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Old 02-13-2020, 08:26 PM
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blakeusa blakeusa is offline
350 Buick
 
Join Date: Jul 21, 2005
Location: Ashford, CT
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71 Original Undercoating?

Was wondering if anyone has replicated the OE undercoating on your trucks.

Primarily looking at redoing my bed underside.

I know the modern urethane bed liners are a better product but was going to spray mine with epoxy then apply some type (preferably near OE) over the epoxy.

Can't tell for sure if its an asphalt/ or rubberized based product.

Any feedback or results of what you used or would recommend would be appreciated.

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Old 02-16-2020, 01:11 PM
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Herk Herk is offline
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My 71 just has asphalt undercoating in the rear wheel wells, and not too evenly applied. I think the front legs of the rear flares were coated with the same stuff.
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Old 02-16-2020, 03:04 PM
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Odds are good it's an aftermarket coating. Out east it was likely Ziebart
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Old 02-17-2020, 07:28 AM
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Crankyolman Crankyolman is offline
327 Rambler
 
Join Date: Sep 27, 2017
Location: Pacific Northwest
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Mine is a '72 but I don't think they did anything different in '72 than in '71. My undercoat seems to be factory, was everywhere underneath, except the frame and was even under the carpet and extends up the firewall inside the cab, which is what kept the floorboard safe for 48 years, It seems to be a rubberized coating and is thicker in the wheel well and side panels and inside the cab but was thinner under the floor of the bed. I haven't yet tried to duplicate it but somewhere I have some sort of spray on rubberized undercoating I have hopes for but haven't tried yet.
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Old 02-18-2020, 12:05 PM
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As I recall, undercoating in that era was dealer-applied. As I remember, the cars wouldn't even be painted on the underside - just plain e-coat underneath. There may be spray-on sound deadening on the interior.
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Old 02-18-2020, 05:40 PM
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Crankyolman Crankyolman is offline
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Quote:
Originally Posted by tgreese
As I recall, undercoating in that era was dealer-applied. As I remember, the cars wouldn't even be painted on the underside - just plain e-coat underneath. There may be spray-on sound deadening on the interior.


My truck has body color paint (copper tan) underneath the under coat, it was fully painted top and bottom, and like I said it's everywhere but on the frame and appears to have been factory applied before the body and bed were installed since the bolts and the rubber pieces between the bed and the frame were not covered in it. If a dealer applied it they did a hell of a job.



As far as inside the cab I can't tell the difference between what's under the bed and what's inside the cab. It may be dealer applied sound deadening but they would have had to pull out all the firewall insulation and some other stuff as well as do a whole lot of masking to keep it off what it isn't on.


Maybe the original dealer for my truck just went above and beyond what any other dealer may have done but to me it seems rather unlikely that it would be where it is the way it is unless it was done at the factory.
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Old 03-04-2020, 06:24 PM
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rang-a-stang rang-a-stang is offline
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Mine is factory undercoated with rust.
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