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Old 09-29-2013, 04:52 PM
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Boxing the frame of a 56 3100 truck

Ive got a 56 chevy 3100 pick up that is going to be getting a big block soon. Any suggestions as far as boxing the frame? Fabing the mounts up and boxing the frame is def. work that I can handle myself. Im just curious as to what other opinions are on boxing the frame. I have built jeeps for the last 25 years and I know that jeep frames should not be completely boxed. Should I box just the part of the frame where the motor mounts will go or box the entire front part of the frame? Thanks in advance for any advice.

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Old 09-29-2013, 05:17 PM
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Quote:
Originally Posted by smokd View Post
Ive got a 56 chevy 3100 pick up that is going to be getting a big block soon. Any suggestions as far as boxing the frame? Fabing the mounts up and boxing the frame is def. work that I can handle myself. Im just curious as to what other opinions are on boxing the frame. I have built jeeps for the last 25 years and I know that jeep frames should not be completely boxed. Should I box just the part of the frame where the motor mounts will go or box the entire front part of the frame? Thanks in advance for any advice.
GMC division installed Pontiac motors in the '56 with an otherwise stock frame and I suspect the weight is similar to a BBC. So, my question would be....why box it?
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Old 09-30-2013, 08:53 PM
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a little cool factor and the fact these frames flex a lot.
a 56 frame is straight with the exception of a slight bump over the rear axle.
i had some 10 ga steel sheared to fit the frame and welded it in.
i'd suggest replacing the stock x-members and not reusing some like i did.
more c-notch if your going to flip the axle too

my 58 frame







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Old 10-06-2013, 08:05 AM
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Thanks for the advice fellas. Ill post up pics when I figure out what I am doing. I'm dealing with the steering and headers so I only have to make the motor mounts once. I hope!
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Old 10-06-2013, 12:40 PM
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you can see my $5 motor mounts in the 3rd picture above or use this type
either way you shouldn't have more than a couple bucks in motor mounts.

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Old 10-06-2013, 01:50 PM
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If you want to make it look better, if you want to just have fun and do it, what ever, but I can't imagine a need to box the frame on one of these trucks. Not unless you were running GOBS of horsepower and slicks and all that. Big block, the weight means nothing, crap the stock inline six with the stock compound low four speed probably weighs MORE than the big block and a TH400! With my 48 I ran a 401 Buick with a th400 and tires that provided zero wheel spin at the drags turning very respectable 60 ft times never saw one single reason, not even the hint of one to need boxing the frame. And the 55-59 Frame is way stronger and larger than the 47-54 frame. Honestly, I don't think there is any reason to think about it, strength wise.

Brian
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Old 10-07-2013, 09:40 AM
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Originally Posted by MARTINSR View Post
If you want to make it look better, if you want to just have fun and do it, what ever, but I can't imagine a need to box the frame on one of these trucks. Not unless you were running GOBS of horsepower and slicks and all that. Big block, the weight means nothing, crap the stock inline six with the stock compound low four speed probably weighs MORE than the big block and a TH400! With my 48 I ran a 401 Buick with a th400 and tires that provided zero wheel spin at the drags turning very respectable 60 ft times never saw one single reason, not even the hint of one to need boxing the frame. And the 55-59 Frame is way stronger and larger than the 47-54 frame. Honestly, I don't think there is any reason to think about it, strength wise.

Brian
Thanks, I'm thinking its not going to get boxed but I had to get other opinions. I'm used to building jeeps/rockcrawlers where EVERYTHING is built way overkill.
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