1990 420 DA Transmissions

B BARKER

Active Member
Apr 20, 2014
233
TENNESSEE RIVER- CLIFTON,TN
Boat Info
1974 CENTURY ARABIAN 454 CRUSADER MARINE V-DRIVE.. ALSO 1987 SEA RAY 390 EXPRESS CRUISER..
Engines
454 MERCRUISER 340 INBOARDS
Does anyone know what transmissions were in a 1990 420 behind 3208-375 HP engines and were there any options ?
 
Hello B Barker.

The only way I know to find out for sure is to find the plate on the transmissions. If I had to guess (and this is a SWAG at best) probably some flavor of a Hurth HSW800. Usually the tag is on top that has the model and gear ratios stamped in. It might be blue.
 
Last edited:
Hello B Barker.

The only way I know to find out for sure is to find the plate on the transmissions. If I had to guess (and this is a SWAG at best) probably some flavor of a Hurth HSW800. Usually the tag is on top that has the model and gear rations stamped in. It might be blue.
I had one for about 10 years. Same year. Had ZF tranny and Vdrive. Never saw anything but that in any of the ones I had seen.
 
I have the same boat and engine configuration, you you should have ZF/MPM IRM-301 P1 transmissions with a MPM V 160-M V drive
I just scanned the owner / maintenance manuals yesterday, if you want a PDF copy- send me a note and I'll email them to you
transmission.jpg
v drive.jpg
 
scottyg.... Thanks a lot thats exactly what it has in it I got the numbers saturday a week ago and was going to post it but I got side tracked...I would appreciate the pdf
 
@ B Barker do you have those PDF's from Scottyg? I could really use them for some issues im having with my 1991 420
 

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