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Old 01-02-2023, 12:32 PM   #18
57taskforce
All about them K’s
 
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Join Date: Jun 2014
Location: Farmington, New Mexico
Posts: 6,238
Re: The "Other" IROC-Z Thread

Looked over your spid a bit, not too bad you’ve got a package b (mid option level- code 1SB) Iroc (B4Z) and it’s a G92 car like mine- the performance 10 bolt rear option with disks and 3:23 gears, Posi etc. pretty good upgrade over the drums, and 2:xx gear a lot of them had. The 9 bolt borg Warner rear is a little stronger, but you can tell this one has a 10 bolt by the GU5 code. The BW’s used different ratio codes than the 10 bolts.
Not too shabby.
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'57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888
'72 K20 Cheyenne http://67-72chevytrucks.com/vboard/s...d.php?t=662879
‘69 K10 SWB http://67-72chevytrucks.com/vboard/s...d.php?t=805206
'98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 315/75/16's
‘87 IROC-Z all original 50K mile survivor TPI 305 IROC Blue
‘10 Camaro 2SS/RS Aqua Blue Metallic #93 -version 2.0
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