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Engine & DrivetrainEngines and Drivetrains can be a major problem for a lot of vehicles. If you are having engine or drivetrain problems, you can post your questions/concerns about the issue. Furthermore, if you are in the process of doing an engine rebuild, post your progress with pictures.
The 351W and the 302 are interchangable. In theory...
Your heads will bolt up but the 351 heads use larger mounting bolts. If you want to use the 302 heads on the 351, you will have to have them machined. I recommend you have them machined anyway due to the fact that the stock heads don't breathe very well and you already have them off.
Your timing chain cover should bolt up but it depends on where the oil dipstick is mounted. bkf77 is correct about the external accessories and exhaust. Direct bolt ons.
The distributor is larger on a 351 so the 302 distributor is useless. Unless you can swap/sell it. The manifold from the 302 is definately worthless for the new engine if you are going carb. Even if you aren't, it can't be used because of the distance between the heads. The 351 has a longer stroke so they sit farther apart. Therefore, the manifold must be larger. You need a new one. Make sure you get a dual plane for more bottom end torque and match it with your carb. The carb brand designs ARE different if you look at them close (the way they mount/the size/the way to tune/many more differences). Don't go too big. Bigger is not always better. Especially with carbs.
You have a manual or auto tranny? You may have to have your flywheel balanced with your crank. Anyone know?
More things to think about... Are they both rear sump oil pans? Both forward?
I'm a big believer in the local machine shops and they are probably going to be your best bet for what is going to work/not work since they will be inspecting the parts.
you are going to have to find out which vacum lines you need for the 351w to run properly. as far as the bell housing I dont know for sure. you are going to have to reroute the exhaust. I chose to just put header on mine. I will check with a couple guys that build cars and find out about the other mods that might to be made but that is all I really know. hope it helps
Sorry, I assumed he already had headers. If he has headers, he won't have to reroute the exhaust.
The bell housing is exactly the same. It is the flywheel that may be different.
I didn't know about the bell housing, but I know now thanks. From his earlier post I thought he had a complete 351w if not I would stay with the fuel-injection. more efficient and more power.
I concur. But it can be a bitch trying to get it programmed. I know some of the Ford computers "learn" but do all? I'm more of a carb kind of guy. I've seen the effects of a radical cam on a stock computer though. Nothing worse than an idle always "searching." There are definate benefits to fuel injection and I would look to maximize those if possible.
I am the same way thats why I went with the carbrated 302. The fuel-injected one that was in my bronco to start with ran fine but, 1/2, 9/16 wrench, flat & philips head screw driver, hammer and tape I can make it home. lol
The 351 is carb. my bronco is an automatic I don't know about the one the 351 is coming out of. somebody I know at work is getting the bronco and selling it for scrap and I'm getting the engine out of it for mine. so I'll find that out when he gets it. I do have headers. the exhaust on the 302 is flowmaster I plan on switching it over to the other one. will the 302 headers match?
Make sure you unhook the headers from the pipes before unhooking them from the heads. You are going to want them out of the way when you pull the motor anyway. To remove the headers, you may have to remove the bolts from the front of each exhaust tube, loosen the aft bolts from each exhaust tube and translate the entire header forward to gain enough access to remove the aft bolts.
Also, take the time to remove the driveshaft to give yourself more room to translate the tranny aft and ensure it is clear when you pull the block. It may give you enough room to pull the engine without pulling the radiator. Make sure you protect the radiator with cardboard (or sheet metal if availible) and be careful. Sometimes it is just easier/faster to spend the time removing it altogether.
Again, anyone know if all Ford computers will "learn" the cam?
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