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Old 04-10-2012, 09:53 PM
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401 Magnum

alright i'm just seeing what some opinions are on using a 401 magnum motor. to throw into a pulling truck. I know there are probably some better choices but do you think it'd be capable of doing well?


Mind you this is a Big Block V6 made by gmc.

Thanks for your opinions

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Old 04-10-2012, 11:47 PM
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Quote:
Originally Posted by Hick_101
alright i'm just seeing what some opinions are on using a 401 magnum motor. to throw into a pulling truck. I know there are probably some better choices but do you think it'd be capable of doing well?


Mind you this is a Big Block V6 made by gmc.

Thanks for your opinions
GMC made some awesome V6s. One of the things I liked about them, and I don't know if it's an actual real-world advantage but I thought it was cool, is that they ran the spark plug wires down the inside of the head.

I ask in all innocence what's it's take to power a winning pulling truck. If low rev industrial strength grunt is needed, you may be on to something. I could be wrong, but a 400 cube V6 has got to have a rotating assembly that weighs something like Rhode Island.

I don't believe anyone makes the parts that will hold the thing together if you have to spin it fast to win truck pulls. You can now school me on truck pulls; low end grunt or high end ponies?
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Old 04-10-2012, 11:54 PM
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I'm working from memory, but I don't recall GMC calling the 401 a magnum. They produced other V6 engines like the 351 that where both non-magnums (351) and magnums (351M) but didn't the 401 just come out as the magnum?
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Old 04-11-2012, 01:47 AM
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Quote:
Originally Posted by twistedaxle
I'm working from memory, but I don't recall GMC calling the 401 a magnum. They produced other V6 engines like the 351 that where both non-magnums (351) and magnums (351M) but didn't the 401 just come out as the magnum?
I intended to say I believe the 401 was just the 401. Other GMC engines were called magnums.
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Old 04-11-2012, 09:25 AM
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I remember a GMC V12 (2 6ers together) industrial engine a friend of mines dad had in a barn. I wanted it badly, no idea what the heck for. It probably weighs as much as a medium sized elephant.
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Old 04-11-2012, 11:11 AM
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Originally Posted by AutoGear
I remember a GMC V12 (2 6ers together) industrial engine a friend of mines dad had in a barn. I wanted it badly, no idea what the heck for. It probably weighs as much as a medium sized elephant.
GMC 702. It wasn't really two sixes. It had a single block and crank. And you're right; you need an engine stand that can support an elephant if you want to rebuild one of these things.

GMC looked at the parts in the bin after putting together a lot of 351s and decided to go for it. Valves and cylinder heads and the like. I'm not an engineer, but I don't see how bolting together two sixes would produce something that could hold up under the stresses it would likely see.
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