All Pricing is now out of date (2007) I will ship these engine overseas, but domestically you can buy them for less from a dealer than you can from me.
The Stroker Engine Company offers these GM Crate motors to provide a broad selection of engine options, and because they are great value.
This deluxe serpentine belt drive system with air conditioner includes all the components to install on small-block Chevrolet engines. With it's 4-Bolt main block and forged steel crankshaft The ZZ4 Partial Engine is a proven winner.
Add AFR 195cc Heads Comp Cams XE camshaft, a TPC Carb and Edelbrock RPM Air Gap Manifold MSD Distributor and Pre Started for a more powerful combination!!!! With more ZZZ through ZZ4 crate engines sold over the years than any other high performance crate engine, it only makes sense that GMPP would continue to improve that successful family of engines. This head can be used on any 1958-2000 283-400ci small block Chevrolet V8 engine with conventional water flow design but this head cannot be used on any LT1 LT4 or LS1 engines that are designed with reverse water flow. The all new 23 degree small block cylider head has the highest perfprmance potential of any 23 degree small block head developed by GM. The Fast Burn head combines new technologies with the best of GM motorsports and production cylinder head technologies. The name Fast Burn refers to the heads ability to quickly and completely burn the air furl mixture resulting in higher cylinder pressures and more power. Unlike the GM Performance Parts Bow Tie heads and most aftermarket performance heads this head requires no additional porting for maximum performance. The Fast Burn head accepts both center bolt and early style four bolt flange mount valve covers.
D shaped 78cc exhaust port and runners provide adequate flow for applications well in excess of 500hp. The 62cc fast burn combustion chambers - the most efficient ever to be incorporated on a GM Performance Parts cylinder head - produce higher cylinder pressures by burning more of the available fuel before the piston starts its power stroke downward. Total ignition timing to be used on a Fast Burn head will vary based on a number of factors but most configurations made the most power with 32 to 34 degree of total timing. This off-highway camshaft kit has the major valve train component to convert production LT1 engine for showroom stock racing, or hop up your small block Chevrolet V8 that was originally equipped with a roller tappet camshaft.
This Cylinder head assembly is identified by the Chevrolet "Bowtie" logo engraved on the end surface of the cylinder head, this replaces the "GM Performance Parts" logo that was formerly used. Head Gasket - must use head gaskets with stainless steel fire rings 809-10105117 or 809-12557236 used on Chevrolet Performance Engines. This Chevrolet Performance Small Block Chevy "Fast Burn" Aluminum Cylinder Head has the highest performance potential of any 23° small block head developed by Chevrolet using flat top pistons.
JEGS Easy Kits are designed by JEGS professionals to ensure that you get all the correct parts you need.
All cylinder heads are priced each!When it comes time to own the street, this is the head for you!GM Performance Parts has brought together all of our new technologiesto create the ultimate 23-degree small-block GM cylinderhead. The vortec type heads work VERY Well on engines that make 375 to 425 HP= For me, that is a mild street 350 engine. Your charts are near identical (ported) and spot on (stock) to what I got doing mine (The good 062 castings.)My ported peak intake flow was just a tad lower than yours. Hi CHW, very nice, thanks for posting these up, I too have had very good success with the Vortecs for street builds, they offer all the power and economy needed in a street machine. I don't make much money on these motors, nor do the dealerships that offer them at these low prices. With its 4-bolt main block, nodular iron crankshaft, forged steel connecting rods and light but strong cast aluminum pistons, this engine screams durability.
This enhancement to the Vortec headed 350HO makes it easier than ever to repower your street rod, street machine or sportsman racer.
What if it had a street roller camshaft, 4-bolt main block, 1053 forged steel crankshaft, high silicon pistons and strong PM connecting rods ?

Used as the foundation for thousands of ZZ4 and Fast Burn 385 engines and the legendary ZZ430 The ZZ4 Partial Engine has a long history of performance and durability.
The new Fast Burn 385 uses the proven ZZ4 shortblock and ads to it the Fast Burn aluminum cylinder heads for 385 value packed horsepower.
The only major items you will need to complete your engine are cam, lifters, cylinder heads, and manifold. GMPP starts with the legendary Fast Burn cylinder heads and 383cid, to offer an incredible 460 ft. The shape of the combustion chamber is designed to accomplish this Fast Burn with flat top pistons so flat top pistons are recommended with this cylinder head. This new technology removes material from other portions of the head allowing for considerably larger ports and water jacketing.
In the past the industry has added material to heads to allow substantial porting which can result in poor out of box perfprmance and additional cost. This head has taller than typical rocker cover rails providing exceptional clearance for rocker arms and valve train supports typically used in all out performance applications. Intake manifold mating surfaces are drilled and tapped for both Vortec and conventional raised port style manifolds.
Raising the top of the intake valves provides a better line of sight through the port and onto the back side of the intake valves. While additional porting is not recommended, light sanding to remove minor casting imperfections and polishing of combustion chambers and exhaust ports is acceptable. By more completely using available fuel, the engine produces more power per quantity of fuel. Uses all conventional low cost readily available 23 degree self-aligning rocker arms and valve train supports and hardware.If conventional non-self aligning rocker arms are used with guideplates rocker arm studs must be changed to 12495497(or equivelent) or else intererence will exist between the hex of the stud and the bottom of the rocker arm. The 1.6 roller rockers, light weight valve spring caps, special designed valve springs and hot camshaft offers a significant gain in horsepower at a reasonable price. This head is assembled using Chevrolet Performance "blue" beehive-style valve springs, part 809-12625033, using compatible spring retainers, seats and split key locks. Chevrolet Performance’s Fast Burn 23-degree cylinder heads deliver maximum performance for small-block engines.
Because I do not pay freight in these motors you need to figure adding $330 to the price to ship it out site the general Los Angeles Orange County area. Its forged LT4 powdered metal connecting rods and light flat top hypereutectic pistons ensure high RPM performance. With value in mind, the Fast Burn 385 uses stamped steel rocker arms and the same ZZ4 camshaft that powers thousands of hot rods. It is not recommended that the combustion chamber be modified or reshaped as this could decrease the efficiency of the chamber.
The Fast Burn head utilizes GM Performance Parts Cast-Ported technology which means that improvements in flow combustion and cylinder fill were incorporated into the machining tooling achieving maximum performance out of box. These components were changed to provide maximum durability and stability at the sustained RPM typically experienced in circle track racing. 62cc fast burn combustion chambers produce higher cylinder pressures by burning more of the available fuel before the piston starts its power stroke downward.
A new head casting – distinguished by new Chevy bowtie logos at each end – and new valvetrain with high-rpm, LS-style beehive-type valve springs stretches the performance range of the heads to enable greater power – including a 25-hp increase in our ZZ383 crate engine! The combustion chamber (62 cc) is designed for flattop pistons, and the head requires no additional porting for optimumperformance, so it provides maximum “out-of-the-box” performance.Recommended for any standard coolant flow 1955-2000 283-400cubic inch small-block, the Fast Burn head helps us make 425horsepower from our ZZ383 crate engine!Old part number 12464298. However, when you move the HP level up to 500 or more HP , the vortec can NOT keep up with say a small AFR head== At the 500 HP level, THe AFR head is going to be 50 or 60 HP better at high RPM. Dressed to impress with chrome valve covers and front timing cover, this engine will look great between the fenders of your favorite street rod, muscle car or grass roots racer. The ZZ4 is the evolution of our popular ZZ series of small blocks that power thousands of street rods, hot street cars, circle track racers and drag racers.

This head has taller than typical rocker cover rails, providing exceptional clearance for rocker arms and valve train supports typically used in all out performance applications. Head surfaces and rocker rails are CNC-machined to exact tolerances, thus eliminating the need for blueprinting. With over 400 Ft-Lbs of torque, the ZZ4 is the best way to put an aluminum head, roller cam, high performance small block between your favorite fenders.
Its strong forged steel crankshaft and forged powder metal connecting rods have been proven to 500 horsepower. Other ways to ajust compression ratio with the Fast Burn head include top of piston design and piston installed height. D-shaped ports and runners require no additional porting (but can be for all-out racing applications). Intake manifold, distributor, flywheel, harmonic balancer, water pump, and exhaust manifolds are not included. With GM Performance Part's lowest priced small-block crate engine there is no reason to rebuild that junk yard clunker and since it's complete from carb-to-pan there is no need to chase parts ! This cylinder head fits 1958-Present small block Chevy 283-400 engines with a conventional water flow design (cannot be used on LT1, LT4, or LS1 engine with reverse water flow).
The CNC-machined Fast Burn heads require no additional porting for optimal performance, so all you need to do is bolt them onto your small block and go! The 350 HO is not intended for marine use, and should only be used in 1973 and earlier pre-emissions street vehicles or any year off road vehicles. Also included are our lightweight valve spring retainers that weigh half as much as our previous design. 430 horsepower at 6000 RPM is achievable by adding the HOT cam and 1.6 ratio self aligning rocker arms. A dual-plane intake manifold can be used, but will affect overall peak performance numbers by 15-20 HP. They can be used on any small-block engine with at least 4.000-inch boresand the standard-flow coolant system. But with more lift and duration on the exhaust side, it does a better job of clearing exhaust from the combustion chamber.
The valve seats are radiused and we have included valve stem seals to help keep the oil where it belongs.
We also decreased the duration and lift ever so slightly on the intake side to build more cylinder pressure.
The combination makes 355 horsepower at 5250 rpm and has that great sounding muscle car idle, with just enough lope to let people know this is no station wagon engine. The Fast Burn 385 is not intended for marine use, and should only be used in 1973 and earlier pre-emissions street vehicles or any year off road vehicle.
Add the new dual plane intake manifold GM# 12366573, 600-650 cfm carburetor, HEI distributor, balancer, water pump and exhaust manifold or a pair of headers and you have an outstanding muscle motor with a broad, smooth torque curve and an honest 330 horsepower.
It even has the spark plugs in it when it was test fired at the factory for quality control checks. With a long history of successes in circle track and drag racing as well as street rods and other performance applications, the ZZ4 may just be the bullet for your next project. The ZZ4 is not intended for marine use, and should only be used in 1973 and earlier pre-emissions street vehicles or any year off road vehicle.
Technical Notes: Carb, plug wires, starter, oil filter and oil filter adapter, and exhaust manifolds not included.

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