Raptor 400 VS 450

[larry_arizona]

SC was the last to switch to the 1.76, but it was a nice performance upgrade.


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[MLA]

I don't believe the 1:1.76 tranny is unique to SC. Obviously the raptor 4o0-440 isn't. It would be easier to swap the tranny than to do any mods to the engine, given the ECU restrictions. You should be able to order a new tranny from your dealer, I would think. Just say it failed and you don't want warranty coverage, You're a conscientious objector to the warranty principles!. Since the engine, crankshaft and couplers are all the same, presumably(maybe the couplers are not), it should be a straight forward swap, shouldn't it? Should not have to mess with the ECU, right? It'll be a couple of grand and elbow grease to replace it, but if you're mechanically skilled, anything is doable. Maybe there are issues with the drive shaft for prop lining up though, hmm.

The ratio change is actually in the v-drive portion, so it may be even easier. May just be able to swap gears in the v-drive portion of the drive-train.

[dakota4ce]

Couple grand is probably 5 grand. Knowing the cost of this stuff.


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[MJHSupra]

Couple grand is probably 5 grand. Knowing the cost of this stuff.


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Very true. Couple grand are clamping upper board racks. I'm betting north of 5K.

[larry_arizona]

I searched online for Indmar or ZF v drives and don’t see any for sale, must be a dealer only order.

But I am guessing $3500-$5000 for the 1.76 v drive.


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[rdlangston13]

I searched online for Indmar or ZF v drives and don’t see any for sale, must be a dealer only order.

But I am guessing $3500-$5000 for the 1.76 v drive.


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what about just the cost of the gears? assuming the unit itself is the same

[Isaguel]

what about just the cost of the gears? assuming the unit itself is the same

The gears will be different sizes so I suspect the transmission block that houses the gears will have different size or shape. But, if the gears can just be swapped, that would be game changer. It would be a worthwhile upgrade for anyone with tranny pre-year 2000. My Supra with the 1.176 gear is considerably more capable than my Mojo with the same engine. I thought lndmar had made some tweaks, upgrades or tuning to the 400. But if this is all tranny, it is so worth the money.

[MJHSupra]

The gears will be different sizes so I suspect the transmission block that houses the gears will have different size or shape. But, if the gears can just be swapped, that would be game changer. It would be a worthwhile upgrade for anyone with tranny pre-year 2000. My Supra with the 1.176 gear is considerably more capable than my Mojo with the same engine. I thought lndmar had made some tweaks, upgrades or tuning to the 400. But if this is all tranny, it is so worth the money.

That is what I recall reading about too when someone wrote about the transmission being a 'new unit' vs internal gears. Cannot firm that.

[UNSTUCK]

I went the rounds a couple of years ago with Indmar discussing the difference between the 400 and 440. Internally the motors are identical from 400 to 575. 400 and 440 are exactly the same externally as well. Indmar takes a bone stock 6.2 Ford truck motor and swaps out the oil pan and pump for a lower profile unit on all the motors. That is the only difference from the trucks. No cam changes or any internals on any motor. I need to go back through my emails again, but I believe the 460 has a larger throttle body and exhaust manifolds than 400 and 440. The 450 was not a thing at the time of this conversation.

After back to back 6000 pound ballast tests with a 400 Max and 450 Max two weeks ago, I can tell you there is no seat of the pants difference in the performance and I would not spending any money turning a 400 into a 450 or spending the upgrade money when buying a new Max. If you have the 1.5 ration transmission, this is where I would focus any modifications. In that case I would swap out the 1.5 and go straight to a 2:1 with a 1.25 shaft, support, and prop. That would be a real game changer and cost way less than the 450 upgrade on a new boat.

[MJHSupra]

I went the rounds a couple of years ago with Indmar discussing the difference between the 400 and 440. Internally the motors are identical from 400 to 575. 400 and 440 are exactly the same externally as well. Indmar takes a bone stock 6.2 Ford truck motor and swaps out the oil pan and pump for a lower profile unit on all the motors. That is the only difference from the trucks. No cam changes or any internals on any motor. I need to go back through my emails again, but I believe the 460 has a larger throttle body and exhaust manifolds than 400 and 440. The 450 was not a thing at the time of this conversation.

After back to back 6000 pound ballast tests with a 400 Max and 450 Max two weeks ago, I can tell you there is no seat of the pants difference in the performance and I would not spending any money turning a 400 into a 450 or spending the upgrade money when buying a new Max. If you have the 1.5 ration transmission, this is where I would focus any modifications. In that case I would swap out the 1.5 and go straight to a 2:1 with a 1.25 shaft, support, and prop. That would be a real game changer and cost way less than the 450 upgrade on a new boat.

2:1? Are you saying they should offer that? I think that opens another can-of-worms on the mounting and angles.

The current offering is 450 with the 1.76 trans.