Torque Specifications Chevy 350 Intake
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Torque Specifications Chevy 350 Intake

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350/290 HP Engine Long Block Specifications

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OF19172591246200 Grand Pointe Drive, Grand Blanc, MI

48439350/290 HP Engine Long Block Specifications

PART NO.PAGE
OF19172591246200 Grand Pointe Drive, Grand Blanc, MI

48439engines and components.Rather, it is designed to provide supplemental information in areas of interest to do-it-Special Parts NoticeThis part has been specifically designed for Off-Highway application only.Since the installation of this part may eitherit should not be installed in a vehicle used on any street or highway.Additionally, any such application couldadversely affect the warranty coverage of such an on-street or highway vehicle.Chevrolet, Chevy, the Chevrolet Bow Tie Emblem, General Motors, and GM are all registered trademarks of the GeneralMotors Corporation.Package contents:1Engine Assembly12Long Block .....................................63 ............................................35 ..............................................65 .....................................................25 .........................................15 ........................................97 350/290 HP Engine Long Block Specifications

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OF19172591246200 Grand Pointe Drive, Grand Blanc, ............................................18 Nut/bolt/screw ...........................................97 ...................................................................30 ...........................................................15 .....66 .............................................80 ......................................................................15 ................................................35 ..................................................30 Component Information:with pressed-in 3/8" studs and 76 cc combustion chambers.

The water passages are the same as the original 1955The 350/290 HP engine block has provisions for both right-hand and left-hand dipsticks.

The 350/290 HP engineand 12552920 (tube).

If not using right-hand dipstick, use plug 09421743.03876870 (upper tube).P/N 03951600 (lower tube) is installed at the factory.

If not using left-hand dipstick, useplug 93415510 to prevent an oil leak.

The 350/290 HP engine assembly does not include an oil filter adapter oroil filter element.

The 350/290 HP uses an AC # PF 454 or PF1218 oil filterusage.

Camshaft lift is .450 intake / .460 exhaust.

Camshaft duration (@.050) is 222 degrees intake andexhaust.

Lobe centerline is 114 degrees.

Normal engine manifold vacuum for the 350/290 HP engine is 10-12CautionThis engine assembly needs to be filled with oil and primed.You should add the specified oil (see start-upinstructions) to your new engine.Check the engine oil level on the dipstick and add accordingly.350/290 HP Engine Long Block Specifications

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OF19172591246200 Grand Pointe Drive, Grand Blanc, MI

484391.After installing the engine, ensure the crankcase has been filled with 10w30 motor oil (non-synthetic) to the2.

The engine should be primed with oil prior to starting.

Follow the instructions enclosed with the tool.To primefor the first time.Also, prime the engine if it sits for extended periods of time.

Reinstall the distributor in the3.Safety first.If the vehicle is on the ground, be sure the emergency brake is set, the wheels are chocked and4.Set initial spark timing at 10 before top dead center (BTDC) at 650 rpm with the vacuum advance line to theThe HEI vacuum advance canister should remain disconnected.

This engine is designed to operate usingonly the internal centrifugal advance to achieve the correct timing curve.

Rotate the distributor counterclock-5.When possible, you should always allow the engine to warm up prior to driving.

It is a good practice to allow6.Once the engine is warm, set the total advance timing to 32 at 3000 RPM.7.The engine should be driven at varying loads and conditions for the first 30 miles or one hour without wide8.Run five or six medium throttle (50%) accelerations to about 3000 RPM and back to idle (0% throttle) in gear.9.Run two or three hard throttle (WOT 100%) accelerations to about 3000 RPM and back to idle (0% throttle) in10.Change the oil and filter.Replace with 10w30 motor oil (non synthetic) and a PF454 or PF1218 AC Delco oil11.Drive the next 500 miles under normal conditions or 12 to 15 engine hours.Do not run the engine at its maxi-12.Change the oil and filter.Again, inspect the oil and oil filter for any foreign particles to ensure that the engine13.Do not use synthetic oil for break-in.It would be suitable to use synthetic motor oil after the second recom-mended oil change and mileage accumulation.

In colder regions, a lower viscosity oil may be required for350/290 HP Engine Long Block Specifications

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OF19172591246200 Grand Pointe Drive, Grand Blanc, inch x Diameter ( mm .................................20 ......................................................AC ................................................AC ............................................045Additional parts that may be needed:The 350/290 HP engine does not include a harmonic damper.

It does include two timing tabs to use eithera 6 3/4 or 8 damper.

Part number for the 6 3/4 damper is 12551537 and for the 8 is 88960604.

UseThe 350/290 HP Base engine does not come with an intake manifold.

Recommended intake manifolds areThe 350/290 HP Base engine does not come with a water pump.

Recommended water pump P/N is350/290 HP Engine Long Block Specifications

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OF19172591246200 Grand Pointe Drive, Grand Blanc, MI

48439 cross-ignition systems.Check for adequate clearance before installation.with 10 or 12 gauge wire through a high quality ignition switch.If you are installing an HEI ignition in an early-model v
Dortorspec
C110 lbs594-0051992-91 3.8L (231) Buick, Chevrolet, Oldsmobile, Pontiac110 lbs594-0061986-77 5.7L (350) And 5.0L (302) Chevrolet, GMC Truck70 lbs594-0071994-92 2.3L (140) Ford Tempo, Mercury Topaz 100 lbs594-0081994-77 2.8L (173), 3.1L (189 & 191) Buick, Chevrolet, Oldsmobile, Pontiaccc162 lbs594-0281990-77 4.3L, 5.0L, 5.7L, 6.6L Buick, Cadillac, Oldsmobile250 lbs594-0291976-75 4.1L (250) Buick, Pontiac, Chevrolet, GMC Truck60 lbs594-0301972-69 6.5L (396), 6.6L (400, 402), 7.0l (427) Chevrolet, GMC Truck 85 lbs594-0311990-75 4.8l (292) Chevrolet, GMC Truck 2 Groove PulleDorman #Applications594-1021990-86 2.9L Ford Bronco 130 lbs594-1032000-90 3.3L Chrysler, Dodge, Plymouth40 Eclipse, Galant45 lbs594-1071996-92 V8-5.7L (350cid) Vin P Chevrolet Corvette77 lbs594-1082003-96

V6-3.0L (182cid)

Ford Taurus, Sable18 lbs594-1092003-95 V6-2.5L (152cid), V6-3.0L (182cid),

Ford Contour, Escape, Mercury Cougar, Mystique86 lbs594-1102002-96 V6-4.6l (281cid)

Ford (245cid)

Ford Truck Explorer, Ranger, Mercury Mountaineerna594-1122000-97 V8-5.4L (330cid)

Ford Truck E-Series, E Super Duty, F Series Pickup, Lincoln Navigator66 lbs594-1131970-66 V8-6.5L (396cid), 7.0L (427l) Chevrolet Bel Air, Biscayne, Camaro, Caprice, Chevelle, Corvette, El Camino, Impala, Malibu70 lbs594-1141996

V8-5.7L (350cid) Vin 5

Chevrolet Corvette75 lbs594-1152003-01 V8-5.7L (350cid) Vin G & S

Chevrolet Corvette240 lbs594-1161995-90 V8-5.7L (350cid) Vin J

Chevrolet Corvette148 lbs594-1171990-68 V8-5.7l (350cid), 6.6L (403), 7.5L (455cid) GM Buick, Cadillac, Oldsmobile, Pontiac; 1990-87 V8-5.0L (307cid) Cadillac Fleetwood (Vin 9) 70 lbs594-1182003-02 L4-2.0L (122cid) Ford Escort, Focus Vin P66lbs594-1192000 V10-6
torque specifications chevy 350 intake
.8l (415cid) Ford Truck Series E & F Super Duty, Excursion66 lbs594-1202002-95 V6-2.5L (2497cc) Mazda 626, Millenia122 lbs594-1212002-96 V8-5.7L (350cid) GM Truck, Cadillac Escalade; 1997 V6-4.3L (262cid) Vin W GMC G25/2500 Van43 lbs594-1222003-96 V6-3.8L (231cid) Buick Park Avenue, Regal, Riviera; Oldsmobile LSS; Pontiac Bonneville, Grand Prix111 lbs594-1231995-93 V6-3.2L (195cid) Ford Taurus113-126 ft lb594-1242003-95 V8-7.3l (445cid) Ford Truck E Super Duty/350; F Series 250, 350, 450; F59 Stripped212 lbs594-1252003-95 V6-3.0L (182cid) Ford Taurus; Ford Truck Aerostar, Ranger, Windstar; Mercury Sable35 lbs594-1272002-98 V8-5.7L (350cid) Chevrolet Camaro; Pontiac Firebird240 lbs594-1281993-82 V8-6.2L (379cid); V8-6.5L (395cid) Chevrolet/GMC Truck Suburban, P Series, C,K,R,V Series; Blazer, Jimmy (Diesel)200 lbs594-1292003-99 H4-2.0L (1994cc); H4-2.2L (2212cc) Subaru Impreza, Legacy Outback 177 nmDorman # cyl., 3.8L GM Full Size Passenger Car w/

Supercharge110 lbs + 76 dgrs594-1621993-97 Honda Passport, Isuzu Rodeo123 lbs594-1641989-94 V6-3.0L, 2972cc Mitsubishi Montero, Mighty Max108-116 lbs594-1662002-98 H4-2.5L, Subaru, Forester, Impreza, Legacy22 lbs594-1681994-90 L4-1.8L, Plymouth Laser, Mitsubishi Eclipse2003-96 V6-262; 4.3L Chevrolet Blazer, Bravada, 1500 PU, Chev./GMC Van, Envoy, S10,S1543 lbs2001-93 6 Cyl-230; 3.2L/3.5L CHY:300M, Concord, Intrepid, LHS, New Yorker, Prowler, Vision70 lbs2003-95 1.8L/2.0L 4 CYL MAZDA: Mazda 626, Protg69-95 lbs2002-00 L4-2.0L

CHY/PLY: Neon, PT Cruiser100 lbs2000-95

6-153; 2.5L

CHY/DODGE Cirrus, Sebring, Stratus134 lbs2003-97 8cyl-280, 4.6L FORD Truck Expedition, F150-250, E150-25089 lbs2002-99 V8-287, 4.7L; Chrylser: Jeep, Dodge Truck130 lbs1997-95 4 CYL MAZDA

Mazda

626 (Manual Trans.)na1997-94

V8-281, 4.6L ; GM: Cadillac Concord, Develle; Oldsmobile Aurora37 lbs.
350 ho long block specs
PERFORMANCE350 HO Engine (12486041) Specifications

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OF6200 Grand Pointe Drive, Grand Blanc, MI

48439dissimilarities between the 350 HO engine assembly and previous versions of the small block V-8.In general, items such as motor mounts, accessory drives, exhaust manifolds, etc.can be transferredengine and an older small block V-8 engine.These differences may require modifications or additional components not included withPERFORMANCE350 HO Engine (12486041) Specifications

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OF6200 Grand Pointe Drive, Grand Blanc, MI

48439engine.

It is not intended to replace the comprehensive service manuals and parts catalogs which coverPackage contents:1Engine - Rob SmithPERFORMANCE350 HO Engine (12486041) Specifications

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OF6200 Grand Pointe Drive, Grand Blanc, MI

48439Displacement:350 Bore x Stroke:4.00 inch x 3.48 inchCompression9.1:1Block:Cast iron, four-bolt intermediate mainsCylinder Head:Cast iron, 23 valve anglet):1.94/1.50Chamber Volume:64ccCrankshaft:Nodular iron, 1 piece rear sealConnecting Rods:Forged, powdered metal, 3/8 boltsPistons:Cast Camshaft:Hydraulic flat tappetDuration:212 intake, 222 exhaust @.050 tappet liftCenterline:109 ATDC intake, 116 BTDC exhaustRocker Arm Ratio:1.5:1 (flat tappet)Timing Chain:Link Type Oil Pressure (Normal):40 psi @ 2000 RPMFuel:Premium unleaded - 92 (R+M/2)ne Speed:5700 RPMSpark Plugs:AC Delco part # R43LTSSpark Timing:10 BTDC @ 700 RPMAdditional parts that may be needed:A GM Performance Parts dual plane intake manifold Part number 12366573 is available for use on this engine.Theintake manifold was designed for use with raised intake ports and a standard flange Holley carburetor.This intakemanifold does not have provisions for an exhaust gas recirculation (EGR) valve or a hot air choke.This manifold hasthe 1996-1998 Vortec style 8 bolt mounting pattern.PERFORMANCE350 HO Engine (12486041) Specifications

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OF6200 Grand Pointe Drive, Grand Blanc, MI

48439Several different water pumps are available for the 350 HO engine:12496652Long style aluminum9440982Bolt, Long style aluminum14011012Short style aluminum454467Bolt, Short style aluminum12529305Long style cast iron9442012Bolt, Long style cast iron12532528Long style cast iron reverse turning 1996-1998 L3112552096Bolt, Long style cast iron reverse turning 1996-1998 L31Any small block engine, regardless of year, that uses Vortec heads, will require an external coolant bypass line from the intakemanifold to the 5/8" hose nipple on the water pump (passengers side).Suggested routing is from the 3/8 NPSF boss on intakemanifold to the water pump.that includes a magnetic pickup, a module, a coil, a rotor, and a cap.The HEIs large diameter cap minimizes arcing and cross-connectors and wires for the HEIs tachometer and 12 volt terminals.Mechanical HO Engine (12486041) Specifications

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OF6200 Grand Pointe Drive, Grand Blanc, MI

48439Like all small block V-8.

engines produced since 1986, the 350 HO engine has a 3.00 diameter flywheel flange bolt pattern.Smallblock V-8.engines produced from 1958 through 1985 had a 3.58 diameter flywheel flange bolt pattern.

This change in bolt circlediameter was made to accommodate a leak-resistant one-piece rear main seal.Due to revisions in the crankshaft design, a 350HO engine must have a counterweighted flywheel (or flexplate) for proper balance.Additional flywheels and flexplates are availablefrom the chart below.350 HO Engine - Manual Transmission 1408864612 3/410.4,11.0153Lightweight nodular 1408865012 3/410.4153Standard weight flywheel; for one-piece crank seal350 HO Engine - Automatic Transmission 3/410.75153For one-piece crank one-piece crank sealStarter:The starter must be matched to flywheel (or flexplate) diameter when installing a 350 HO engine assembly.Small diameterflywheels are 12 3/4 diameter, and have starter ring gears with 153 teeth.Large diameter flywheels are 14 in diameter, andhave 168 teeth on the starter ring gear.This difference in flywheel diameters requires two different starter housings.Starternoses used with 14 diameter flywheels have two offset bolt holes; starters used with 12 3/4

diameter flywheels have boltholes that are straight across from each other.Note: Chevrolet starter motors use special shouldered mounting bolts, which register the starter on the block.The following starters and hardware can be used with the 350 HO engine assembly:10496870PERFORMANCE350 HO Engine (12486041) Specifications

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OF6200 Grand Pointe Drive, Grand Blanc, MI

48439AC PF52Filter to fit adapter, spin-onfor the 350 HO engine.GM Performance Parts has a 600 cfm Holley four-barrel carburetor GM Part Number 12497147.

ThisThe 350 HO engine does not include a fuel pump.However, it does have a mechanical fuel pump boss.The fuel system mustbe capable of supplying adequate fuel volume at a minimum of 6 psi pressure when the engine is operating at Wide OpenThrottle (WOT).The following fuel pumps are available from GM Performance Parts.

High volume, in-line, electric fuel pumpPart number 25115899.

This heavy-duty pump flows 72 gallons per hour at 6-8 psi outlet pressure.Street performance pumpPart number 12355612.This pump can be used on all Chevrolet 283-400ci V-8 engines.The pump has a 7 psi shut off pressure,3/8-18 inlet and outlet ports and has a free flow rating of 110 gallons per hour.Competition pump Part number 12355613.

Thispump can be used on all Chevrolet 283-400ci V-8 engines.The pump has a 9 psi shut off pressure, 1/2"-14 inlet and outletports and has a free flow rating of 115 gallons per hour.Chrome street pump Part number 12355617.

This pump can be usedon all Chevrolet 283-400ci V-8 engines.The pump has 8.5 psi shut off pressure and has a free flow rating of 70 gallons
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