convert 454 to 525sc
02-09-2009, 02:52 PM
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convert 454 to 525sc
has anybody ever converted a 454 to a 525sc? is this possible, i think the 454 is the base of the 525.
chris
chris
Last edited by chris-jack; 02-10-2009 at 06:12 AM.
02-09-2009, 03:06 PM
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The first question is which 454 is currently in the boat. I'm not a mechanic, but what I understand is if it is a 365, 370, or 420 horsepower motor, it has all the good forged internals, good heads and valves, and can be built to a 525SC.
If it is a plain 454, plan to start from scratch.
If it is a plain 454, plan to start from scratch.
02-09-2009, 03:16 PM
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The first question is which 454 is currently in the boat. I'm not a mechanic, but what I understand is if it is a 365, 370, or 420 horsepower motor, it has all the good forged internals, good heads and valves, and can be built to a 525SC.
If it is a plain 454, plan to start from scratch.
If it is a plain 454, plan to start from scratch.
02-09-2009, 06:43 PM
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What blower did you use? I have heard Wieand 177 and 250 both called the 525sc blowers. Also did you lower you comp. ratio any? I have heard it's lower in the 525sc than any of the others mentioned.
02-09-2009, 10:19 PM
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HP525SC Specifications
Propshaft Horsepower: 490 (365 kw)
Displacement (Liter/CID): 7.4/454
Cylinders: V-8
Bore (in/mm): 4.25/108
Stroke (in/mm): 4.00/102
Compression Ratio: 7.5:1
Fuel Requirements: 92 Posted Octane (R+M)/2
Full Throttle RPM Range: 4800-5200
Ignition Type: Thunderbolt V
Alternator (amps/watts): 55/776
Length (in/mm): 47.625/1210
Width (in/mm): 32.75/832
Height (in/mm): 28/711
Weight (lbs/kg): 1470/667
They make 525 at the motor and 490 at the prop if running a bravo style drive.
Propshaft Horsepower: 490 (365 kw)
Displacement (Liter/CID): 7.4/454
Cylinders: V-8
Bore (in/mm): 4.25/108
Stroke (in/mm): 4.00/102
Compression Ratio: 7.5:1
Fuel Requirements: 92 Posted Octane (R+M)/2
Full Throttle RPM Range: 4800-5200
Ignition Type: Thunderbolt V
Alternator (amps/watts): 55/776
Length (in/mm): 47.625/1210
Width (in/mm): 32.75/832
Height (in/mm): 28/711
Weight (lbs/kg): 1470/667
They make 525 at the motor and 490 at the prop if running a bravo style drive.
