1985 Camaro Engine Tune-Up Specifications

1985 Engine Tune-Up Specifications

RPO
(Engine Code)

Cyls-CID (Liters)

Spark Plug Type(1)

Spark Plug Gap (Inch) Ignition Timing Fuel Pressure (psi)(2)

Idle Speed(3)

MT AT MT AT
LG4 (H)

8-305 (5.0L)

R45TS 0.045 6B 6B 4-6.5 750 550
L69 (G)

8-305 (5.0L)

R45TS 0.045 6B 6B 4-6.5 750 500
LB9 (F)

8-305 (5.0L)

R43TS 0.045 - 8B 40-47 - 500

Firing Order: 1-8-4-3-6-5-7-2

NOTE: Under hood sticker figures must be used if different from this chart.

(1) AC Delco noted or equivalent
(2) Key on, engine off.  
(3) Or Minimum Air; RPM w/ engine in Neutral (MT) or Park (AT) warmed to operating temperature; follow proper procedures in setting.

MT=Manual Transmission; AT=Automatic Transmission; psi=Pounds per Square Inch

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