Please help!!

Gilly45327

Recruit
Joined
Aug 2, 2010
Messages
3
I have a Chrylser 55hp with the altenator. The model number on the plate inside the houseing at the front says 557HE and the serail is 3393 I can not seem to get any straight info on what year this is so that I can put in a new set of spark plugs that are the correct ones for this motor. I was told it was a 1979 but from what I see on the internet it could be a 1972 or a 1973 on up to a 1976 depending on what web page you find. Does anyone know for SURE what I might have here? Thank you for any help I can get. OH by the way I have seen gaping on plugs that are supposed to fit this motor at .30 and .40???

PLEASE HELP!
 

rickryder

Commander
Joined
Jun 24, 2010
Messages
2,722
Re: Please help!!

I have a 577HG and its a 1976 HA is 1970 you should have a 74

plugs Champion L4J or NGK equivalent gap .030
 
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