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6cuda6 · 01-14-2021, 10:29 AM

Hi guys, need some insight.

We have a 2008 Volvo 670 that we are going to use as the base for our RV but we want to put a 20 foot box on the back so we need to add about 5 feet of frame rail ahead of the axles and about the same behind the axles. Now the most logical thing to do is add the extra length we need to the end of the frame, slide the front axle back to rear position and re-drill for the new rear axle placement. My question is....could one bolt the frame extension on[with gussets of course] or does it have to be welded? This added section of frame really will only have about 8 feet of the box on it and its not like it going to have a fifth wheel on it pulling 80000lbs.

What do you think? Can it be bolted on or because its between the axles it needs to be weld?

01-14-2021, 10:29 AM	#1
6cuda6 Member Join Date: Oct 2020 Location: Brockville Posts: 90	Lengthening a frame? Hi guys, need some insight. We have a 2008 Volvo 670 that we are going to use as the base for our RV but we want to put a 20 foot box on the back so we need to add about 5 feet of frame rail ahead of the axles and about the same behind the axles. Now the most logical thing to do is add the extra length we need to the end of the frame, slide the front axle back to rear position and re-drill for the new rear axle placement. My question is....could one bolt the frame extension on[with gussets of course] or does it have to be welded? This added section of frame really will only have about 8 feet of the box on it and its not like it going to have a fifth wheel on it pulling 80000lbs. What do you think? Can it be bolted on or because its between the axles it needs to be weld?