300 six to replace 351m??
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300 six to replace 351m??
I just got a 78 Bronco that has a 351m, C6,205 t-case. I have been out of the engine swap arena for 20 plus years, so here is my question if you do not mind. I love the 300 six...my favorite motor of all time. Will the 300 bolt up to the C-6 thats in the Bronco? I am guessing no since the 351m is a big block pattern? Hopefully I get good news as I would love to build a 300-6 and put in this bronco
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Joined: Dec 2000
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From: South central, Minnesota
Small block 4x4 C6's are pretty easy to find. Look for them in 1980+ Fullsize trucks and Bronco's. They came behind 300's, 302's and 351W's. And Ford built a whole lot of them in the 80+ 4x4's. Look at the engine and if it's one of them I mentioned above then look at the shift indicator. If there is no circle around the "D" it's a C6.
You will also need to do something with the motor mount frame perches/towers. The 300 takes a different tower/perch. If you want to replace them you'll need to find a pair out of a 78 or 79 F150 4x4 with a 300. And that will be harder to find then the C6 will be. The other/easier option is to just modify the stock 351M/400 perches. I'm not sure what would be required. You'll have to drop the engine in and see how it will sit and what will need to be modified.
You will also need to do something with the motor mount frame perches/towers. The 300 takes a different tower/perch. If you want to replace them you'll need to find a pair out of a 78 or 79 F150 4x4 with a 300. And that will be harder to find then the C6 will be. The other/easier option is to just modify the stock 351M/400 perches. I'm not sure what would be required. You'll have to drop the engine in and see how it will sit and what will need to be modified.
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