Difference between LT1 and L82 valve covers?
03-28-2011, 10:14 AM
#1
Burning Brakes
Thread Starter
Difference between LT1 and L82 valve covers?
Hi
I am trying to pair up my late 1977-82 L82 aluminium right valve cover with a left one and was offered early 1970 #3989005 LH valve cover.
What is the difference between early and late aluminium covers?
Can I mix and match these covers?
I am not bothered about originality as I will polish the set anyway.
Paul
I am trying to pair up my late 1977-82 L82 aluminium right valve cover with a left one and was offered early 1970 #3989005 LH valve cover.
What is the difference between early and late aluminium covers?
Can I mix and match these covers?
I am not bothered about originality as I will polish the set anyway.
Paul
Last edited by C3Paul; 03-28-2011 at 11:24 AM.
03-28-2011, 12:22 PM
#2
Race Director
The 78-80 L-82 aluminum valve covers, are the same as 69 350/350, 70-72 LT-1 and 73-77 L-82 covers, except that they're painted black.
81 L-81 and 82 L-83 valve covers are magnesium, not aluminum. Where as the 78-80's are painted black, with the tops of the fins left natural, the 81-82 covers are painted black with the tops of the fins painted light gray.
Because they're magnesium, removing the paint from 81-82 covers, will result in a pair of covers that will corrode and oxidize easily.
81 L-81 and 82 L-83 valve covers are magnesium, not aluminum. Where as the 78-80's are painted black, with the tops of the fins left natural, the 81-82 covers are painted black with the tops of the fins painted light gray.
Because they're magnesium, removing the paint from 81-82 covers, will result in a pair of covers that will corrode and oxidize easily.
03-28-2011, 12:47 PM
#3
Burning Brakes
Thread Starter
The 78-80 L-82 aluminum valve covers, are the same as 69 350/350, 70-72 LT-1 and 73-77 L-82 covers, except that they're painted black.
81 L-81 and 82 L-83 valve covers are magnesium, not aluminum. Where as the 78-80's are painted black, with the tops of the fins left natural, the 81-82 covers are painted black with the tops of the fins painted light gray.
Because they're magnesium, removing the paint from 81-82 covers, will result in a pair of covers that will corrode and oxidize easily.
81 L-81 and 82 L-83 valve covers are magnesium, not aluminum. Where as the 78-80's are painted black, with the tops of the fins left natural, the 81-82 covers are painted black with the tops of the fins painted light gray.
Because they're magnesium, removing the paint from 81-82 covers, will result in a pair of covers that will corrode and oxidize easily.
If I buy the Aluminium LT1 valve cover and strip and polish my 1980 L82 aluminium cover, I will be OK to go?
Paul
03-28-2011, 12:57 PM
#4
Race Director
03-28-2011, 02:29 PM
#5
Team Owner
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Hi,
Just to clarify,
There is a slight difference in the 71-72 LT-! left-side cover from the 69-70 left-side cover that I'm aware of... it's set up for a push-in rubber oil cap, not the twist-in cap.
I don't believe its possible to interchange the cap.
Probably only matters to 3 people in the whole world.
Regards,
Alan
Just to clarify,
There is a slight difference in the 71-72 LT-! left-side cover from the 69-70 left-side cover that I'm aware of... it's set up for a push-in rubber oil cap, not the twist-in cap.
I don't believe its possible to interchange the cap.
Probably only matters to 3 people in the whole world.
Regards,
Alan
03-28-2011, 02:42 PM
#6
Melting Slicks
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Hi,
Just to clarify,
There is a slight difference in the 71-72 LT-! left-side cover from the 69-70 left-side cover that I'm aware of... it's set up for a push-in rubber oil cap, not the twist-in cap.
I don't believe its possible to interchange the cap.
Probably only matters to 3 people in the whole world.
Regards,
Alan
Just to clarify,
There is a slight difference in the 71-72 LT-! left-side cover from the 69-70 left-side cover that I'm aware of... it's set up for a push-in rubber oil cap, not the twist-in cap.
I don't believe its possible to interchange the cap.
Probably only matters to 3 people in the whole world.
Regards,
Alan
I know the 72 has the drippers.
03-28-2011, 05:17 PM
#7
Team Owner
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Hi gg,
The 'over the counter' set I bought in 71 had the baffles, drippers, and push in plug.
I very rarely see the 'push-in' plug valve cover for sale. Just happens David Mayhew has (had?) a nice set for sale on the parts forum.
Regards,
Alan
The 'over the counter' set I bought in 71 had the baffles, drippers, and push in plug.
I very rarely see the 'push-in' plug valve cover for sale. Just happens David Mayhew has (had?) a nice set for sale on the parts forum.
Regards,
Alan
03-28-2011, 06:10 PM
#8
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LT-1 Valve covers
Hi. I just happen to have a new set finned aluminum valve covers original in the GM box sgathering dust in my garage. I bought to update another c3 but sold it. I bought online from somewhere. I will make you a deal if you want them..if not, no problem Jerry
03-29-2011, 05:53 AM
#12
Burning Brakes
Thread Starter
Thank you for your input.
The one I was offered is the twist-in oil cap style and in need of restoration.
This cover is perfect for my application as I will polish the set anyway.
Just awaiting for shipping cost
Paul
P.S. David, your set of coveres on the parts for sale CF is stunning.
The one I was offered is the twist-in oil cap style and in need of restoration.
This cover is perfect for my application as I will polish the set anyway.
Just awaiting for shipping cost
Paul
P.S. David, your set of coveres on the parts for sale CF is stunning.
10-16-2018, 10:02 PM
#14
Old Pro Solo Guy
My original 70s with the twist -on cap had drippers, yours should too.
10-17-2018, 10:19 AM
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