This is all of the official information taken from the Corvette Black Book.

1987 Numbers
Vehicle: 1G1YY2182H5100001 thru 1G1YY2182H5130632
For Convertibles, sixth digit is a 3.
Ninth digit is a check code and varies.

Suffix:
ZJN: 350ci, 240hp, at ZLA: 350ci, 240hp, at, oc
ZLC: 350ci, 240hp, mt, oc ZLB: Export

For Callaway twin-turbo, Chevrolet engine coding was replaced as follows:
First two digits for year, next three digits for Callaway sequence, last four digits to match last four digits of vehicle identification number.

Block: 14093638: All
Head: 14101128: All

Abbreviations: at=automatic transmission, ci=cubic inch, hp=horsepower, mt=manual transmission, oc=engine cooler.

1987 Facts
Friction reduction from roller valve lifters (new for 1987) resulted in a power increase to 240hp, up 5hp from 1986's aluminum-head engines.
Center sections and radial slots of 1987 wheels were painted argent gray. 1986 wheel centers were not painted. Centers and radial slots for 1984 and 1985 were painted black.
Convertibles and early coupes had outside miror air deflectors.
Chevrolet planned an RPO UJ6 low tire pressure indicator option, but the $325 option was on constraint during 1987 due to false signalling problems. However, Chevrolet records show forty-six units sold.
The RPO Z51 package was refined to include structural enhancements developed for the convertible, and a finned power steering fluid cooler.
A new RPO Z52 sport handling package combined elements of Z51 with the softer suspension of base models. RPO Z52 included the radiator 16x9.5-inch wheels, faster 13:1 steering ratio, larger front stabalizer bar (except early production), and the convertible-inspired structural improvements for coupes. Z52 was avaialble with coupes or convertibles, automatic or manual transmissions.
The overdrive-engage light was moved from the center-dash area (1984-1986) to an easier-to-view location within the 1987 tach display.
The Callaway Twin-Turbo engine package introduced in 1987 was not a factory-installed option, but could be ordered through participating Chevrolet dealers as RPO B2K. Fully assemebled Corvettes were shipped from the Bowling Green Corvette plant to Callaway Engineering in Old Lyme, Connecticut, for engine and other modifications. The 1987 Callaway had ratings of 345hp and 465 lb.-ft torque, and reached a top speed of 177.9 mpg with .60 overdrive gearing. The first four 1987 Callaways used replacement LF5 (truck) shortblocks, but subsequent cars had reworked production Corvette engines. All 1987 Callaways had manual transmissions and none were certified for California sale. Of 184 twin-turbos built in 1987, 121 were coupes, 63 were convertibles.
Electronic air conditioning control (RPO C68) became an available option for coupes and convertibles in 1987; in 1986, it was coupe-only.
New 1987 convenience options included an illuminated vanity mirror (D74) for the driver's visor, and a passenger-side power seat base (AC1). Twin remote heated mirrors became available for convertibles as RPO DL8. The heated mirrors were included with the heated rear window in the RPO Z6A defogger option for coupes.


1987 Specific RPO #s
RPO #DESCRIPTIONQTYRETAIL $
1YY07Base Corvette Sport Coupe20,007$27,999.00
1YY67Base Corvette Convertible10,62533,172.00
AC1Power Passenger Seat17,124240.00
AC3Power Driver Seat29,561240.00
AQ9Sport Seats, leather14,1191025.00
AR9Base Seats, leather14,579400.00
AU3Power Door Locks29,748190.00
B2KCallaway Twin Turbo (not GM installed)18419,995.00
B4PRadiator Boost Fan7,29175.00
C2LDual Removable ROof Panels (coupe)5,017915.00
24SRemoveable Roof Panel, blue tint (coupe)8,883615.00
64SRemoveable Roof Panel, bronze tint (coupe)5,766615.00
C68Electronic Air Conditioning Control20,875150.00
DL8Twin Remote Heated Mirrors (convertible)6,84035.00
D74Illuminated Driver Vanity Mirror14,99258.00
D84Two-Tone Paint (for coupe)1,361428.00
FG3Delco-Bilstein Shock Absorbers1,957189.00
G92Performance Axle Ratio, 3.07:17,28522.00
KC4Engine Oil Cooler6,679110.00
K43Cruise Control29,594185.00
MM44-Speed Manual Transmission4,2290.00
NN5California Emission Requirements5,42399.00
UL5Radio Delete247-256.00
UM6AM-FM Stereo, Cassette2,182132.00
UU8Stereo System, Delco-Bose27,721905.00
V01Heavy-Duty Radiator7,87140.00
Z51Performance Handling Package (coupe)1,596795.00
Z52Sport Handling Package12,662470.00
Z6ARear Window+Side Mirror Defog (coupe)19,043165.00

A 350ci, 240hp engine, 4-speed automatic transmission, removable body-color roof panel (coupe) or soft top (convertible), and cloth seats were included in the base price.

RPO Z51 included B4P, FG3, KC4, V01, 16x9.5-inch wheels, heavy-duty suspension, fast steering ratio. Coupes and manual transmissions only.

RPO B2K generated a specific equipment build with standard engines at the Corvette assembly plant. The cars were then sent to Callaway's Connectiticut shop for installation of Callaway-modified twin-turbo engines.

1987 Colors
CODE EXTERIOR QTY SOFT-TOP INTERIORS
13 Silver Metallic 767 Bk-W Gr-Mg
18 Medium Gray Metallic 1,035 Bk-W Gr-Mg-R
20 Medium Blue Metallic 2,677 Bk-W B-Gr
35 Yellow 1,051 Bk-W Gr
40 White 3,097 Bk-S-W B-Br-Gr-Mg-R-S
41 Black 5,101 Bk-S-W Gr-Mg-R-S
53 Gold Metallic 397 Bk-S Gr-S
59 Silver Beige Metallic 950 Bk Br-Gr
66 Copper Metallic 87 Bk-S Gr-S
69 Medium Brown Metallic 245 S Br-S
74 Dark Red Metallic 5,578 Bk-S-W Gr-S
81 Bright Red 8,285 Bk-S-W Gr-R-S
13/18 Silver/Gray 403 none Gr-Mg-R
18/41 Gray/Black 316 none Gr-Mg
40/13 White/Silver 195 none Gr-Mg
59/69 Silver Beige/Medium Brown 447 none Br
Suggested interiors shown. Other combinations were possible.

Restrictions applied to some soft top and interior color combinations.

Interior Codes: 12C=Gr/C, 122=Gr/L, 15C=Mh/C, 152=Mg/L, 21C=B/C, 212=B/L, 62C=S/C, 622=S/L, 65C=Br/C, 652=Br/L, 732=R/L.

Abbreviations: B=Blue, Bk=Black, Br=Bronze, C=Cloth, Gr=Graphite, L=Leather, Mg=Medium Gray, R=Red, S=Saddle, W=White