The Chevrolet 383 Stroker was never actually produced in a factory, it is an aftermarket engine based on a General Motors Chevrolet engine specifically designed for hot rod enthusiasts, and there are kits for drivers that modify their cars to add some extra power.
The 383 Stroker engine is for Chevy chassis cars such as the classic Chevy Nova, and the Chevy Camaro, but will fit into any Chevy chassis if applied.
The 383 Stroker kit is based on a modified 350 block engine that has a Chevy 400 crankshaft that increases the stroke due to greater displacement.
The first Chevy 350 was fabricated in 1967, and it didn’t take a long time before enthusiasts realized it could be enlarged, and the first 383 Stroker engines appeared somewhere in the early 1970s.
Now, this might sound confusing; I originally stated that the 383 Stroker engine was never an OEM engine. Well, that’s true in a way, since Chevy never produced a car with a 383 engine in it. However, Chevy produces a 383 Stroker crate engines that can be bought online. So there is an OEM 383 Stroker engine that will save you time and energy from converting a 350 to a 383.
383 Stroker Performance Specs
The Chevy 383 Stroker crate engine provides you with 450 horsepower and 450 lb-ft of torque. Chevy recommends that you pair the engine with a Holley 4-barrel carburetor. Chevy considers that this will maximize performance enabling you to reach optimum specifications.
This engine’s displacement is 383 cubic inches (6.27L), which is due to the integrated 400 crankshaft and has a bore of 4 inches with 3.8 inches of stroke.
The block is made from cast iron while the head is a cast aluminum alloy. This is a very good combination since the iron is extremely rugged and has thermal properties that allow for higher combustion rates, while the head has excellent thermal conductivity characteristics that help cool the performance of the engine with other combined components.
The pistons are made from hyper eutectic aluminum that is connected to heavy-duty PM steel rods. The crankshaft is forged steel, and the valvetrain has a conventional camshaft with 1 intake and 1 exhaust valve per cylinder, giving it a total of 16 valves.
The Chevy 383 Stroker is an engine made by engine lovers that like to tinker with the engine and its components, constantly seeking ways to improve the overall performance, As such, the 383 Stroker crate kit is perfect for any hot rod enthusiast that likes to walk around with a tool belt.
Let’s take a look at two 383 Stroker crate kits.
GM Performance Parts – HT 383
The HT 383 small-block uses Vortec cylinder heads and gives you a 3.80-inch stroke crank to provide you with 400 ft-lbs of torque from 2,500 to 4,000 rpm. This version of 383 Stroker engine tops out at 415 ft-lb at 3,500rpm. The HT 383 comes with a torque-oriented roller cam, forged and powdered steel connecting rods, and a forged crank with hypereutectic pistons. The compression for 87-octane fuel is 9.1:1, and it produces 325 hp at 4,500 rpm.
The bore and stroke of this crate kit are 4.00-inch by 3.80-inch, and the cam lift is .594-inch Intake / .594-inch Exhaust. It comes with Edelbrock rpm E-TEC 200, 3/8-inch screw-in rocker studs and it has a maximum recommended RPM of 6,000.
The Chevrolet Performance Parts ZZ383
This model comes fully assembled and gives you 425 HP and delivers 460 lbs/ft of torque at 4,500 rpm. This model combines a 3.800 steel crank with a stout .509/.528 lift hydraulic roller camshaft.
The ZZ383 crate engines come in three color options, the classic stand out orange, a mean black finish and a hot rod shiny anodized option.
The power of this model is 425 hp at 5,400 rpm, 460 lbs/ft of torque at 4,500 rpm, and the bore is 4 inches with a 3.8-inch stroke.
The block is made of cast iron Block with Steel hydraulic roller tappet camshaft and aluminum head. The Cam Lift is.509-inch Intake / .528-inch Exhaust and the maximum RPM for this engine are also 6,000.