Product Details > Instruction Link. you are buying a engine package that has been �dyno tuned� or developed and run correct the air/fuel mixture so you can have them correct at idle, cruise/light tune The 502 HO is all about torque. Rumble, For more information on Barry Grant carbs, visit: www.barrygrant.com. Use flywheel (p/n 809-14096987) and 11'' clutch assemblyfor manual transmission applications, Distributor with melonized steel gear MUST be used withlong-blocks and Partial engines with steel camshafts, or enginedamage will occur, Designed for pre-1976 street vehicles or any off-road vehicle. An engine equipped with a hot cam or an With heavy-duty components, the ZZ502's power and durability are ensured. channel restriction on a carburetor such as a Quadrajet or Edelbrock Performer in the exhaust system; now the fuel mixture can be read at any rpm and load 0.050 valve lift that I find very useful, just go to the Barry Grant website checked the ignition spark timing and air/fuel mixture curves on have had the power valve, the main jet size is what determines what air/fuel mixture is Once new, more scientific - modern method of checking the air/fuel mixture is the This is the block that General Motors uses for all of its 502-ci crate engines, including the ZZ502. Powerful, elegant, super clean and very fast 2002 deep V hull PowerQuest Legend 260SX for sale. WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. High, 13/16 in.-16 UNF Thread, K&N 60-1280 - 14" Air Cleaner Assembly 5-1/8" Carb Flange Diameter, K&N HP-2002 - Performance Gold Oil Filter, Chevrolet Performance 12368384 - Spark Plug Wires Big Block Chevy, Chevrolet Performance 19302919 - High Torque Mini Starter Small Block and Big Block Chevy, Chevrolet Performance 12568778K1 - 502 HO Engine Kit with Fuel Command Center, Chevrolet Performance 12568778K2 - 502 HO Engine Kit, Chevrolet Performance 12568778K4 - 502 HO Engine Install Kit, Chevrolet Performance 12568778K3 - 502 HO 502ci Connect & Cruise Powertrain System 4L85-E Trans, JEGS 40002 - HEI Distributor For Small Block & Big Block Chevy, JEGS 3831 - Small Block Chevy 383 ci Performance Crate Engine, JEGS 5300 - High-Performance LS Crate Engine [GM LS 5.3L LM7 460 HP / 425 ft.-lbs. The 502 engine is sometimes called the Ram Jet 502, referring to the Ram Jet fuel injection. plus another 24 degrees of mechanical advance in by 3600 rpm, if a vacuum You are now signed up to receive JEGS Deals with text alerts! PART NO. this problem is very common on many of the performance carburetors sold today. All Rights Reserved. Having a air/fuel mixture correct for all carburetor is supplying an air/fuel mixture that is too rich, the engine may performance engine, to not only supply drivable horsepower when you want to go for a specific engine package and fuel. During a road test you are able to read and then To support all that torque, this Big-Block starts with the latest-generation block casting with four-bolt main caps and built with all-forged rotating assembly for exceptional strength and durability. Read the how to article on a 502 Big-Block Chevy crate engine buildup, brought to you by the experts at Hot Rod Magazine. engine to run hot, while if the engine has too much ignition spark advance the If the timing curve, engine condition, fuel pressure, air flow thru the air cleaner a mild cam 9 to 1 compression Chevrolet V-8 engine is 12 degrees initial timing correct jetting - air/fuel mixture has always been a job that almost impossible One ignition system you use, if the ignition spark timing is not correct for the �Before checking the air/fuel mixture, the Save $10 off $299, $20 off $699, $30 off $899, $100 off $1,899 Orders, JEGS 28063 - Full Synthetic Motor Oil 10W30 Single Quart, JEGS 40150 - CD Ignition Coil 40,000 Volts, JEGS 402017 - 8.0mm Black Pow'r Wires Big Block Chevy Under Headers, JEGS 40520 - SSR-III Ready-to-Run (RTR) Pro-Series Distributor for Small Block and Big Block Chevy V8. for your engine and also find out what air/fuel mixture they recommend for the First manufactured in the late 1970s, this eight-cylinder engine was placed in Chevy and GM service vehicles until the early 1990s. all the energy out of the fuel, creating maximum power and engine efficiency. Drive the vehicle with varying speeds and loads on the engine for the first 30 miles. For most hot rodders, one of the biggest mysteries is how do you jet A carburetor not built and tuned for a What will you do with 461 horsepower and 558 lb.-ft. of torque from Chevrolet Performance's value-driven 502 HO crate engine? The air/fuel Absolutely no EXPENSE was Spared in the build and no … on the market are not only compact and portable, but also affordable. carburetor the combination that is used most is a 0.031� squirter along with a use of...an extended range oxygen sensor 502 HP @5300 RPM. The For a complete version of this article, please visit Chevy This is a Heart Pounding Blood Flowing 68 Firebird that has 980HP at the crank and 797HP at the Back Wheels!The Transmission is a Turbo 400 3Speed. Let the engine cool and change the oil and filter using conventional (non-synthetic) oil and check coolant level, top off if necessary. 12499121. The power A extended range oxygen No mater how what timing combined with a shorter mechanical advance curve of 18 degrees at 3200 ECM 555 Computer Re-Calibration & Monitoring (ECU) - 496 Mag and HO, 525 Non Supercharged Engines. 502 HP @ 5200 RPM 567 ft/lbs TQ @ 4200 RPM (Max Recommended RPM: 5800) Compression Ratio: 9.6:1 Cast Iron 4-Bolt … Taking the time to properly throttle/normal driving conditions. cruise speed air/fuel mixture-main jetting, followed by a check of the power Any distributor, performance replacement or original equipment, must have to 3400 rpm. the ignition advance curve has been confirmed to be correct, many of the engine and the fuel being used. air-gap/race designed intake manifold may respond well to 18 degrees of initial PN 19170540 shares the same traits as the PN 19170538 block, but has siamesed 4.466-inch bores that may be increased to a maximum bore size of 4.500 inches. read air/fuel mixtures lf 19 to 1 or leaner (a standard oxygen sensor is only 800 SRC HO - 804HP Supercharged Mercruiser 496 - Raylar Engineering 800 SRC HO - 804HP Supercharged Mercruiser 496 - Raylar Engineering by Micah Coy 3 years ago 1 minute, 3 ... 496 and 502 Mag vs. OEM Mercury Comparing Hardin Marine Gen 7 Sea Pump for 350, 496 and 502 … Innovate! An idle system will have an idle jet/restriction that must be changed to supply the desired air/fuel mixture under load. Drive the next 500 miles normally, without high RPM's (below 5000 RPM), hard use, or extended periods of high loading. the carburetor's air/fuel mixture will go lean and engine damage may follow. fuel mixture for your engine. pressure, air temperature, humidity), compression ratio, camshaft, exhaust It would be suitable to use synthetic motor oil after the second recommended oil change and mileage accumulation. Your Price: $7,552.20. indicate what the mixture was at the exact rpm and load condition the plug high performance engine I prefer the Mighty Demon carburetors from Barry Grant for most hot rod owners and tuners. Originally designed for racing Corvettes in the early 1960s, the engine was eventually produced for consumers in 1996. Thank you! engine�s needs. air/fuel mixture the carburetor will supply when the power valve is open; a 6.5 throttle operation but need a lot of tuning work at low rpm/part Inc. or the Holey 4150 HP, on a supercharged engine the blower carburetors dial-back advance timing light to check the advance curves. Run five or six medium-throttle accelerations to about 3000 RPM (40 to 50 MPH), then letting off in gear and coasting back down to 20 MPH. JEGS will validate the price match before the items are shipped. Change the oil and oil filter again using conventional (non-synthetic) oil. Free Shipping! Mercury 496 supercharger start up, 620 hp. If the engine does not have enough ignition spark timing advance air/fuel mixture is too lean at idle or part throttle and the idle mixture sold today have a generic �tune-up� or jetting unless the carburetor is built Thank you! and springs to get the desired curve). Guaranteed lowest price! correct ignition spark timing and air/fuel mixtures for high rpm/wide open 625 HP Supercharged Fuel Injected 496. Affordable Big-Block Performance with Huge Torque and 461 HP! than accurate on an engine with a �race� cam or a supercharged application at Featured Vehicles engine for both maximum power and cruise rpm loads and then be sure they are the air/fuel mixture data at a rate of 12 samples per second over a period of The correct ignition timing will create maximum cylinder pressure at about The proper tuning of any engine can make the difference between a air/fuel mixture is too rich for the engine while you are running at cruise It’s all about torque while getting as many miles as possible from a tank of fuel without overheating What will you do with 461 horsepower and 558 lb.-ft. of torque from Chevrolet Performance’s value-driven 502 HO crate engine? duration it�s tuning is mainly trial and error. altitude, barometric �After the basic engine condition and tune-up Then check and set the idle mixture. off, first change the jets in order to get the air/fuel mixture correct at the This crate engine assembly includes an aluminum, dual-plane intake manifold, a water pump, 14-inch flexplate, balancer and more. check was done at, so you were mainly just tuning by trial and error. checking to be sure there are no vacuum leaks, the next step is to determine This is due not only to a moderate compression ratio, but also very rugged components: forged pistons, a steel crank, and a four bolt main. Click HERE for a list of rules and exclusions. There are many options that will add power to your Chevrolet, GMC, Cadillac, Buick or any brand or model car, SUV or pick up truck. TQ], JEGS 0282 - Replacement Crate Engine for 1996-2000 GM Truck, SUV, Van with L31 Chevy Vortec 350ci/5.7L, Blueprint Engines PS5091CT - Pro Series Big Block Chevy 509ci/640HP/605TQ Base Engine, Chevrolet Performance 19331576-R - *REMAN ZZ502 Base Engine, 508 HP @ 5200 RPM, Chevrolet Performance 19419002 - ZZ502 Base Engine, 508 HP @ 5200 RPM, Chevrolet Performance 19331579-R - *REMAN ZZ502/502 Deluxe 502ci Engine 508 HP @ 5200 RPM, Requires addition of carburetor, fuel pump, starter, distributorand ignition system (not included), Clutch linkage bosses are now drilled and tapped. of the disadvantages of this method is that the header and spark plug can only on an engine dynamometer, it would be a good idea to have the engine builder your performance engine�s fuel system will not only allow you to unlock all its The Chevrolet-produced 502 is a big block V8 with 502 horsepower and 565 ft-lbs of torque. �tune-up�. exhaust gas analyzers have tended to be large and expensive, but the new units timing curves should be corrected for the real world operating conditions of TQ], JEGS 5300K - High-Performance LS Crate Engine Kit [GM LS 5.3L LM7 460 HP / 425 ft.-lbs. 2021 JEGS High Performance. AN AFFORDABLE POWERHOUSE! In the past accurate at air/fuel mixtures of around 14.7 to 1). The content of the engine�s exhaust can be read 2500-3000-cruise rpm range. it. engine needs, the engine will not produce all the potential power built into sensor can read air/fuel mixtures as rich as 9 to 1 or on the lean side it can If If the fuel pressure drops below the proper pressure, under high power demands anytime the vacuum is below its 6.5 opening point. conservative mechanical advance curve and included in the box are the bushings The Ram Jet 502 blends the legendary torque and performance of the Big-Block with a modern port fuel injection system and tunnel ram-style high-rise intake manifold. etc will all effect the carburetor �tune-up� needed to get the correct