WooT!! Dyno Numbers
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From: Shasta Lake, Ca.
WooT!! Dyno Numbers
Well today been fun, I got my 72 on a rear wheel dyno and Im very happy with the numbers
355hp @ 3100 RPM
612FPT @ 2900 RPM
This is from a lightly modded 427 marine engine in my 72 F-100
427 bored 10 over Decked 10, Stock Marine Cam, re-chromed Cyl walls Hi-Val Oil Pump, Oil Cooler, Reserved External Oil tank hold 5 Qts, 2 Oil Filter, OEM 4bbl Marine Intake, Edelbrock street 600 cfm carb with a 1in spacer. 180 thermostat. C6 with a B&M Towing Shift Kit, 9in rear end with 4.11 gears with a Welded diff ( Home made locker ), and 31x10.5x15 Tires.
While this isnt the most powerful, the Toque is what I was after for towing Boats and Horses.
355hp @ 3100 RPM
612FPT @ 2900 RPM
This is from a lightly modded 427 marine engine in my 72 F-100
427 bored 10 over Decked 10, Stock Marine Cam, re-chromed Cyl walls Hi-Val Oil Pump, Oil Cooler, Reserved External Oil tank hold 5 Qts, 2 Oil Filter, OEM 4bbl Marine Intake, Edelbrock street 600 cfm carb with a 1in spacer. 180 thermostat. C6 with a B&M Towing Shift Kit, 9in rear end with 4.11 gears with a Welded diff ( Home made locker ), and 31x10.5x15 Tires.
While this isnt the most powerful, the Toque is what I was after for towing Boats and Horses.
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Joined: Jun 2009
Posts: 415
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From: Bearspaw Alberta Canada
Awesome numbers...but I'm always interested in the story... where'd you find a marine 427, what is the difference compared to a "normal or standard" 427, whatever that means? compared to a 428 what did the rebuild cost you? i'm looking for for 428 for my crewcab but i've been told don't go for a cj or scj, why not? If I find a marine 427 or any other 427 should I go for it? Why or why not? What where your challenges building a marine 427, would you do it again?
Rab
Rab
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From: Shasta Lake, Ca.
I work on Boats for a living first off. I brought a Chris Craft that had 2 of the 427 in it from salvage. It came off a trailer going down the high way, destroyed the hull. The Marine block is about 100lbs heaver, Has Chromed Cyl wall. Is a true 4 bolt, Not the cross bolt like the cars/trucks. and the tranny bosses are NOT drilled or tapped. The Cyl walls are much thicker also, Marine engine are designed to work much harder the cars/truck, Unlike cars, Boats dont coast at all, You working the engine all the time. And Since this block is from Chris Craft, they also do a lot of porting and smoothing of the intake runners. All the Ports are matched. If you check In Boards engine in boats, ther Lower HP but much higher torque.
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Joined: Jun 1999
Posts: 24,552
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From: Creedmoor, North Carolina
Well today been fun, I got my 72 on a rear wheel dyno and Im very happy with the numbers
355hp @ 3100 RPM
612FPT @ 2900 RPM
This is from a lightly modded 427 marine engine in my 72 F-100
427 bored 10 over Decked 10, Stock Marine Cam, re-chromed Cyl walls Hi-Val Oil Pump, Oil Cooler, Reserved External Oil tank hold 5 Qts, 2 Oil Filter, OEM 4bbl Marine Intake, Edelbrock street 600 cfm carb with a 1in spacer. 180 thermostat. C6 with a B&M Towing Shift Kit, 9in rear end with 4.11 gears with a Welded diff ( Home made locker ), and 31x10.5x15 Tires.
While this isnt the most powerful, the Toque is what I was after for towing Boats and Horses.
355hp @ 3100 RPM
612FPT @ 2900 RPM
This is from a lightly modded 427 marine engine in my 72 F-100
427 bored 10 over Decked 10, Stock Marine Cam, re-chromed Cyl walls Hi-Val Oil Pump, Oil Cooler, Reserved External Oil tank hold 5 Qts, 2 Oil Filter, OEM 4bbl Marine Intake, Edelbrock street 600 cfm carb with a 1in spacer. 180 thermostat. C6 with a B&M Towing Shift Kit, 9in rear end with 4.11 gears with a Welded diff ( Home made locker ), and 31x10.5x15 Tires.
While this isnt the most powerful, the Toque is what I was after for towing Boats and Horses.
John
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From: Shasta Lake, Ca.
With all the uphill towing, Id rather not abuse it for a few extra mpg, While towing Im stuck at 55mph any way. But It leave me with enough to breeze up 8% grades without any problems at all
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