[boothboy]

OK here it is. Gm changed their ventilation system in 1968 and fiddled with it for years. The idea was to keep a positive pressure inside the cabin so it would lessen the chance of CO poisoning if a exhaust leek occurred. In 1971 they came up with the idea that they could exit interior air through vents in the top of the trunk lid. Great idea. Holes in top of the trunk lid. From the factory. The trunk lid drainage from rain was figured at 10 GPM ( I believe that was the figure but I might be wrong but close). It worked great! Except for one little thing they overlooked. Drive through car washes at the time worked at 14 GPM. Guess what? Yep water leakage in the trunk. The engineering and problem solving department put their heads together and finally came up with a solution. When the water leaked into the trunk it came out of a large circular area in the middle of the drain channels that were on the bottom side of the trunk lid. The channels were open to air on the inner lip so the would dry and rust wouldn't form. That inner lip was where the water escaped. The fix? A new GM part was manufacturer, part # 27463850bwy67596983y6-645231895735246586969356232557A . The part? A square of foam like material. Mom used to call it a sponge. The highly trained automotive technition stuffed the sponge into the hole and voo-la' no more leak!

Somebody ask a new Question.

[nissan]

the great american race is comming thru Franklin,PA this friday.not much happens in this sleepy little town.

[boothboy]

Get your lawn chair and umbrella. It's a pretty good show.

[MARTINSR]

Originally Posted by boothboy

OK here it is. Gm changed their ventilation system in 1968 and fiddled with it for years. The idea was to keep a positive pressure inside the cabin so it would lessen the chance of CO poisoning if a exhaust leek occurred. In 1971 they came up with the idea that they could exit interior air through vents in the top of the trunk lid. Great idea. Holes in top of the trunk lid. From the factory. The trunk lid drainage from rain was figured at 10 GPM ( I believe that was the figure but I might be wrong but close). It worked great! Except for one little thing they overlooked. Drive through car washes at the time worked at 14 GPM. Guess what? Yep water leakage in the trunk. The engineering and problem solving department put their heads together and finally came up with a solution. When the water leaked into the trunk it came out of a large circular area in the middle of the drain channels that were on the bottom side of the trunk lid. The channels were open to air on the inner lip so the would dry and rust wouldn't form. That inner lip was where the water escaped. The fix? A new GM part was manufacturer, part # 27463850bwy67596983y6-645231895735246586969356232557A . The part? A square of foam like material. Mom used to call it a sponge. The highly trained automotive technition stuffed the sponge into the hole and voo-la' no more leak!

Somebody ask a new Question.

LOL, I had a 71 Riv (one of the coolest cars I have ever owned) and it had the vents in the trunk lid, I wonder if it had sponges stuck in there.

Brian

[boothboy]

Ok No one is alive out there. Come on guys join in.
He is a easy one. What is this car?

[MARTINSR]

Originally Posted by boothboy

Ok No one is alive out there. Come on guys join in.
He is a easy one. What is this car?

Ok, this is digging out into some dusty areas of my brain but I seem to remember that being a rotary engine powered Corvette concept car.

Brian

[boothboy]

Actually it was a platform for a number of engines and was slated for production but was killed at the last moment. It had a specific name. What was it?

[cobalt327]

I wonder what the aero numbers were for it?

[MARTINSR]

The Aerovette, I get it, I didn't want to google, that was just enough. It's your floor Cobalt you're the one who got it.

Brian

[boothboy]

Colbalt327 you devil you! Yup that's it. The car was scedualed for production and got pulled at the last minute. This one was the XP-895.

[boothboy]

Colbalt 327 your up.

[cobalt327]

Originally Posted by boothboy

Colbalt327 you devil you! Yup that's it. The car was scedualed for production and got pulled at the last minute. This one was the XP-895.

Oh, I cheated too. I bumped into it while trying to confirm it was a Mako. Which it wasn't. Besides I don't have a ?. Sorry to have mucked things up, guys.

Open floor.

[MARTINSR]

What was the piece taken from a 50ish Olds and put on 50ish Chevys that was popular in customizing your Chevy? (and still is for that matter)

Brian

[boothboy]

Some one else should be asking a question but I came across a great pic so I'll turn it into a question.
This one is different from almost all the rest. What's the difference and why?

[John long]

Originally Posted by MARTINSR

What was the piece taken from a 50ish Olds and put on 50ish Chevys that was popular in customizing your Chevy? (and still is for that matter)

Brian

Would you be talking about the one piece windshield?