Join Date: Apr 1999
Feedback Score: 0 reviews
Re: 3408 Cat
The 3408, had two versions, in the 70's it was a precup IDI engine, then they turned them into DI engines both obviously came with mechanical injection pumps. Later they were made HEUI engines like our PSD's. I don't think Cat offers the 3408 in Construction equipment anymore, The D9T, 631/637G, and the other machines that used it, have inline 6's in them now. The C18 I believe. The old IDI 3408's had an awesome mean sounding exhaust note to them. If you ever see a CAT 631D or 637D scraper running, you should listen to the exhaust sound sometime, they have the IDI 3408 in them. [img]/ubbthreads/images/graemlins/smokin.gif[/img]
Mack had two V8's back in the day, one was a small V8 made in the 70's not really know for being a great engine, and the other was the E9. It was/is 998 ci, first introduced as a 400 hp in the early 80's I believe, then a 450, and then a 500hp in 1985. Which was the big kitty of its day, cat was still at 425, and I think Cummins just introduced the "lowflow" 444. They were offered in Mack over the road trucks until 1998 I think, then Mack took them out of truck because of emissions. The engine was still basically all mechanical injection. I was told they are in some of the older Military tanks two of them a 750hp each. It was a what i feel a good engine, but it had weak head gaskets, if you had one cranked up it would blow the gaskets, if you weren’t careful. We have one in a 88 Superliner, and the superliner with a stock pump setting will walk all over our 500 cummins, and both 550 cats. Never had a chance to run against a 600 before...but I'd think the 600 would take it. Fuel use was'nt to bad, it would burn the same amount as the 550's with similar loads 115k to 120k, if I ran with them, if I wanted make a point and pass them on the hills, then it was noticed at the pump when we'd refuel. [img]/ubbthreads/images/graemlins/grin.gif[/img]
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