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Buy Chevrolet Performance 12681431 at JEGS: Chevrolet Performance 5.7L/350ci L31 Long Block Crate Engine with Vortec Heads for GM Trucks/Vans. Guaranteed lowest price!
Headers bolt onto the block and attach to the stock exhaust pipes and catalytic.
Horsepower increases for carburetor and manifold are dependent on the rest of.
. L31 (Vortec 5700) heads were the last and most advanced ever produced that .
Sep 22, 2006.
There are many different ways to build an engine, and when the object is a.
like claiming $25 for a swap meet carb, or a set of ported heads that a buddy was.
. grind, with 224 degrees duration (at .050) on the intake and exhaust lobes, and 0.352 inch lobe lift.
. Budget Vortec 350-Turnkey Crate Motor.
General Motors’ most powerful production engine yet can now be ordered as a crate motor thanks to the folks at Chevrolet Performance.
throttle body mounted in place of the carburetor and is good.
If it's in fact a L31 (5.7 Vortec) then it will already be a roller cam engine. Compression(stock L31) is I think 9.4:1. HP/TQ numbers from a stock L31 are 255hp/330tq. I have a 98 Z71 as my daily and it moves my 5,000 lb truck quite well.
It should be noted, that the GM Performance Parts 350 HP (330hp-p/n12486041-)crate engine is basically a stock Vortec 350 longblock with it's stock roller cam removed, and hydraulic flat lifter camshaft with specs of 212º/222º duration at 0.050" and lift of 0.435"/0.460" I/E LSA of 112.5º.
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Jeep Drivetrain Components · Jeep Engines & Components · Jeep Exhaust.
. Chevrolet Performance 5.7L/350ci L31 Long Block Crate Engine with Vortec Heads for GM.
JEGS 0282 – Replacement Crate Engine for 1996-2000 GM Truck, SUV, Van with L31 Chevy Vortec 350ci/5.7L.
Horsepower.
Carburetor Included.
Horsepower and the.
from street to race motors, carb to fuel injection-it is really a matter of your personal taste for performance. Where does one start with Edelbrock? The company has a number of.
Three Kinds of Crate Motors; Engine Break-In Guide.
Engine Assembly, Crate Engine, Chevy 350, L31-R, Truck/Van, 8,600 and.
Carburetor Included: No.
. all new components added headers with true duals motor runs great. diffidently.
This new crate engine is based on the production LT1 V-8 engine from the Corvette Stingray and Camaro SS. It gets a unique high-performance camshaft and CNC-ported cylinder heads. As a result, it puts.
Upgrading to a marginally more aggressive solid-roller cam and a Dominator carb.
all necessary engine sensors, and Mast’s M90 stand-alone computer. Like most crate engine manufacturers, Smeding.
Jan 31, 2017.
For stock power production, the hot ticket is the L31, Vortec-headed 350 offered.
a hydraulic roller cam and a power rating of 255 hp and 330 lb-ft of torque.
After adding a set of long-tube headers, an electric water pump, and five.
take full advantage of the airflow offered by the heads, intake, and carb,
L31-R crate engine; Dyno Don Headers with A.I.R. tubes (from Dyno Don on this.
. This combo is potentially good for 458 HP and 585 lb-ft of torque.
. I used CARB legal heads to replace the vortecs, which had the internal.
At a base horsepower of 195, the engine can produce up to 260 HP and 350 ft/lbs torque with a 4-bbl carburetor and headers. The engine is covered by a GM warranty for three years or 100,000 miles in applicable GM vehicles only. JEGS has the GM Goodwrench Chevy 350 for sale at a great price! Specifications. 4-bolt main with a 2-piece rear main seal
Nov 1, 2001.
The Demon 750-cfm mechanical-secondary carburetor performed flawlessly in this test.
The Vortec head moves the spark plug closer to the exhaust valve, which can.
Chevy engines, it used to require considerable skill to make 400 hp with stock.
. Chevrolet Performance SP350/385 crate engine swap.
Mar 1, 1999.
Mounted on Westech's dyno, ours breathed through headers and.
Carb calibration and initial lead was optimized as needed. In otherwise stock form, the engine made 197.3 dyno hp at 4,600 rpm, with 261.3 lb-ft of torque at 3,100.
. of '96-'97 Chevy truck L31 Vortec heads with 1.94-/1.50-inch valves.