How long to polish?
A LOT. 
It took me about a week of working on it after work for about 2-3 hours a night. It came out great though. That was just the plenum. I did both runners in one day, of non stop polishing. About 10 hours I think. Its a bitch to do it good.

It took me about a week of working on it after work for about 2-3 hours a night. It came out great though. That was just the plenum. I did both runners in one day, of non stop polishing. About 10 hours I think. Its a bitch to do it good.
Joined: Dec 1999
Posts: 3,544
Likes: 19
From: WI,USA
Car: 89 FORMULA 350, 91 Z28 Convertible
Engine: ls1, LB9
Transmission: t56, Auto
Axle/Gears: S60/ 3.73
5 min. but, I cheated, I had my girlfreinds dad do it at work they have a high speed polisher for instuments. took him 5 min. and look like a mirror. I also got a plenuim ext. from a 89 tpi vette. so it would match you will need new screws or take off you washers for the vette ext.
Joined: Dec 1999
Posts: 3,544
Likes: 19
From: WI,USA
Car: 89 FORMULA 350, 91 Z28 Convertible
Engine: ls1, LB9
Transmission: t56, Auto
Axle/Gears: S60/ 3.73
I don't have any pics right now. no digital camera any more. I will take tons of pics I have the car all tore down so I will be taking pics of every thing.
Joined: Dec 1999
Posts: 3,544
Likes: 19
From: WI,USA
Car: 89 FORMULA 350, 91 Z28 Convertible
Engine: ls1, LB9
Transmission: t56, Auto
Axle/Gears: S60/ 3.73
oh If you can find a place by you that polishes band instuments they should do it real cheep being it takes them nothing to do it.
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Must be nice :-)