You might want to replace the frame isolation rubber pads as the existing pads are likely crushed . Your '74 looks to have the OEM continuous pad front to back along the frame. Later units had a pad only where the body frame meets the chassis frame. You can buy a kit of pads from a GMC vendor or cut your own from a livestock pad available at TSC stores. The extra thickness of the new pads gives more clearance at the top of the engine. You can get to the body hold-down bolts while the interior is out. There are 4 corner bolted cushions as well you should check. If you go for the thicker pads, these also need to have spacers added to make up the extra thickness.
At the level of reconstruction you are at I would suggest Coosaboard as a non-rotting alternative to plywood for the subfloor. It is used in marine applications and has good stiffness and screw holding ability.
David I would love to use Coosaboard but I am afraid it does not fit in the budget. That stuff is crazy expensive. Approximately $2500 for the whole floor.
@@Mike_Classic_Cars-GMCMotorhome Got that! I did not spring for it either, even tho I was just doing the easily accessible areas without taking out the cabinets. If I win the lottery I will buy a second coach and do a cost-no -object restoration. Until then I am just trying to get mine useable for a few trips here and there
@@Mike_Classic_Cars-GMCMotorhome Thanks for the offer Mike. The only thing I can think of is the extrusion that locks the small table onto the dash, mine is missing.. I think it may be the same as the locking extrusion for the table.
@@Mike_Classic_Cars-GMCMotorhome the one in the back the edges have the look of water getting to it , hence the blacked color around the edges. I know that look from years of plumbing.
the wife and i have found one of these motorhomes that's in pretty good shape. looking forward to doing some of the things you doing with yours.
That's great to hear, hope the videos will help.
You might want to replace the frame isolation rubber pads as the existing pads are likely crushed . Your '74 looks to have the OEM continuous pad front to back along the frame. Later units had a pad only where the body frame meets the chassis frame. You can buy a kit of pads from a GMC vendor or cut your own from a livestock pad available at TSC stores. The extra thickness of the new pads gives more clearance at the top of the engine. You can get to the body hold-down bolts while the interior is out. There are 4 corner bolted cushions as well you should check. If you go for the thicker pads, these also need to have spacers added to make up the extra thickness.
I will look into that thanks
Jim Bounds said that you can make your own pads out of hockey pucks. However, you run the risk of having the Stanley Cup cancelled.
@@josephheston9238 As a Canuck I know how hard a hockey puck is!
At the level of reconstruction you are at I would suggest Coosaboard as a non-rotting alternative to plywood for the subfloor. It is used in marine applications and has good stiffness and screw holding ability.
David I would love to use Coosaboard but I am afraid it does not fit in the budget. That stuff is crazy expensive. Approximately $2500 for the whole floor.
@@Mike_Classic_Cars-GMCMotorhome Got that! I did not spring for it either, even tho I was just doing the easily accessible areas without taking out the cabinets. If I win the lottery I will buy a second coach and do a cost-no -object restoration. Until then I am just trying to get mine useable for a few trips here and there
Need anything from the stock interior? I do not plan on using much.
@@Mike_Classic_Cars-GMCMotorhome Thanks for the offer Mike. The only thing I can think of is the extrusion that locks the small table onto the dash, mine is missing.. I think it may be the same as the locking extrusion for the table.
@@DavidBond-lt7jb I don't have a small table. Send me a picture and I can look through some stuff that came with the mh.
Some of those sub-floors look rough. The blacking of the wood isn’t good .
I'm not sure what you are speaking of. The bottom of the flooring looks like it was treated with a tar like substance.
@@Mike_Classic_Cars-GMCMotorhome the one in the back the edges have the look of water getting to it , hence the blacked color around the edges. I know that look from years of plumbing.