mackdaddytruckfixer Posted 4 hours ago Author Share Posted 4 hours ago 5 hours ago, Geoff Weeks said: There is a huge difference between what can be done with a mechanical engine and what can be done with electronics. You said you want a mechanical controlled engine, that limits what can be safely made in terms of power. At best mechanical can only have a speed based timing. That alone limits what can be done. Same on boost control. it would be a fixed map. If he wants that kind of power, then start with that powerplant. The hard work has been done, but there again it is not mechanical. Adding 10% to that would likely hold together, but may not. It wouldn't be the 1st powerplant that was discontinued/down rated after they came out when it was found they couldn't stay together long term. I stand by the comment that 11L mechanical engine @500 hp is not realistic, esp with your other requirements, of 500k to overhaul, and not being "babysat". The only fully mechanical truck engine to break 500 hp from the factory was the K-19 Cummins AFAIK. a 19L engine. Many did so when electronic controls and the items that are controlled were developed. All this to pull a "regional end dump" around? I pulled double your weight and much more wind resistance with ~430 hp. If you want an engine of any size that you can mash the go pedal and not watch the gauges, and I'm not sure there are any that fit that requirement, then it will a stock engine. drop in a 460 and play with that. Im driving a X15 Pete atm i really like the power Quote Link to comment https://www.bigmacktrucks.com/topic/76250-e7-350hp-to-500hp-that-will-live/page/2/#findComment-587591 Share on other sites More sharing options...
Geoff Weeks Posted 3 hours ago Share Posted 3 hours ago (edited) 1 hour ago, mackdaddytruckfixer said: Im driving a X15 Pete atm i really like the power Then drop the "mechanical" ( and 11L ) requirement and choose one of the fine electronics already made at that power and drop (stuff?) it in. As I stated any two are possible, not all three. Edited 2 hours ago by Geoff Weeks Quote Link to comment https://www.bigmacktrucks.com/topic/76250-e7-350hp-to-500hp-that-will-live/page/2/#findComment-587594 Share on other sites More sharing options...
mackdaddytruckfixer Posted 2 hours ago Author Share Posted 2 hours ago 21 hours ago, Joey Mack said: Its 11 liters.. it wont live... E6 is 11 liters E7 is 12 liters. Mack built a 454hp mechanical engine i can't see getting another 50hp with some aftermarket mods being a issue maybe im wrong. Quote Link to comment https://www.bigmacktrucks.com/topic/76250-e7-350hp-to-500hp-that-will-live/page/2/#findComment-587597 Share on other sites More sharing options...
mackdaddytruckfixer Posted 2 hours ago Author Share Posted 2 hours ago 43 minutes ago, Geoff Weeks said: Then drop the "mechanical" ( and 11L ) requirement and choose one of the fine electronics already made at that power and drop (stuff?) it in. As I stated any two are possible, not all three. Im probably going to have to leave Mack behind. Ive ran them for 30 years. They killed our hero truck aka Superliner and 2 chances to be the industry leader in power. E9 and MP10 were both killed off. Quote Link to comment https://www.bigmacktrucks.com/topic/76250-e7-350hp-to-500hp-that-will-live/page/2/#findComment-587598 Share on other sites More sharing options...
Joey Mack Posted 2 hours ago Share Posted 2 hours ago Yes E-7 is 12 liters. I dont know how i thought it was an E-6. The title clearly says E-7 Quote Link to comment https://www.bigmacktrucks.com/topic/76250-e7-350hp-to-500hp-that-will-live/page/2/#findComment-587599 Share on other sites More sharing options...
Geoff Weeks Posted 1 hour ago Share Posted 1 hour ago 51 minutes ago, Joey Mack said: Yes E-7 is 12 liters. I dont know how i thought it was an E-6. The title clearly says E-7 Oh, Jojo, you led me wrong LOL. I don't know all the Mack engines like you. I still say 500hp out of a mechanical inline six below 14L is going to take some compromise in the lifespan. Even at 14L it is going to be a stretch. Electronic sure changed that equation. Quote Link to comment https://www.bigmacktrucks.com/topic/76250-e7-350hp-to-500hp-that-will-live/page/2/#findComment-587606 Share on other sites More sharing options...
BottleHauler84 Posted 1 hour ago Share Posted 1 hour ago 1 hour ago, mackdaddytruckfixer said: Im probably going to have to leave Mack behind. Ive ran them for 30 years. They killed our hero truck aka Superliner and 2 chances to be the industry leader in power. E9 and MP10 were both killed off. Thats something I have not investigated, but anyone know the reason they dropped the MP10? I heard they had some issues, but like any new platform, its bound to happen and it can be addressed and re engineered as time goes on. Im curious why they decided to can the MP10. Quote Link to comment https://www.bigmacktrucks.com/topic/76250-e7-350hp-to-500hp-that-will-live/page/2/#findComment-587607 Share on other sites More sharing options...
Joey Mack Posted 1 hour ago Share Posted 1 hour ago Honestly GW.. i have very little knowledge on upping horsepower in an E-6 or E-7. I do believe ( much to my shagrin) ... Electronics plays a big part in making the HP and protecting the engine as well. The 460 XT i mentioned is an E-Tech.. the next engine after the E-7. It is still 728 c.i.d./12 liters. The more I read this thread, the more I am leaning towards a 500 HP runner.. I guess i get sidetracked when I see guys wanting to put more power in an engine that is already very reliable, so my kneejerk reaction is to say NO!. Quote Link to comment https://www.bigmacktrucks.com/topic/76250-e7-350hp-to-500hp-that-will-live/page/2/#findComment-587611 Share on other sites More sharing options...
Geoff Weeks Posted 43 minutes ago Share Posted 43 minutes ago It was the "mechanical" aspect that makes me say no. Quote Link to comment https://www.bigmacktrucks.com/topic/76250-e7-350hp-to-500hp-that-will-live/page/2/#findComment-587614 Share on other sites More sharing options...
Joey Mack Posted 40 minutes ago Share Posted 40 minutes ago Yes sir.. I understood your points. Food for my thoughts. Well, I wish him success. I think i will , back out now and just watch... Quote Link to comment https://www.bigmacktrucks.com/topic/76250-e7-350hp-to-500hp-that-will-live/page/2/#findComment-587615 Share on other sites More sharing options...
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