302 to 351m engine upgrade
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Joined: Aug 2007
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From: Ogden Utah
The motor mount towers are the same. I did this conversion in my 82 bronco and if I remember right i did not have to do any major fab to do it. Everything pretty much dropped in. mine was a 351w to a 400m swap. hope this helps.
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From: Virginia
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From: Virginia
The transmission will come with the torque converter if you get a used one. If you have any questions of what will interchange, just go to a site like autozone or napa, and plug in your truck and see what the part number is, and then plug in a 1980 truck with a 351m and see if the part number matches(starters, flexplates, torque converters, motor mounts, etc.)
If you get a used tranny, the first thing to do is to pull the torque converter out and replace the front seal. The torque converter sags when it's not installed and usually ruins the front seal of the tranny. When you re-install the torque converter, make sure you push and turn and push and turn many times to make sure you have it engaged all the way into the tranny.
I hope the 351m was from a 80-up truck and has a rear sump oil pan or you will need to round those parts up. You will also need to get a new y-pipe, and if it was from a truck, it should have the correct exhaust manifolds, otherwise....this free engine is not so free anymore is it?
If you get a used tranny, the first thing to do is to pull the torque converter out and replace the front seal. The torque converter sags when it's not installed and usually ruins the front seal of the tranny. When you re-install the torque converter, make sure you push and turn and push and turn many times to make sure you have it engaged all the way into the tranny.
I hope the 351m was from a 80-up truck and has a rear sump oil pan or you will need to round those parts up. You will also need to get a new y-pipe, and if it was from a truck, it should have the correct exhaust manifolds, otherwise....this free engine is not so free anymore is it?
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A 351m for free.... Is this a fresh engine?
More gas, probably less power, certainly no more.
Sell it and freshen your 302 with the money you save not fiddling with your trans, exhaust, cooling, linkages and the little things....
jmo
More gas, probably less power, certainly no more.
Sell it and freshen your 302 with the money you save not fiddling with your trans, exhaust, cooling, linkages and the little things....
jmo
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