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Chevy 350 ci Long Block Engine Assembly

Is your current Chevy 350 ci motor tired and worn out? Have you noticed a drop in horsepower and are concerned that your motor will not make the next ¼ mile run? Then a Proformance Unlimited Chevy 350 ci long block engine is exactly what you need! Both highly customizable and dependable, it is no surprise that our 350 ci long block motor is one of our best selling engines.

With a large selection of aftermarket parts to choose from, your Chevy 350 ci long block can be built to provide you with the amount of horsepower and torque that you desire. If you are looking for an affordable and respectable engine to put into your daily driver then our Chevy 350 ci long block rated at 270 HP may be the choice for you. However, if you want to instill some fear into your Ford loving friends then our 350 ci turn-key long block engine rated at 475 HP is what you want!

From custom painted engine blocks to our exclusive March Performance serpentine belt system, Proformance Unlimited can supply you with the long block motor that you have dreamed of and others fear! With over 50 years of shop experience, you can rest assured that we are here to help design and build the engine combination that best suits your vehicles needs. Unlike our competition, we stand by our long block motors with a one year, unlimited mile warranty.

Chevy 350 ci Long Block Engine Assembly Options

350 ci Long Block - 270 HP
350 ci Long Block - 295 HP
350 ci Long Block - 320 HP
350 ci Long Block - 335 HP
350 ci Long Block - 350 HP
350 ci Long Block - 375 HP
350 ci Long Block - 420 HP
350 ci Long Block - 440 HP
350 ci Long Block - 475 HP



350 ci Long Block Assembly - 270 HP

Short Block Specs:
Seasoned Factory Roller 4 Bolt Main Block w/ 1 or 2 Piece Rear Main Seal Bored & Honed .030 w/ Deck Plate Mains Align Honed Block Decked .020 Dura Bond Cam Bearings	Brass Freeze Plug & Oil Galley Kit Block Painted Color of Your Choice Scat Cast Steel Crankshaft Clevite P Series Rod & Main Bearing	Scat I-Beam Connecting Rods w/ ARP Rod Bolts Speed-Pro or Keith Black Pistons Hastings Hand Filed Performance Rings Complete Rotating Assembly will be Balanced

Long Block Specs:
Includes Everything Above Plus: Custom Ground Hydraulic Flat Tappet High Performance Street Camshaft Anti-Pump Up High Rev Lifters Polished Aluminum Edelbrock Performance RPM Cylinder Heads Stainless Steel 2.02 Intake Valves	Stainless Steel 1.60 Exhaust Valves High Performance Valve Springs & Retainers 7/16 Screw-In Studs & Hardened Guide Plates Chrome Moly Push Rods Performance Stainless Steel Roller Rockers	High Volume Oil Pump & Screen Polished Aluminum Finned Oil Pan¹ Chrome Dip Stick & Tube Polished Aluminum Timing Cover Fel-Pro Performance Gaskets
We document in detail the assembly of your long block motor. We provide you with pictures that were taken during the assembly of your custom built engine to document the quality of parts and workmanship that went into your motor.
¹ Rear & Double Sump Oil Pan - Additional $150
Chevy 350 ci Long Block Engine Assembly



350 ci Long Block Assembly - 295 HP

Short Block Specs:
Seasoned Factory Roller 4 Bolt Main Block w/ 1 or 2 Piece Rear Main Seal Bored & Honed .030 w/ Deck Plate Mains Align Honed Block Decked .020 Dura Bond Cam Bearings	Brass Freeze Plug & Oil Galley Kit Block Painted Color of Your Choice Scat Cast Steel Crankshaft Clevite P Series Rod & Main Bearing	Scat I-Beam Connecting Rods w/ ARP Rod Bolts Speed-Pro or Keith Black Pistons Hastings Hand Filed Performance Rings Complete Rotating Assembly will be Balanced

Long Block Specs:
Includes Everything Above Plus: Custom Ground Hydraulic Roller High Performance Street Camshaft Roller Lifters Lift Guides GM Roller Lifter Retainer Tray Polished Aluminum Edelbrock Performance RPM Cylinder Heads	Stainless Steel 2.02 Intake Valves Stainless Steel 1.60 Exhaust Valves High Performance Valve Springs & Retainers 7/16 Screw-In Studs & Hardened Guide Plates Chrome Moly Push Rods Performance Stainless Steel Roller Rockers	Three Piece True Double Roller Timing Set High Volume Oil Pump & Screen Polished Aluminum Finned Oil Pan¹ Chrome Dip Stick & Tube Polished Aluminum Timing Cover Fel-Pro Performance Gaskets
We document in detail the assembly of your long block motor. We provide you with pictures that were taken during the assembly of your custom built engine to document the quality of parts and workmanship that went into your motor.
¹ Rear & Double Sump Oil Pan - Additional $150
Chevy 350 ci Long Block Engine Assembly



350 ci Long Block Assembly - 320 HP

Short Block Specs:
GM 4 Bolt Main Block Block Painted Color of Your Choice GM 350 Crankshaft	GM Performance I-Beam Connecting Rods GM Cast Aluminum Pistons	Hand Filed Performance Rings Complete Rotating Assembly will be Balanced

Long Block Specs:
Includes Everything Above Plus: Hand Selected High Performance Camshaft Lifters GM Cast Iron Cylinder Heads Chrome Moly Push Rods	GM Rocker Arms w/ 1.5 Ratio Three Piece True Double Roller Timing Set High Volume Oil Pump & Screen Painted Oil Pan¹	Chrome Dip Stick & Tube Painted Timing Cover GM Harmonic Balancer OEM Gaskets
We document in detail the assembly of your long block motor. We provide you with pictures that were taken during the assembly of your custom built engine to document the quality of parts and workmanship that went into your motor.
¹ Rear & Double Sump Oil Pan - Additional $150
Chevy 350 ci Long Block Engine Assembly



350 ci Long Block Assembly - 335 HP

Short Block Specs:
GM 4 Bolt Main Block Block Painted Color of Your Choice GM 350 Crankshaft	GM Performance I-Beam Connecting Rods GM Cast Aluminum Pistons	Hand Filed Performance Rings Complete Rotating Assembly will be Balanced

Long Block Specs:
Includes Everything Above Plus: Hydraulic Roller High Performance Street Camshaft Roller Lifters GM Cast Iron Cylinder Heads	Chrome Moly Push Rods GM Rocker Arms w/ 1.5 Ratio Three Piece True Double Roller Timing Set High Volume Oil Pump & Screen	Painted Oil Pan¹ Chrome Dip Stick & Tube Painted Timing Cover Fel-Pro Gaskets
We document in detail the assembly of your long block motor. We provide you with pictures that were taken during the assembly of your custom built engine to document the quality of parts and workmanship that went into your motor.
¹ Rear & Double Sump Oil Pan - Additional $150
Chevy 350 ci Long Block Engine Assembly



350 ci Long Block Assembly - 350 HP

Short Block Specs:
GM 4 Bolt Main Block Block Painted Color of Your Choice GM 350 Crankshaft	GM Performance I-Beam Connecting Rods GM Cast Aluminum Pistons	Hand Filed Performance Rings Complete Rotating Assembly will be Balanced

Long Block Specs:
Includes Everything Above Plus: Hand Selected Performance Street Camshaft Roller Lifters GM Cast Iron Cylinder Heads Chrome Moly Push Rods	GM Rocker Arms w/ 1.5 Ratio Three Piece True Double Roller Timing Set High Volume Oil Pump & Screen Chrome Oil Pan¹	Chrome Dip Stick & Tube Chome Timing Cover OEM Gaskets GM Harmonic Balancer
We document in detail the assembly of your long block motor. We provide you with pictures that were taken during the assembly of your custom built engine to document the quality of parts and workmanship that went into your motor.
¹ Rear & Double Sump Oil Pan - Additional $150
Chevy 350 ci Long Block Engine Assembly



350 ci Long Block Assembly - 375 HP

Short Block Specs:
Seasoned Factory Roller 4 Bolt Main Block w/ 1 or 2 Piece Rear Main Seal Bored & Honed .030 w/ Deck Plate Mains have been Align Honed Block has been Decked .020 Dura Bond Bearing Installed	Brass Freeze Plug & Oil Galley Kit Block Painted Color of Your Choice Scat Steel Crankshaft Scat I-Beam Connecting Rods w/ ARP Bolts	Speed-Pro or Keith Black Pistons Clevite P Series Rod & Main Bearing Hastings Hand Filed Performance Rings Complete Rotating Assembly will be Balanced

Long Block Specs:
Includes Everything Above Plus: Custom Ground Performance Camshaft Anti-Pump Up High Rev Lifters PBM Performance Aluminum Cylinder Heads Stainless Steel 2.02 Intake Valves Stainless Steel 1.60 Exhaust Valves	High Performance Valve Springs & Retainers 3/8 Screw-In Studs & Hardened Guide Plates Chrome Moly Push Rods Performance Roller Tip Rockers Three Piece True Double Roller Timing Set	High Volume Oil Pump & Screen Chrome Oil Pan¹ Chrome Dip Stick & Tube Chome Timing Cover Fel-Pro Performance Gaskets
We document in detail the assembly of your long block motor. We provide you with pictures that were taken during the assembly of your custom built engine to document the quality of parts and workmanship that went into your motor.
¹ Rear & Double Sump Oil Pan - Additional $150
Chevy 350 ci Long Block Engine Assembly



350 ci Long Block Assembly - 420 HP

Short Block Specs:
Seasoned Factory Roller 4 Bolt Main Block w/ 1 or 2 Piece Rear Main Seal Bored & Honed .030 w/ Deck Plate Mains have been Align Honed Block has been Decked .020 Dura Bond Bearing Installed	Brass Freeze Plug & Oil Galley Kit Block Painted Color of Your Choice Scat Steel Crankshaft Scat I-Beam Connecting Rods w/ ARP Bolts	Speed-Pro or Keith Black Pistons Clevite P Series Rod & Main Bearing Hastings Hand Filed Performance Rings Complete Rotating Assembly will be Balanced

Long Block Specs:
Includes Everything Above Plus: Custom Ground Performance Camshaft Roller Lifters Lifter Guides GM Roller Lifter Retainer Tray Dart or Edelbrock Aluminum Cylinder Heads	Stainless Steel 2.02 Intake Valves Stainless Steel 1.60 Exhaust Valves High Performance Valve Springs & Retainers 3/8 Screw-In Studs & Hardened Guide Plates Chrome Moly Push Rods PBM Performance True Aluminum Roller Rockers	Three Piece True Double Roller Timing Set High Volume Oil Pump & Screen Chrome Oil Pan¹ Chrome Dip Stick & Tube Chome Timing Cover Fel-Pro Performance Gaskets
We document in detail the assembly of your long block motor. We provide you with pictures that were taken during the assembly of your custom built engine to document the quality of parts and workmanship that went into your motor.
¹ Rear & Double Sump Oil Pan - Additional $150
Chevy 350 ci Long Block Engine Assembly



350 ci Long Block Assembly - 440 HP

Short Block Specs:
Seasoned Factory Roller 4 Bolt Main Block w/ 1 or 2 Piece Rear Main Seal Bored & Honed .030 w/ Deck Plate Mains have been Align Honed Block has been Decked .020 Dura Bond Bearing Installed	Brass Freeze Plug & Oil Galley Kit Block Painted Color of Your Choice Scat Steel Crankshaft Scat I-Beam Connecting Rods w/ ARP Bolts	Speed-Pro or Keith Black Pistons Clevite P Series Rod & Main Bearing Hastings Hand Filed Performance Rings Complete Rotating Assembly will be Balanced

Long Block Specs:
Includes Everything Above Plus: Custom Ground Hydraulic Roller Performance Camshaft Roller Lifters Dart or Edelbrock Aluminum Cylinder Heads Stainless Steel 2.02 Intake Valves Stainless Steel 1.60 Exhaust Valves	High Performance Valve Springs & Retainers 7/16 Screw-In Studs & Hardened Guide Plates Chrome Moly Push Rods Performance True Aluminum Roller Rockers Three Piece True Double Roller Timing Set	High Volume Oil Pump & Screen Chrome Oil Pan¹ Chrome Dip Stick & Tube Chome Timing Cover Fel-Pro Performance Gaskets
We document in detail the assembly of your long block motor. We provide you with pictures that were taken during the assembly of your custom built engine to document the quality of parts and workmanship that went into your motor.
¹ Rear & Double Sump Oil Pan - Additional $150
Chevy 350 ci Long Block Engine Assembly



350 ci Long Block Assembly - 475 HP

Short Block Specs:
Seasoned Factory Roller 4 Bolt Main Block 2 Piece Rear Main Seal Bored & Honed .030 w/ Deck Plate Mains have been Align Honed Block has been Decked .020 Dura Bond Bearing Installed	Brass Freeze Plug & Oil Galley Kit Block Painted Color of Your Choice Scat Steel Crankshaft Scat I-Beam Connecting Rods w/ ARP Bolts	Speed-Pro or Keith Black Pistons Clevite P Series Rod & Main Bearing Hastings Hand Filed Performance Rings Complete Rotating Assembly will be Balanced

Long Block Specs:
Includes Everything Above Plus: Custom Ground Hydraulic Roller Performance Camshaft Roller Lifters Dart or Edelbrock Aluminum Cylinder Heads Stainless Steel 2.02 Intake Valves Stainless Steel 1.60 Exhaust Valves	High Performance Valve Springs & Retainers 7/16 Screw-In Studs & Hardened Guide Plates Chrome Moly Push Rods Performance True Aluminum Roller Rockers Three Piece True Double Roller Timing Set	High Volume Oil Pump & Screen Chrome Oil Pan¹ Chrome Dip Stick & Tube Chome Timing Cover Fel-Pro Performance Gaskets
We document in detail the assembly of your long block motor. We provide you with pictures that were taken during the assembly of your custom built engine to document the quality of parts and workmanship that went into your motor.
¹ Rear & Double Sump Oil Pan - Additional $150
Chevy 350 ci Long Block Engine Assembly

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Proformance Unlimited Inc.
17B Jackson Street
Freehold, NJ 07728

Toll-free: 1-800-267-3940
Phone: 1-732-462-7283
Fax: 1-732-462-7202

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Chevy 350 ci Long Block Engine Assembly Options

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