Modifying the ball flanges on 2055s?
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Joined: May 2003
Posts: 1,995
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From: Toledo, OH
Car: 1992 Firebird
Engine: forged 357
Transmission: 700r4, 2200-2400 stall, vette servo
Axle/Gears: stock pegleg 2.73 drum (temp)
Modifying the ball flanges on 2055s?
How many of you guys have cut the flange down a little to allow for better airflow? How far down did you trim it? What tool did you use (bandsaw/hacksaw? torch? grinder?) and do you have a good seal still?
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
1) Trial fit the y-pipe to the headers as installed in the car.
2) Remove y-pipe and determine where the y-pipe mates to each ball flange.
3) Using 4" high speed angle grinder, open up the ball centered where the y-pipe mates. Clean up flashing with die grinder if necessary (my die grinder wouldn't touch the flange itself, but the angle grinder did a bang-up job).
No leakage problems.
2) Remove y-pipe and determine where the y-pipe mates to each ball flange.
3) Using 4" high speed angle grinder, open up the ball centered where the y-pipe mates. Clean up flashing with die grinder if necessary (my die grinder wouldn't touch the flange itself, but the angle grinder did a bang-up job).
No leakage problems.
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