454 vortec low power

An LY2 4.8L Vortec Engine costs a little over $500. You can get a fairly used one for $250. And there is no junkyard across the US missing this kind or related engine. The Cons of the Vortec Engine. Presence of Piston Ring Seals and perfect oil system. Some variants of this engine are infected with piston ring seals of low quality and bad shape. I think it would make a kickass motor in a car. The fuel injected vortec 454 was rated at just under 300 hp and 440 ft/lbs of torque. Would it be a good strip motor? Probably not. Would it be a good motor to blow someones doors off on the street? Yes. Low pressure would cause no power. This can be caused by a plugged fuel filter or failing fuel pump. Misfire can be bad spark plugs, plug wires, distributor cap and rotor, ignition coil, or fuel injector problem. You could also have a bad sensor causing an engine problem. No rust !!! 2 owner, low miles 1994 GMC Jimmy SLE 4.3 V6 Cyl Auto Like Chevy Blazer S10 Great Condition 2 Owner 1990 GMC Jimmy SLE K5 Sport Utility 2-Door 5.7L V8 Vortec 4X4 White/Blue 4WD I have a 97 chevy 454 vortec it acts liek it loades up at a red light and hesitates when u go to take off. it also cuts out while driving, the local gm dealer was not much help they said no codes and could not find the problem but the fuel pump was losing pressure when key is off and mbe it is the eger valve. any ideas Apr 02, 2011 · FYI: I make a cam for this engine that is close to a 100 HP and 100FT lb torque gain over the stock cam, is a mileage improvement and it idles almost undetectable. It is a power improvement over the stock cam even from idle and of course throughout the entire RPM range. I'll make you a 100% money back guarantee on the cam as well. 1998 Winnebago Prices, 1998 Winnebago Values w/ MSRP & Used 1998 Winnebago Specs | NADAguides Sep 22, 2011 · all generation 1 small block heads are interchangeable. The 305 heads will work on the 350, however, the 305 heads have small 57cc - 60cc chambers which will raise the compression ratio on a 350 quite a bit, depending on what piston, possibly too much. they also have small 1.84 intake valves, which will give a 350 killer out of the hole power, but will lack upper RPM power, you`ll feel the ... The piston swap increased the static compression from pathetically low to a more reasonable 9.3:1. The peanut-port heads received a light surface and performance valve job, but were not ported in any way. Additional power would be possible with porting, as the stock head flow was certainly limiting power of our 461 (.030-over 454). 2005 gmc 3500 drw turbo diesel 4x4 crew cab ***low miles*** Gmc 3500 crew cab 4x4 454; 2012 gmc sierra 3500 denali diesel drw 4x4 nav 7k miles texas direct auto(US $52,980.00) Gmc sierra 3500hd 2009 - vortec 6.0l v8 sfi - electronic hd 6-speed auto - 4wd; Auto Services in Arizona Oct 03, 2017 · Surprisingly, the 454 laid down an impressive 330 horsepower and 475 pound-feet of torque. Naturally, the truck-based 454s were tuned for torque, so having nearly 500 pound-feet wasn’t a big... BluePrint Engines 496 Stroker Crate Engine | Big Block Chevy 454 Style | Longblock | Aluminum Heads | Roller Cam | Power Adder Ready. 561 HP / 512 FT LBS 8.8:1 BluePrint Performance Aluminum Heads (Part# HP8013) Forged Pistons Hydraulic Roller Cam Forged Crank Part #: BP49610CT. $8,699.00 MORE INFO Search Results Nelson's Speed Shop Greenville, MI (616) 754-9185 Clue to a good port. The flow should rise very quickly. For example: Lets take a head that flows a maximum of 300CFM. The lower the lift at which that number is reached, the better the port design. If maximum flow is reached at .500" lift the head will produce a better power curve than if the valve must be opened to .700" lift or more to get ... Dec 12, 2018 · When GM first introduced its small-block engine to the world, it was specifically designed to give Chevrolet an edge over Ford’s flathead V-8. This was in the mid-’50s, and before that, Chevrolet relied on inline six-cylinder engines to power its passenger vehicles. 396/402/427/454: Open: 118cc: 375 L-89 430 L-88/ZL-1 425, 465 LS-6/LS-7: 3964291: 1969-70: 396/402/427/ Closed: 109cc: 396/402/427/454 large or small spark plug ... MARINE POWER 454 Standard 330HP vs MARINEDIESEL MD350SC-R HAMMERHEAD 345.2HP. MARINE POWER 454 Standard 330HP vs Lugger L1276H 375 HP. 99 Suburban 2500 with a 454 bogs down bad while under load while giving it some throttle. It has a strong air sucking sound while it does this. I hooked up a fuel pressure gauge and here are the readings. Truck cold: ignition on truck not running 50psi and drops down to 22 in 5 minutes. Truck cold: Running at 47psi. Truck cold: 2000 rpms at 47psiVortec 8100 / 8.1L / 496cid Intake Manifolds. The stock 8.1 liter intake manifold was designed for low RPM use and cannot meet the high-RPM air flow demands of the 496 / 8.1 liter engine in performance applications. Our Cool Gap intake manifold has been engineered for one purpose, maximum airflow and power output. I am considering some performance upgrades to my 2000 Winnebago Brave with the 7.4 liter engine. I would like the biggest bang for the $. Dollar for Dollar, it is highly unlikely that the $2400 for a full blown Banks Power Package would yield the same cost/benefit as say the addition of the UltraPower GM / Workhorse 7.4L (454) Custom Tuning module.
Jun 07, 2016 · If EMP is a concern for you, or you just prefer simplicity. you can convert your Vortec to carb quite easily. for this you need to replace the intake manifold, distributor and add a carb. the Vortec engines (98-up for the 5.7 and 95 up for the 4.3) use different heads than the 1955-1988 Gen1 and 1988-9x Gen2 small blocks and v6. you cant use the old intakes on these engines.

Pre-Vortec intake manifolds require 12 bolts into cylinder heads. Increase horsepower from a 2 barrel carburetor and intake with a 4 barrel carburetor and this new GM intake manifold. 5.0L/305ci - 5.7L/350ci Edlebrock Performance Intake Manifold 2516

Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers.

Save up to $54,147 on one of 27,875 used 1999 Chevrolet Silverado 1500s near you. Find your perfect car with Edmunds expert reviews, car comparisons, and pricing tools.

Good luck getting good gas mileage from a carbureted class A with any motor. I had a 80 Itasca with a 454/ 400 combo a few years ago. Ran like a top, too, but only 4 to 6 mpg is all I could get out of it, unless you want to run around 50 mph. Taking the cats off won't do a thing but make the exhaust stink.

John Deere irrigation engines, 6068T, 4045T Everything new except engine. Low hr gov surplus generator engines. 12 volt systems. New clutch. Have 168hp 6068T's and 111hp 4045T's. All John Deere parts used to convert to irrigation engine. Inj pump governor converted to correct variable style. $17k to $19k. No core needed.

The Vortec 8100 is an 8.1L V8 from General Motors. It was designed as a diesel alternative in the GM pickup truck line-up. The Vortec 8100 borrowed much of its design from the 454 CI big [More…]

Sep 22, 2011 · all generation 1 small block heads are interchangeable. The 305 heads will work on the 350, however, the 305 heads have small 57cc - 60cc chambers which will raise the compression ratio on a 350 quite a bit, depending on what piston, possibly too much. they also have small 1.84 intake valves, which will give a 350 killer out of the hole power, but will lack upper RPM power, you`ll feel the ...

The Vortec 454 engine had 7,439 cubic centimeters, or 454 cubic inches, of displacement, giving it the 454 or 7400 name. It was an eight-cylinder engine with a multi-port fuel injector, and each cylinder had two valves that were operated by hydraulic roller cams. Each cylinder had a 107.95-mm bore and a 101.6-mm stroke. Question: 1999 Chevrolet Suburban 2500 454 cid 7.5 L. Ran fine two weeks ago, check engine light came on, then soon after check gauges light came on. Oil pressure dropped down when I stopped, then came back up while driving. Seemed a little low. Truck was running fine. This week hooked up the camper started to tow. Loss of power and sputtering. is most apparent in the Vortec 454. The Vortec 454 was touted as having substantially more power. This is a lie. The Vortec enhancements simply allowed GM to pass smog at a higher RPM. The old, weak 240 HP 454 is every bit as strong as the new, high power 290 HP Vortec 454. So, perhaps in an attempt to get more low-end torque for 1997 GMC Suburban, 7.4L Vortec. 4L80E etc etc Symptoms: - Problem started slowly then quickly got worse over the course of a few days - Truck is NOT throwing codes.. At one point it threw a P0174 which is Lean Bank 2..but no longer tripping any codes.I assume when you say a late 90's 7400 454 Chevy engine you are talking about the VORTEC MPFI engine used from about 1996 to 1999. These engines were rated about 275-290 HP and about 390-410lb/ft. of torque. The 8.1L L18 engine was used from 2000 thru 2008 GM in the HD trucks. These were 496 cu. inch engines and were developed for better torque. The GM / Chevy LM4 is a 5.3 l (325 cu.in.) natural aspirated V8 90° four-stroke gasoline engine from a Generation III small block V8 truck engine series. The LM4 engine is an aluminum block version of the LM7 and it was produced from 2003 to 2005.