351M Help
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From: Michigan
351M Help
I may have a chance to get my hands on a 351M which is mated to an NP435 and is currently sitting in a 76' Bronco.
I've never had a 351M and am curious to the pros & cons of the 351M vs. the 351W and 302's
It'd be stuck in my off-roading only 68 Bronco which currently has a stock 302's in it.
Any help you can give it greatly appreciated.
TIA
I've never had a 351M and am curious to the pros & cons of the 351M vs. the 351W and 302's
It'd be stuck in my off-roading only 68 Bronco which currently has a stock 302's in it.
Any help you can give it greatly appreciated.
TIA
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The 302 is lighter,more room to work,think about all those hi-po parts from mustang 5.0 that you can use.The trans.is great wish I did not give mine up,you will the small block bell housing,look in f-100,s with 300 6 cyl.eng. it will bolt up along with flywheel if memory serves,also the 460 is lighter I would have never thought but a mudding buddy proved it to me
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the 351m has some good points for one with a 400 crank and pistons you can get a 400 or 408 .030 over. The 460 is not lighter than the 351m. If you go to www.projectbronco.com then there technical section ther is alot of good info there.
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From: South...
Originally posted by DustyBottoms
The 302 is lighter,more room to work,think about all those hi-po parts from mustang 5.0 that you can use.The trans.is great wish I did not give mine up,you will the small block bell housing,look in f-100,s with 300 6 cyl.eng. it will bolt up along with flywheel if memory serves,also the 460 is lighter I would have never thought but a mudding buddy proved it to me
The 302 is lighter,more room to work,think about all those hi-po parts from mustang 5.0 that you can use.The trans.is great wish I did not give mine up,you will the small block bell housing,look in f-100,s with 300 6 cyl.eng. it will bolt up along with flywheel if memory serves,also the 460 is lighter I would have never thought but a mudding buddy proved it to me
Just curious...
Regards,
Scott
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302 = 460 lbs.
351m = 575 lbs.
429/460 = 720 lbs.
A 351M is not going to be much of a motor as is. Put a 400 crank and pistons in it and a good cam and you'll have a stump pulling monster. It won't wind like a 302, but it will have tons more torque, as well as almost 100 cubic inches more displacement.
351m = 575 lbs.
429/460 = 720 lbs.
A 351M is not going to be much of a motor as is. Put a 400 crank and pistons in it and a good cam and you'll have a stump pulling monster. It won't wind like a 302, but it will have tons more torque, as well as almost 100 cubic inches more displacement.
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460vs351m
I looked at the site that was sent to me, it seems as I was misinformed, we took both our broncos to the truck scale at the local scrap yard his came in a couple hundred pounds lighter than mine, mine was 351m fully dressed motor,his 460 no a/c or smog, so I guess that could have been the difference!!!! I did not mean to pass along any info. that was bad. I do not have much to do with 460s until I picked up this newest project.I aplogize for any confusion!!!!!!
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Any one have any specs on the 400 vs. say a 302 or 351w?
I keep hearing more torque but how much more and what about horsepower.
Also, is the 351m comparable in weight to a 351w?
TIA
I keep hearing more torque but how much more and what about horsepower.
Also, is the 351m comparable in weight to a 351w?
TIA
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Putting a 351m in a '68 bronco will not be as easy as it sounds. I'd be looking for a good 302 or possibly 351w for your project. Of course it looks like someone already swapped it into the '76, so maybe all the parts and headaches have already been taken care of.
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From: Michigan
My 68' is by no means stock. I have plenty of room for any motor. (No inner fenders not to mention I plan on moulding the firewall & floor around which ever motor goes in anyway.)
My 68' will be strickly off-road w/ full roll cage, modified body for clearance and visibility and a severely modified suspension system, so as you can see I'm not scared of making something fit where it currently doesn't.
My 68' will be strickly off-road w/ full roll cage, modified body for clearance and visibility and a severely modified suspension system, so as you can see I'm not scared of making something fit where it currently doesn't.
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You can get just as much horse power out of a 302 (if not more) and it is lighter and takes up less space in the engine compartment. A 351m is about as wide as a 460, just a few inches shorter-If you have room in your engine compartment, you might as well go all the way. 69' 460's had the most horse power so look for one if you want to do the conversion.