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View Full Version : Boat Crank Interchangable?

ElGatoNegro
03-19-2008, 05:39 PM
I have 2 409's out of a boat. Is the crank shaft different between car and boat blocks?
quik9r
03-19-2008, 10:43 PM
Do you know if one of the motors is reverse rotation?

kevin
jim_ss409
03-19-2008, 11:35 PM
I think most marine engines are pretty much the same as truck engines, so the cranks should be the same. If the engines came out of a boat with twin engines the one from the right side is probably set up to run backwards. I know for sure the cam is different and possibly the distributor but pretty much everything else should be the same.
rstreet
03-19-2008, 11:41 PM
I think most marine engines are pretty much the same as truck engines, so the cranks should be the same. If the engines came out of a boat with twin engines the one from the right side is probably set up to run backwards. I know for sure the cam is different and possibly the distributor but pretty much everything else should be the same.
Jim: You're correct on the marine conversions. I have an old Crusader 409 conversion but I have an odd-ball "correct" rotation one.:rofl :rofl
robert
Boat
03-20-2008, 02:04 PM
I don't know about the cranks...

there are two possibilities, either it was a marine version...I'm told close to a truck motor...or it came out of a car like mine. I'd check the casting #s to make sure which it is.
ElGatoNegro
03-20-2008, 04:27 PM
the casting number is an "814" which is 63 car only correct? but it has the relief cut into the cylinders like a truck would have. Not sure on the rotation of the one i have torn appart
ElGatoNegro
03-20-2008, 04:29 PM
and the valve covers said "pacemaker 280 marine"
BROOKLYNSS409
03-20-2008, 04:55 PM
do they have brass oil pans?
Boat
03-20-2008, 05:06 PM
Do the valve covers look cool? I'm putting a car motor in my boat...maybe an arrangement could be made?
jim_ss409
03-20-2008, 05:08 PM
the casting number is an "814" which is 63 car only correct? but it has the relief cut into the cylinders like a truck would have. Not sure on the rotation of the one i have torn appart

814 blocks were also used for truck engines.
ElGatoNegro
03-20-2008, 06:03 PM
the oil pan was aluminum, basically a square box,
and the valve covers were just stamped steel like the original, only with a sticker that said pacemaker 280.

Also, the drive was hooked up off of the Front on the engine, which i couldn't believe.
Boat
03-20-2008, 06:34 PM
Wanna get rid of the oil pan?

If it's driven off the snout then it was in a V drive. Circle boat always turn left and running it off the snout makes the motor run as in a car, but spin counter clockwise and makes a left turn easier.

I have stamped valve covers...I was thinking about Mooneyes anyway.
ElGatoNegro
03-20-2008, 10:02 PM
Wanna get rid of the oil pan?

If it's driven off the snout then it was in a V drive. Circle boat always turn left and running it off the snout makes the motor run as in a car, but spin counter clockwise and makes a left turn easier.

I have stamped valve covers...I was thinking about Mooneyes anyway.

so if it is driven off the front, its rotation is the same as a car? How much is the pan worth to you? (i also have the whole set-up from the boat if interested.) (PM me)
rstreet
03-21-2008, 12:21 AM
Mine has Crusader 280 on the covers(Crusader Marine Conversion) and is an 814
robert

Does anyone have a Daytona Marine conversion as those were the "tricked" conversions to produce more power??