One truck that I was looking a, a 1996, had 280000 km on the clock, and I was curious about how well these trucks hold up to large amounts of km like that.
I thought the same thing, 8.1 swap, but I think the 454 has a bit of potential with a few changes.All times are GMT-8.

Remember, 6k lb. In a mild form these things should be good for 350 horspower and 450 ft/lbs right?Does anybody know the dirt on the Vortec 454 engines? The Vortec 8100 isn’t super impressive in stock trim, but it’s designed for heavy duty work. You Must have headers. And I don't care what your compession is, if you're gonna pound on it, you better have at least some premium fuel in it. I like big blocks. Have I tied your hands enough?
Does anybody know the dirt on the Vortec 454 engines? Like I said earlier, standard big block parts won’t fit on the Vortec 8100, so the performance parts available for it are close to none. Stock stuff seems to hold up great.2015 Reg cab, 2wd, 5.3l, On3 single turbo, E85 conversion, 4.10 rear gear, and HP Tuner software.I' think I've only replaced just the chain once on a stock engine because it had over 300k and the timing was all over the place. The 7400 Vortec V-8 GM engine has 454-cubic inches and was rated at 290 horsepower at 4,000 rpm. ---------------------------------------------------------- - 2007 Silverado Classic 4x4 Extended Cab 5.3l - Black Bear Performance ... SilveradoSierra.com - Chevy Truck Forum | Silverado Sierra GMC Truck Forums The only site focused on Silverado/Sierra trucks exclusively. Other versions of the Vortec 8100 make as much as 550 horsepower and 690 lb-ft. Vortec 8.1: Tuning Potential. And I don't care what your compession is, if you're gonna pound on it, you better have at least some premium fuel in it. I'm looking at buying a used 1994 to 1998 GMC sierra 4x4 1500 with a 5.7 Vortec. The 5.3L replaced the 5.7L because automakers have to constantly improve on fuel economy and reliability. Re: Vortec 454: School me! I have been researching all over the internet looking to find out what it is that holds the power back on these engines. LOL. It won't get diesel mileage, but considering the size of the engine, they do pretty dang good really. believe it or not, the 8.1 uses the same heads as the Vortec 454 as well as the same cam (from my research). The valve train has an overhead valve, ohv, configuration with two valves per cylinder. 192K on a '92 fullsize Blazer. That 8.1L is going to outpull a 6.5L any day of the week, and get better mileage than a 454 doing it. In a mild form these things should be good for 350 horspower and 450 ft/lbs right?Well, to the average poor guy(like me) a 454 is still a big motor. For one thing, the 454 Vortec has a redline similar to that of a diesel - 4000 rpm. I have been researching all over the internet looking to find out what it is that holds the power back on these engines.
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vortec 454 life expectancy


That is also going to limit my head choices since the intake is oval port if the heads are right? truck. Oh, and it's gotta be smog legal. But other then that, only if I was in that deep fixing something else on a high mile motor and then it just makes sense to do it.I'll be done when I'm finished, if that's not fast enough, take a number!I know timing belts have to be replaced every 80,000 to 100,000 miles, but what about chains? ;)believe it or not, the 8.1 uses the same heads as the Vortec 454 as well as the same cam (from my research). The stock intake has to stay to stay CA smog compliant. That will enable you toWell, to the average poor guy(like me) a 454 is still a big motor. It had 410 torque at 3,200 rpm. I know this is NOT a diesel, but I don't like diesels. That will enable you toThose responses are pretty much what I thought. The 8.1L isn't a bad engine, just likes fuel since it's a gas burner. Staying N/A, what would you do to get this thing to make more usable power? Does anyone have any experience with these late model 454s? What cam would you guys recommend with stock heads? They are factory rated at 290/410, but this is a 454 we are talking about here. I want this thing to be able to pull as close to a diesel as possible. The engine has multi-port fuel injection for induction of fuel. Let's say 1500 rpm up to 4500-5000 rpm. It's my understanding that the Muscle-Car 454 "Chebby" and the 454 Vortec are two separate and distinct engines that just happen to have matching displacements. They are factory rated at 290/410, but this is a 454 we are talking about here.

One truck that I was looking a, a 1996, had 280000 km on the clock, and I was curious about how well these trucks hold up to large amounts of km like that.
I thought the same thing, 8.1 swap, but I think the 454 has a bit of potential with a few changes.All times are GMT-8.

Remember, 6k lb. In a mild form these things should be good for 350 horspower and 450 ft/lbs right?Does anybody know the dirt on the Vortec 454 engines? The Vortec 8100 isn’t super impressive in stock trim, but it’s designed for heavy duty work. You Must have headers. And I don't care what your compession is, if you're gonna pound on it, you better have at least some premium fuel in it. I like big blocks. Have I tied your hands enough?
Does anybody know the dirt on the Vortec 454 engines? Like I said earlier, standard big block parts won’t fit on the Vortec 8100, so the performance parts available for it are close to none. Stock stuff seems to hold up great.2015 Reg cab, 2wd, 5.3l, On3 single turbo, E85 conversion, 4.10 rear gear, and HP Tuner software.I' think I've only replaced just the chain once on a stock engine because it had over 300k and the timing was all over the place. The 7400 Vortec V-8 GM engine has 454-cubic inches and was rated at 290 horsepower at 4,000 rpm. ---------------------------------------------------------- - 2007 Silverado Classic 4x4 Extended Cab 5.3l - Black Bear Performance ... SilveradoSierra.com - Chevy Truck Forum | Silverado Sierra GMC Truck Forums The only site focused on Silverado/Sierra trucks exclusively. Other versions of the Vortec 8100 make as much as 550 horsepower and 690 lb-ft. Vortec 8.1: Tuning Potential. And I don't care what your compession is, if you're gonna pound on it, you better have at least some premium fuel in it. I'm looking at buying a used 1994 to 1998 GMC sierra 4x4 1500 with a 5.7 Vortec. The 5.3L replaced the 5.7L because automakers have to constantly improve on fuel economy and reliability. Re: Vortec 454: School me! I have been researching all over the internet looking to find out what it is that holds the power back on these engines. LOL. It won't get diesel mileage, but considering the size of the engine, they do pretty dang good really. believe it or not, the 8.1 uses the same heads as the Vortec 454 as well as the same cam (from my research). The valve train has an overhead valve, ohv, configuration with two valves per cylinder. 192K on a '92 fullsize Blazer. That 8.1L is going to outpull a 6.5L any day of the week, and get better mileage than a 454 doing it. In a mild form these things should be good for 350 horspower and 450 ft/lbs right?Well, to the average poor guy(like me) a 454 is still a big motor. For one thing, the 454 Vortec has a redline similar to that of a diesel - 4000 rpm. I have been researching all over the internet looking to find out what it is that holds the power back on these engines.

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