RPO Codes
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Joined: Feb 2020
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From: Great Southwest
Car: 86 IROC Z28
Engine: 305 TPI
Transmission: 700 R4
Axle/Gears: Factory Stock
RPO Codes
I've been researching the RPO Codes on my 1986 IROC Z and found most with the exception of D6F and 88P. Does anyone have any ideas on what these two codes translate to? Also does anyone have the complete list of RPOs used for 1986
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Joined: Oct 2024
Posts: 46
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From: Las Vegas, NV
Car: 1987 IROC
Engine: 305 but working on 350
Transmission: 700R4
Axle/Gears: 3.23 Posi
Re: RPO Codes
I know it's old thread, but I have the same 88P and can't find any info on it...did you ever resolve this mystery? And D6F is "Speedo Driven Gear" code....
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: RPO Codes
88P = Wheel color.
88 comes back as Blue or a Purple color, but I cannot find anything defining what wheel color it would be for 1986.
in 1986 on the Firebird the 88A was a stripe color of Silver & Bright Blue therefore so the 88 color being a blue hue seems consistent, but what the exact color is I do not know.
Colors 82 (interior), 84P (Wheel) were all Gray in color 84U, 84L, 87U & 87L were gunmetal metallic colors for the period, so it is possible the 88 was a different hue of Gray.
John
88 comes back as Blue or a Purple color, but I cannot find anything defining what wheel color it would be for 1986.
in 1986 on the Firebird the 88A was a stripe color of Silver & Bright Blue therefore so the 88 color being a blue hue seems consistent, but what the exact color is I do not know.
Colors 82 (interior), 84P (Wheel) were all Gray in color 84U, 84L, 87U & 87L were gunmetal metallic colors for the period, so it is possible the 88 was a different hue of Gray.
John
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