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CHECKER MOTORS

 

1968-74 Tune-up Specifications

 
Year Engine Car Model Spark Plug Gap Point Gap Dwell Angle Firing Order Ignition Timing (BTDC or Mark Valve Lash
Intake Exhaust
1968 6-230
Std tran
.035
1
31-34 153624 TDC - -
6-230
Auto tran
.035
1
31-34 153624 - -
8-307 .035
1
28-32 18436572 - -
8-327 .035
1
28-32 18436572 - -
8-327
2
.035
1
28-32 18436572 - -
1969 6-250
Std tran
.035
1
31-34 153624 TDC - -
6-250
Auto tran
.035
1
31-34 153624 - -
8-327
Std tran
.035
1
28-32 18436572 2° ATC - -
8-327
Auto tran
.035
1
28-32 18436572 - -
8-350
215hp
.035
1
28-32 18436572 - -
8-350
300hp
.035
1
28-32 18436572 - -
1970 6-250 .035
1
31-34 153624 - -
8-350 .035
1
28-32 18436572 - -
1971 6-250 .035
1
31-34 153624 - -
8-350
3
.035
1
29-31 18436572 - -
8-350
2
.035
1
29-31 18436572 - -
1972 6-250 .035
1
31-34 153624 - -
8-350
3
.035
1
29-31 18436572 - -
8-350
2
.035
1
29-31 18436572 - -
1973 6-250 .035
1
31-34 153624 - -
8-350
3
.035
1
29-31 18436572 - -
8-350
2
.035
1
29-31 18436572 12° - -
1974 6-250 .035
1
31-34 153624 - -
8-350 .035
1
29-31 18436572 - -
 

1 - New .019, used .016. On V8 Turn adjusting screw clockwise until engine begins to misfire, then back off 1/2 turn.

2- Aerobus

3- Marathon & taxi

- Hydraulic lifters