TRS/ Trans years?
#1
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TRS/ Trans years?
Does anyone know what years that Mercruiser used the MerCtrans II and what years were the B/W trans used? The reason why I ask is my engine is a 420 HP 454, which from what I understand was produced 87-89. The trans that I have is the MerCtrans II. And from what I can gather, Mercruiser went from the Mer trans to the B/W before 87. The boat is a 78. So is this the correct trans for this year model engine? The only serial # that I have found is on the top of the bell housing. The serial # is 0014128, model # MOM-E.
Thanks
Thanks
#2
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Re: TRS/ Trans years?
MerCtrans was used by Merc. mostly with small block Chevs. and 330 HP big blocks through the late 70's and into the early 80's. I have never seen the factory package that Cyclone 420 with the MerCtrans. (although I can't swear that it NEVER happened) My guess is that the transmission is probably what came with the boat but the engine was upgraded somewhere along the line. --- Jer
#3
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Re: TRS/ Trans years?
I am with JP on this one. Your engines were upgraded at some point.....
Jon
Jon
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#4
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Re: TRS/ Trans years?
this is kind of informal but i've never seen anything above a 330 trs that came originally rigged with a merctrans; all staggered installations and 370 cyclones and above were borg warner
good luck
jeff
good luck
jeff
#6
Re: TRS/ Trans years?
Repowered a 38 Scarab 1982 boat, had the merctrans. Also Bought a 1983 454 trs motor with trans and it was a borg. It's my belief that all '83 and up were Borg's . BBB
#10
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Re: TRS/ Trans years?
Once again, I believe JP is correct. The MercTrans was offered on the 280hp small block and 330hp 454.
370HP and up were mated to the Borg Warner 71 and 72 series trannies.
370HP and up were mated to the Borg Warner 71 and 72 series trannies.