box or plate for shortened frame - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sparkyhunt · 08-24-2009, 07:52 PM

I just shortened my frame using the step method and was wondering if I should weld a plate to the backside or if I should box the frame in? Also what size metal for the plate or box? Thanks

bedsled71 · 08-24-2009, 08:17 PM

either should work ... use 1/8 or 3/16

Ronm909 · 08-24-2009, 09:24 PM

dont buy the CPP frame stiffener, it is made just for that but it did not fit and then to try to get any help from those guys is imposible

SCOTI · 08-24-2009, 09:27 PM

Quote:

Originally Posted by Ronm909

dont buy the CPP frame stiffener, it is made just for that but it did not fit and then to try to get any help from those guys is imposible

I got some from ECE & they fit. I did this conversion & used 3/16" for fish plate & boxing.

ghettoluxury · 08-24-2009, 09:48 PM

3/16 and just plating is fine unless you want a fully boxed frame

newagecustom · 08-25-2009, 10:41 AM

Its stronger to fish plate the directly over the joint than to box the frame. If the weld cracks the crack will run into the plate and stop instead of continuing all the way through. Here is a pic of a 66 frame i shortened to a SB wheelbase.

sparkyhunt · 08-25-2009, 05:59 PM

3/16th plate it is. thanks for the input.

p8ntballer1911 · 08-25-2009, 07:59 PM

Doing both would be fine to!

08-24-2009, 07:52 PM	#1
sparkyhunt Registered User Join Date: Jul 2009 Location: WI Posts: 9	box or plate for shortened frame I just shortened my frame using the step method and was wondering if I should weld a plate to the backside or if I should box the frame in? Also what size metal for the plate or box? Thanks

08-24-2009, 08:17 PM	#2
bedsled71 Registered User Join Date: Feb 2007 Location: yuma arizona Posts: 448	Re: box or plate for shortened frame either should work ... use 1/8 or 3/16

08-24-2009, 09:24 PM	#3
Ronm909 67GMC Slammed Join Date: Feb 2009 Location: Rancho Cucamonga, Ca Posts: 255	Re: box or plate for shortened frame dont buy the CPP frame stiffener, it is made just for that but it did not fit and then to try to get any help from those guys is imposible

08-24-2009, 09:48 PM	#5
ghettoluxury Registered User Join Date: Apr 2009 Location: Waynesfield Ohio Posts: 1,991	Re: box or plate for shortened frame 3/16 and just plating is fine unless you want a fully boxed frame __________________ 1949 Five Window, 1973 Step Side, 2000 Z71

08-25-2009, 10:41 AM	#6
newagecustom c10 Chop Artist Join Date: Feb 2007 Location: az Posts: 481	Re: box or plate for shortened frame Its stronger to fish plate the directly over the joint than to box the frame. If the weld cracks the crack will run into the plate and stop instead of continuing all the way through. Here is a pic of a 66 frame i shortened to a SB wheelbase. Attached Images

08-25-2009, 05:59 PM	#7
sparkyhunt Registered User Join Date: Jul 2009 Location: WI Posts: 9	Re: box or plate for shortened frame 3/16th plate it is. thanks for the input.

08-25-2009, 07:59 PM	#8
p8ntballer1911 Bodydropped71 Join Date: Jun 2008 Location: Conroe Texas Posts: 264	Re: box or plate for shortened frame Doing both would be fine to!



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