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I think Gimpy broke a crank.

The info should cover all the brands as they are the exact same engine.

35 pages and still we don't have a definitive answer on the differences in the two engines. I'm of the opinion that if you need a engine and a LDS comes along for a good price, go for it. Would a pull a perfectly good LDT and buy a high priced LDS to replace it with, no. If your LDT is...

You may be right about the -2. I still wouldn't be surprised if a deuce came from the military with a LDS-456-2 but as you said, it would probably be rare.

I'm not real sure that what you're saying will work. You cannot turn up the point that the IP defuels without increasing max rpm. The pump defueling is what determines max rpm. The only factor that controls max rpm is the IP fuel rate which is controlled by the governor. In other words, the...

They are found in some M35a2s coming right from the government. Now I don't think any deuces came from the factory with a LDS-465 but some have been repowered with them by the military. I've seen a few come through GL.

Looks like this engine is about maxed out as far as EGT is concerned.

I've always contended that the best way to get higher HP out of these engines would be to lower the compression. You'd loose your multifuel capability though. The high compression generates a lot of heat and puts more strain on the lower end.

The multifuel breathes fine. You have more than enough fuel and air available to melt down the rest of the engine. The main obstacles with increasing hp in a multifuel is heat melting the pistons and the weak bottom end. I agree with everything except adding a turbo will help the engine run...

While that may work for pullers or drag racers, it won't work for a driving truck. It will overheat. The block isn't really a problem anyway. I know some of the pullers are having problems with the blocks but they are more than likely heavily modded engines. The main problem with getting more...

Travis, You may be onto something. Somebody give me a LDS IP and a set of injectors and I'll try it out ;). Seriously though, I wish somebody would try this and post the results.

I'm still not buying the whole IP/injector deal on the LDS. I know they're different but can they really make that much more power? You can melt down a LDT with the factory fuel pump and injectors. If the LDS IP and injectors deliver that much more fuel, what keeps the LDS from melting down...

I think the theory behind the oil groove is to help keep piston temps a little lower (more fuel equals more heat). The way I see it is the injection pump is a moot point. You can turn up a LDT IP up more than enough to melt the engine so I don't see how you'd gain hp with a LDS IP. I could...