540 Torque Monster

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06-18-2007 | 11:57 AM

CB-BLR

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Chris

Joined: Sep 2005

Posts: 1,426

Likes: 1

From: Snohomish, WA

540 Torque Monster

How about this for a boat motor.

http://www.smedingperformance.com/540extreme.htm

Chris

06-18-2007 | 12:03 PM

t500hps

21 and 42 footers

Joined: Sep 2004

Posts: 8,207

Likes: 146

From: Richmond VA

Built 540's this winter. Precision Marine dyno'ed one with ALL accesories turning and my wet CMI's on the machine.....made 628HP and 699TQ at 4,300!!!

06-18-2007 | 01:06 PM

CB-BLR

Thread Starter

Chris

Joined: Sep 2005

Posts: 1,426

Likes: 1

From: Snohomish, WA

Looks like very happy motors to me!

Chris

06-18-2007 | 08:53 PM

Bob280Silencer

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Joined: Oct 2002

Posts: 983

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From: New Orleans,La.

t500hps,Mark dynoed mine too.Very close,638 hp @5400,677 tq at 3900.Very happy with it. BOB

06-18-2007 | 10:00 PM

t500hps

21 and 42 footers

Joined: Sep 2004

Posts: 8,207

Likes: 146

From: Richmond VA

Quote:

Originally Posted by Bob280Silencer

t500hps,Mark dynoed mine too.Very close,638 hp @5400,677 tq at 3900.Very happy with it. BOB

You were a little closer....I made him earn his money and was happy with the way he handled everything. We kept the EFI system which apparently holds me back a bit but burns less fuel. Now I just need to get props/setup dialed in!!!

06-18-2007 | 10:42 PM

CB-BLR

Thread Starter

Chris

Joined: Sep 2005

Posts: 1,426

Likes: 1

From: Snohomish, WA

What are you guy's basic buildup?

Chris

06-19-2007 | 05:52 AM

t500hps

21 and 42 footers

Joined: Sep 2004

Posts: 8,207

Likes: 146

From: Richmond VA

Started with a 500EFI. Bored/stroked to 540. ported Iron Eagle heads, custom cam (slightly more "aggresive" than the 741), monoblade throttle body/ported plenum, larger fuel injectors, 9,7 compression (93 octane fuel)

630 HP, 700 TQ fully dressed!!!!