1970 Chevelle Build Sheet

Atlanta, Georgia ~ Section 3 - 25 through 42

Section 3

Box 25: MODEL
The 5-digit Fisher Body style number such as 13637 for a Malibu sport coupe.

Box 26: TOP
If the car had a vinyl top, its color is listed here with a 3-letter code such as BLK on this example with a black vinyl top. Other color are listed as BLU, GLD, GRN, and WHT. No Atlanta convertible build sheets have surfaced to date. If no vinyl top the box will have 3 hyphen characters ( --- ).

Box 27: ENG
A 2-letter code for the engine ID is listed here such as RV which is correct for an LS6 with manual transmission. This should match the engine type (L34/L78/LS5/LS6) and transmission type (manual/automatic) shown in box 107 in section 8.

Box 28: TRANS.
A 2-letter code for the transmission type is listed here and should match the transmission type shown in box 107 in section 8.
WO - M22 manual transmission
WL - M21 manual transmission
WB - M20 manual transmission
CY - LS6 M40
CS - LS5 M40
CF - L34 M40

Box 29: AXLE
A 2-letter code for the rear end ratio and positraction (or open) is listed here and should match the axle RPO code and positraction RPO code (or lack of) in box 107 in section 8. This will vary depending on the engine option as the LS5 and LS6 rear ends were considered heavy duty.

Box 30: ALTER
A 2-letter code for the alternator and will vary depending on the output capacity needed for the particular car.
NF - L34/LS5 w/air conditioning
NJ - RPO K85 63 AMP GENERATOR
CW - L34/LS5 w/o air conditioning
CZ - LS6

Box 31: ALTER PULLEY
Three hyphens ( --- ) are listed whether air conditioning was installed or not.

Box 32: START MOTOR
A 3-digit number is listed and is dependent on the transmission type.
418 - manual transmission
430 - M40 transmission

Box 33: FUEL PUMP
A 3-digit number is listed as is dependent on the engine size.
727 - L78 & LS6 through at least March 25, 1970
768 - All L34 & LS5, and LS6 as of March 31

Box 34: POWER STRG PULLEY
Without power steering two hyphens (--) are listed.
CE - L34 & LS5 with power steering, without air conditioning
DE - L34 & LS5 with power steering, with air conditioning
DD - L78 & LS6 with power steering

Box 35: CRANK PULLEY
A 2-letter code is listed here and is dependent on whether power steering and/or air conditioning was ordered.
AA - 1 groove - L34 & LS5 without power steering and without air conditioning
AB - 2 groove - L78 & LS6 with or without power steering
AC - 3 groove - L34 & LS5 power steering and/or air conditioning
AD - 2 groove - L34 & LS5 power steering

Box 36: V BELT GROOVE 1 *
A 2-letter code is listed here for the alternator belt and is dependent on power steering and/or air conditioning options.
AE - L34 & LS5 without power steering or air conditioning
HJ - LS6 with power steering (Possible with L78 as well but no examples)
HL - L34 & LS5 with power steering and air conditioning (one L34 example found with HL but NO power steering)
KB - L34 without power steering or air conditioning (Two examples on April 16 only with AA crank pulley)
TR - L34 & LS5 with power steering only
UZ - L78 with power steering
YE - LS6 without power steering

Box 37: V BELT GROOVE 2 *
A 2-letter code is listed here for the power steering belt. If power steering was not ordered the box contains 2 hyphens (--).
-- - no power steering
AE - L34 & LS5 without air conditioning (up through at least March 13)
KE - L34 without air conditioning (after at least April 16 - possibly applicable to LS5 as well but no examples)
TR - L34 & LS5 with air conditioning
YE - LS6

Box 38: V BELT GROOVE 3 *
A 2-letter code is listed here for the air conditioning belt. If air conditioning was not ordered the box contains 2 equal symbols (==). Power steering is not a factor.
== - no air conditioning
AE - L34 & LS5

Box 39: V BELT GROOVE 4 *
A 2-letter code is listed here. Regardless of engine size or various combinations of power steering and/or air conditioning.
BH - L34 & LS5
BG - L78 & LS6 with and without power steering

Box 40: AIR PUMP & PLUG
Either TCS-2 or TCS-3 is found in this box. To date, there seems to be no discerning reason or combinations of options for the difference between the two units.
TCS-2 - L34, L78, LS5, & LS6 without U14 gauges
TCS-3 - L34, L78, LS5, & LS6 with U14 gauges

Box 41: AIR PULLEY
A 3-character code is listed here.
AIR - L78 & LS6
CCS - LS5 engine
L34 - L34 engine

Box 42: FUEL GAUGE
A 2-character code is listed here.
C1 - L78 & LS6 through at least March 25
C2 - L34 & LS5 through at least March 25
P2 - L34, LS5, & LS6 after at least March 30

* Belt routing:
1 - Alternator
2 - Power Steering Pump
3 - Air Conditioning
4 - A.I.R. Pump