Bench race away fellas.only issue is the factory vavletrain is non adjustable..It is MPFI.
This page was generated at 02:51 PM. Remember, 6k lb. 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'm looking at buying a used 1994 to 1998 GMC sierra 4x4 1500 with a 5.7 Vortec. 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 have been researching all over the internet looking to find out what it is that holds the power back on these engines. The new 5.3L fall under GM's 5yr / 1000,000 mile powertrain warranty. The 7400 Vortec V-8 GM engine has 454-cubic inches and was rated at 290 horsepower at 4,000 rpm.
Does anybody know the dirt on the Vortec 454 engines? It's also physically larger, seemingly, than the Chebby 454. Hey all. 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. The Vortec 8100 isn’t super impressive in stock trim, but it’s designed for heavy duty work. I know timing belts have to be replaced every 80,000 to 100,000 miles, but what about chains? I know this is NOT a diesel, but I don't like diesels. Now, let's add the wrench to the gears that this engine is in a 1 ton 4wd crew cab truck. Still runs great, uses/leaks a little oil ~1/2 quart in 2500 miles. Let's say 1500 rpm up to 4500-5000 rpm. 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. That will enable you toThose responses are pretty much what I thought.
And this is a factory roller setup. Staying N/A, what would you do to get this thing to make more usable power? 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. Re: Life expectancy of a Timing Chain Jan 19 2019, 4:50pm Timing chains are pretty solid on the ls motors, My truck has 385,000km on original chain no odd sounds, really dont think you have to worry about them. Oh, and it's gotta be smog legal. Does anyone have any experience with these late model 454s? The 8.1L isn't a bad engine, just likes fuel since it's a gas burner.
That 8.1L is going to outpull a 6.5L any day of the week, and get better mileage than a 454 doing it. - 2002 GMC Sierra Denali Quadrasteer 6.0L AWD, 4.10s, K&N FIPK, Blackbear, Dumped Magnaflow, Goodmark Cowl - - 1994 K1500 Chevy Blazer Silverado TBI 5.7L 4x4, Last year of … 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? I have been researching all over the internet looking to find out what it is that holds the power back on these engines. It had 410 torque at 3,200 rpm. They are factory rated at 290/410, but this is a 454 we are talking about here. Other versions of the Vortec 8100 make as much as 550 horsepower and 690 lb-ft. Vortec 8.1: Tuning Potential. Have I tied your hands enough? The engine has multi-port fuel injection for induction of fuel. truck. I thought the same thing, 8.1 swap, but I think the 454 has a bit of potential with a few changes. The ls3 style tensioner system can break with big thumping cams and the ls1 style cam sprocket bolts have been known to back out.
What cam would you guys recommend with stock heads? Re: Vortec 454: School me! 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? It won't get diesel mileage, but considering the size of the engine, they do pretty dang good really. LOL. ---------------------------------------------------------- - 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.
You Must have headers. 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. The engine has a bore and stroke of 4.24 inches x 3.99 inches. They are factory rated at 290/410, but this is a 454 we are talking about here.
You Must have headers. 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. I want this thing to be able to pull as close to a diesel as possible.
I like big blocks. Timing chains are pretty solid on the ls motors, My truck has 385,000km on original chain no odd sounds, really dont think you have to worry about them.The only issues I have ever seen on the ls motors timing components are a result of huge cams. 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.
believe it or not, the 8.1 uses the same heads as the Vortec 454 as well as the same cam (from my research).