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The insulation was missing from my 79. I bought replacement but here's my question. How much or how far down should it go? The piece I bought seems to be longer than what was in the car (from what I can tell). Anyone have any pics of what it should look like?... Tony.
On my '79 L48 it's a short one. Covers about half the hood.
On my 78 hood,you can see a "Layout" (round circle of dots) beyond hood insulation...where additional pins could be installed..but never were used...I thought it had to do with difference in air intake over radiator..(L-48 vs L-82).???
same on my L82...halfway. I'll try to peek at the AIM and see if the detail shows
Here is pic of mine...you can make out pin locations not used beyond bottom of insulation pad......when I purchased the replacement from GM,they said the "half" pad was correct for L-82....
I have seen many 79 L-48 and one 78 L-48 with the long pads...
I had this same question not long ago when I got my 79 painted and replaced the insulation.
The old insulation I had covered the whole underside of the hood, but the new insulation I got only covered half of it. I kind of like the looks of the smaller pad.
From what I found, the half hood insulation is most likely the original.
My car had also been painted back in the 80s and I think they added the long insulation then, but don't know for sure. As another suggested, I suppose it's possible that it varied based on model even within the same year.
ZIP has two choices...GM style half mat for 76-79 and a full hood mat(not noted as GM style) for 76-79......
Not sure what that means...(have not received AIM for 78 yet....)
Found nothing at Dr Rebuild for 78-79...
Last edited by rihwoods; Mar 21, 2006 at 04:04 PM.