difference between 3514V heads. It's a misnomer - the '69 & '70 heads were different - stock. But who leaves them stock? I agree if you're saying that after you work them, there is no difference, so why start with the "desireable = expensive" early 351W heads. The '69 351W-4V had smaller chambers for the head and the block had a lower deck height (~0.020" if memory serves) to get the 10.7:1 CR on the 4bbl engines for '69 only. In '70, the blocks were the 9.5" deck height they are now and the chambers opened up a tiny bit. The ports were the same '69-70 castings and don't require as much work to match to a 1262 gasket as any other head, but still a bit of work. The valves were also larger, but that was true until sometime around '74. I like the early 302 heads with the heart-shaped chambers, personally. Lots of stroker kits for 351W these days too. When I built mine - there were no kits - I used Chrysler 318 rods, narrowed at the big end to fit the crank & Chryrler 340 pistons set up for floating pins (because of the 318 rods), but had to whack a bunch off the top of the piston - I wouldn't run a power-adder with this combo because I think the piston tops are too thin, but N/A it's a strong 374" w/heavily ported '70 heads. No doubt, I could pick up a bit of power with aftermarket heads though... As for putting it in a shoebox - any mount kit for a 289/302 will work for 351. As mentioned, it's slightly taller and wider, but there's ample room in the shoebox Ford. While I've never done a 351W swap into a shoebox Ford, I have done a 302 and was able to make late-model Mustang headers work just fine - I want to say even the H-pipe fit, but don't quote me on that - it was 15 years ago!
My51 had a 351w in it with a van pan i believe. it had mustang shorty headers & always had clearance issues with the steering box & post. I had the headers off about 5 times heating & bending them in closer to the block to make clearance.. then the engine developed other problems so I put in a 302 with a bronco pan & the same headers off the 351 & there is room around everything. first pic is 302 then 351. look at the steering post to header clearance.
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