318/392 Stroker Motors

barefoot99
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Posts: 73
Joined: Sun Jul 13, 2014 9:44 pm
Location: Cincinnati OH

Re: 318/392 Stroker Motors

Postby barefoot99 » Wed Jun 10, 2020 9:00 pm

:D :D :D :D :D
Trowerpower wrote:Blue Sky back in the water, port engine repaired. Mechanic ran it she turned 4100 rpm with throttle left, not sure on the speed. New bottom paint and the 4 blade props installed. She is pretty stripped presently. Give me few days to sort out minor issues and will post engine rpm/speed numbers.
SUP !
1982 32 Sedan FB
2072 hrs
360's(rebuilt)-Edelbrocks, DUI
Raw water cooled
Norris Lake
Speedwell,TN.

Trowerpower
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Joined: Sun Dec 07, 2014 8:50 pm
Location: Northern Kentucky

Re: 318/392 Stroker Motors

Postby Trowerpower » Thu Jun 25, 2020 3:47 pm

So full of water, eisenglass, full of fuel, curtains all the stuff 26mph at 4,000 rpm. Clean bottom.
Trower Power
1987 32ft Marinette Sedan Flybridge
Blue Sky
twin 392 Chrysler Stroker Motors
Performance Distributors
750 Edlebrocks
fresh water cooled
1.5 to 1 velva-drives
Onan 6.5kw gen set

Trowerpower
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Posts: 168
Joined: Sun Dec 07, 2014 8:50 pm
Location: Northern Kentucky

Re: 318/392 Stroker Motors

Postby Trowerpower » Fri Jun 26, 2020 8:43 am

1600rpm 10mph, 3,000rpm 20mph.
Trower Power
1987 32ft Marinette Sedan Flybridge
Blue Sky
twin 392 Chrysler Stroker Motors
Performance Distributors
750 Edlebrocks
fresh water cooled
1.5 to 1 velva-drives
Onan 6.5kw gen set

Fastjeff
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Location: Rock Halll, MD
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Re: 318/392 Stroker Motors

Postby Fastjeff » Fri Jun 26, 2020 12:15 pm

Sounds to me that you need a lot more prop! My 32 footer did 20 mph at 2,500 rpm (and still leapt out of the water).

More prop equals better mpg and less engine wear.

Jeff
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington

pbaker32s
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Posts: 16
Joined: Fri Aug 22, 2014 10:30 am

Re: 318/392 Stroker Motors

Postby pbaker32s » Sun Jul 05, 2020 5:54 pm

What props are you using ? I have 16x16 3 blades as came factory. I can never remember the speeds /rpm‘s so I took some pictures this weekend . 7 people aboard full tanks top on.
I have seen 34 mph. Around 4200 rpm’s
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Trowerpower
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Posts: 168
Joined: Sun Dec 07, 2014 8:50 pm
Location: Northern Kentucky

Re: 318/392 Stroker Motors

Postby Trowerpower » Tue Jul 21, 2020 3:10 am

Presently 15 x 14.25 four blade props. I believe it is under propped slightly. I am having the original props reconditioned. I still working with Delta Propeller for a different set.
Trower Power
1987 32ft Marinette Sedan Flybridge
Blue Sky
twin 392 Chrysler Stroker Motors
Performance Distributors
750 Edlebrocks
fresh water cooled
1.5 to 1 velva-drives
Onan 6.5kw gen set

Fastjeff
Site Admin
Posts: 1288
Joined: Sat Jul 12, 2014 5:06 am
Location: Rock Halll, MD
Contact:

Re: 318/392 Stroker Motors

Postby Fastjeff » Tue Jul 21, 2020 7:27 am

Whoa! You're way under propped. My stock 360s (32 footer) were happy with 17 x 15 4 bladers.

More power means lots better gas mileage and less engine wear as well. The boat still rocked out of the water with them, turning 3,900 rpm WOT.

Jeff
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington