Screw Cap Master Cylinder
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Junior Member
Joined: Aug 2003
Posts: 92
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From: CT
Car: 1986 Trans AM
Engine: 396 LT1 Stroker
Transmission: 4L60E
Axle/Gears: Ford 9 Inch w/ 3:70 Gears
Screw Cap Master Cylinder
I was wondering if anyone has upgraded to a screw cap style master clyinder. I need to do so and would like a little input on it. Also does anyone know what the bore size is for a 86 trans am Master clyinder. I am planning on swapping to disc brakes in the rear.
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Joined: Jul 2009
Posts: 1,354
Likes: 4
From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: Screw Cap Master Cylinder
the ls1 mc is a direct fit. i posted bore sizes before. i'll find it for you.
Supreme Member
iTrader: (2)
Joined: Jul 2009
Posts: 1,354
Likes: 4
From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: Screw Cap Master Cylinder
the LS1 front and rear bores are 1", the 3rd gen 4 wheel disc is 1"x36mm. 3rd gen 2 wheel disc is 1.25x24mm.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
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