ls swap a boat
#2
Were doomed!
Charter Member
you can look here:
starts about the 3min mark
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-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
#4
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The LS is a great engine, but it needs a transmission with at least 1,8:1, preferably 2:1.
Our LS376/480 was lousy with the 1,56:1 transmission as the propeller spins to almost 4,000 rpm and lacks torque, but with the 2:1 transmission it's a completely different story. I wouldn't put it in the boat without at least a 1.8:1 gear option.
Our LS376/480 was lousy with the 1,56:1 transmission as the propeller spins to almost 4,000 rpm and lacks torque, but with the 2:1 transmission it's a completely different story. I wouldn't put it in the boat without at least a 1.8:1 gear option.
#5
Registered
The LS is a great engine, but it needs a transmission with at least 1,8:1, preferably 2:1.
Our LS376/480 was lousy with the 1,56:1 transmission as the propeller spins to almost 4,000 rpm and lacks torque, but with the 2:1 transmission it's a completely different story. I wouldn't put it in the boat without at least a 1.8:1 gear option.
Our LS376/480 was lousy with the 1,56:1 transmission as the propeller spins to almost 4,000 rpm and lacks torque, but with the 2:1 transmission it's a completely different story. I wouldn't put it in the boat without at least a 1.8:1 gear option.
#6
Registered
No, it is installed in a 4,900 lbs speedboat with MSA surface drive. With the ZF63A-1.56, the engine struggled to turn the SL5-22" propeller and would not go over 62 mph-Livorsi GPS. After swapping out the ZF63A-1.56 for the ZF63A-2.04, the engine spins Maximus 30" easily and we've gotten to 65 mph so far. It would go far over, but to small skeg made dangerous ride. We are prolonged skeg and on the spring will go back on the water. My expectations are betwen 67 and 70 mph, hopefully close to the 70 mph.
With transmision 1.56:
With transmision 1.56:
Last edited by plavutka; 09-12-2024 at 02:15 PM.
The following 5 users liked this post by PODUNK RACING:
bajaman (09-15-2024), hogie roll (09-14-2024), resurrected (Yesterday), SB (09-14-2024), Tartilla (09-14-2024)
#8
Registered
The LS is a great engine, but it needs a transmission with at least 1,8:1, preferably 2:1.
Our LS376/480 was lousy with the 1,56:1 transmission as the propeller spins to almost 4,000 rpm and lacks torque, but with the 2:1 transmission it's a completely different story. I wouldn't put it in the boat without at least a 1.8:1 gear option.
Our LS376/480 was lousy with the 1,56:1 transmission as the propeller spins to almost 4,000 rpm and lacks torque, but with the 2:1 transmission it's a completely different story. I wouldn't put it in the boat without at least a 1.8:1 gear option.
My Arnesons are 1.32, with cupped 25 pitch 5 blades. I don't think I would even try to turn them with SBCs or LSs. It does keep the cruise rpm down though...
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tommymonza (09-14-2024)
#9
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tommymonza (09-14-2024)