Engine - 18GF, GH, GJ, GK
North America
High Compression
Distributor - 25D4
40897 or 41155
to 1971

 

Degrees

RPM

Dwell

60+-3

 

Static

10

 

Strobe

20

1000

Centrifugal

10

500

24

1625

30

3000

Max Vacuum

20+-2

 

Note: The curve and strobe data differs significantly to the 40897 listed elsewhere in the manual, maybe the 41155 is an alternative for this engine and the figures shown are for that distributor.