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Old 11-14-2008, 11:05 PM   #1
HillClimber
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boxing in frame

looking at building a pro street truck and was curious how much hp the frame can take without twisting excessively. Curious of how many people have boxed it in or if it is worth messing with.
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Old 11-15-2008, 12:08 AM   #2
Willys47
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Re: boxing in frame

Copper head can or is running about a 1000 all jucied up so I'll go with that as a max
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I was hooked on these trucks since 1982 when I drove my budys fathers 1968 Custum GMC 396 automatic dana 60 rear with a power lock diff what a ride more fun then we will we can ever tell!!

Last edited by Willys47; 11-15-2008 at 12:08 AM.
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Old 11-15-2008, 12:52 AM   #3
jwn1975
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Re: boxing in frame

A buddy of mine drag races his all steel 68 swb. It has a 555 bbc and runs mid 9's at 3700 feet. It pulls the front tires HARD on that old barn door but she runs. No frame tweaking at all thus far and just this year after 8 yrs of wheel yanking, he has had to adjust one lower fender gap. And it was better than most trucks ive seen that are "show trucks"
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Old 11-15-2008, 09:40 AM   #4
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Re: boxing in frame

Thanks for the info, I couldnt remember if copperhead did or not, but looking at the pics doesnt look like he did.
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