Rear cab overhang and bed mock up help

On the back of the cab there is about 3" of overhang. It fully wraps around the back of the frame. I am going to start mocking up the bed soon and it seems to me there is way too much fiberglass here. The manual doesn't mention it at all and I can only find one thread where it was discussed. I was considering removing all of it but I'm not sure

You can see at least the one side in this picture

https://thefactoryfiveforum.com/atta...1&d=1777149362

When the truck was shipped they laid the bed on top of the fiberglass. Is this right? Seems like it would create a slope. I am a little nervous about it. I only want to cut once if you know what I mean. I am not sure how to proceed

https://thefactoryfiveforum.com/atta...8&d=1761695449

Really appreciate the benefit of your experience. Any and all advice would be appreciated.

Jesse

Jesse, check my build thread and see how I cut the lip.

Mark

If he doesn't see this and reply reach out to Ron Everitt "FFinisher". I don't think anyone has built more pickups than him.

Jeff

Quote:

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Originally Posted by mkassab

Jesse, check my build thread and see how I cut the lip.

Mark

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Thank you! Was the lip you left the gap between the bed and the back of the cab? Can you confirm the 3/8 gap you left was what worked or did you need make changes later?

Quote:

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Originally Posted by Jeff Kleiner

If he doesn't see this and reply reach out to Ron Everitt "FFinisher". I don't think anyone has built more pickups than him.

Jeff

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Mail box is full. Lol

Quote:

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Originally Posted by Blitzboy54

Thank you! Was the lip you left the gap between the bed and the back of the cab? Can you confirm the 3/8 gap you left was what worked or did you need make changes later?



Mail box is full. Lol

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I just emptied my inbox, sorry about that.

I do not cut the cab overhang. Secure the bedsides to the overhang at the front. I have one here the customer cut the overhang and it leaves a gap between the cab and the bed. Not ideal. If you have the aluminum floor it will go right over the overhang. Measure the spacing for the bed sides equally on each side from the edge of the cab to the bed side. I set them at about 7/16 of an inch. There are 100 ways to do this, this is how I do it.

I fitted the cab and bed SS sheet at the same time. That drove what I cut so they didn't interfere with each other. The small lip on the cab will allow for a good sealant seal between the cab lip and the aluminum plate that's on the frame. Then, when you build the bed, it doesn't interfere with the cab at all and can be dismantled later (if needed) that won't impact the cab at all.

Let me know if you need anything else.

Mark

I used a 1.5x1.5 aluminum angle to help seal the cab rear to the chassis. My manual showed a very large sheet metal piece at that location, found out this was only for the older regular cab. My aluminum angle was turned so that it contacted the inner rear wall of the cab vertically, then angled to the back of the chassis. It was this angle that determined the length of the cab overhang for me. I trimmed the cab flush with the farthest back edge of the angle. Approximately 1 inch of overhang. Then when I set the bed, I set the front edge of the bed flush so the 1 inch cab flange. Everything aft of that lined up well and I have a 1 inch gap from cab to bed. The stainless bed floor sits level. The front edge if the bed floor sits on the lip of the bed front, but I used 1/8 thick self adhesive 1x1 foam strip on all of the Chassis tubes to limit vibrations.

Attachment 228625

I also left all of the side flange on the cab. this gave me more area to bolt bed to cab on the sides.