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Old Oct 15, 2009 | 08:42 AM
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Default hood insulation

did my 72 LT1 come with hood insulation.None on it when i purchased it.
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Old Oct 15, 2009 | 09:15 AM
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No hood insulation until '74 (I think).
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Old Oct 15, 2009 | 11:42 AM
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Ok ,thanks for the quick responce
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Old Oct 15, 2009 | 11:51 AM
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Originally Posted by 7T1vette
No hood insulation until '74 (I think).
My '69 has it. However, according to NCRS Judging manual: "...was used sporadically until late in production when it disappeared. There is no pattern for this use, but it seems to have been more common on 427 cars."

Not sure about '72.
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Old Oct 15, 2009 | 11:59 AM
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Originally Posted by one-72
did my 72 LT1 come with hood insulation.None on it when i purchased it.
Possibly. Can you see evidence of where the retainers were attached to the hood? (Round circles)

Beginning with the 71 models, GM had to meet sound level requirements so there could have been a hood blanket for this purpose.

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Old Oct 15, 2009 | 12:32 PM
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72 did not use a hood pad. Some 69's had a short pad at the front of the hood, mainly on big blocks, but small block cars have shown up with them too. After 69, they weren't used again until 73, when full pads were installed on all Corvette hoods until 1980, when they were again eliminated.
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Old Oct 15, 2009 | 02:03 PM
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My 73 SB as full insullation
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Old Oct 16, 2009 | 10:32 AM
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Originally Posted by gbvette62
72 did not use a hood pad. Some 69's had a short pad at the front of the hood, mainly on big blocks, but small block cars have shown up with them too. After 69, they weren't used again until 73, when full pads were installed on all Corvette hoods until 1980, when they were again eliminated.
Quite true. In 1973 cowl induction was introduced and the sucking sound from that was fairly loud. I guess the pad was an attempt to cut down on the decibels. GM gave up on cowl induction in 1976.

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Old Oct 16, 2009 | 12:38 PM
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My 73 also had hood insulation. I removed it when I cut the hole for the supercharger. It was pretty messed up from age, and an engine fire. I also chiseled off the retainer clips. I'm thinking about putting some insulation under the hood again some day, but it's a low priority at the moment. I'll be lurking to see what others suggest or show that they've used.
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Old Oct 16, 2009 | 06:02 PM
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Originally Posted by 1ARACE
My '69 has it. However, according to NCRS Judging manual: "...was used sporadically until late in production when it disappeared. There is no pattern for this use, but it seems to have been more common on 427 cars."

Not sure about '72.
I suppose because the 427 was such an oil leaker.
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