SBC Chevy Hydraulic Roller Cam 383 Cubic Inch Pro Street Engine - 540 HP Street Rod Setup

Engine Features

• 📢 One-Year Warranty
• 10.95:1 compression ratio
  • Suitable for pump gas in light to medium weight cars with proper gearing.
• Forged 4.030 Bore Wiseco Pistons
• Scat 3.750 Stroke Crank (balanced in-house)
• SCAT Rods (6.0 or 5.7 inch)
• Wiseco Premium Forged Pistons (800HP+ rated)
• AFR Enforcer 200cc Aluminum-Alloy Heads
• Comp Cams Roller Camshaft
• Comp High-Energy Rockers (1.5 or 1.6 ratio)
• SA Gear Billet Timing Set with Torrington Bearing and Rolon Chain
• Scat Competition Rods w/ARP 2000 Cap Screws
• Melling M-Select Series Oil Pump w/ Select Drive Rod

This engine is designed for street/strip use, with an aggressive idle and tone, perfect for high-horsepower street rods.

⚠️ Not recommended for use with overdrive transmissions or steep gearing setups.

We also offer a de-tuned version of this engine with multiple cam and intake options. Search for "Stage 2.0 383" . Base-model, turn-key and serpentine-turn-key are available.

Pro-Street engines have less drivability than stock engines. They are not recommended for high-mileage, daily-driver (excess of 5000 miles per year).

These engines are setup for for the highest practical horsepower for Steet/Strip use. Aggressive idle and overall engine 'tone'. Not recommended for cars with overdrive transmissions and/or steep gears.

There are many upgrades in the "Pro Street" engines that our "Stage X" engines lack.

✔️ Test Run

We do a full test run on every engine we build on a test mule. The engine is run for two intervals of 15 minutes each, and every possible issue is addressed.

When you install the engine, you must verify that the timing is set at the correct value, and the fuel to air ratio must be verified. We also include an engine stand like the one pictured, wheels included, and an engine lift plate.

📊 Dyno Testing

We have a Super Flow 902S dyno . In the past, we outsourced our dyno work. We were unable to do the research and development we truly wanted, and this prompted us to once again make the large investment.

We couldn't be any happier with the decision! Every aspect of our engines can now be monitored, calibrated, and tuned. Best of all, we can now see what combos generate the best power, with consideration to drivability.

Please see our YouTube channel for thousands of dyno runs we've done on engines built in-house.

Our 383's are all built with a "4-bolt main caps".  They accept mechanical fuel pumps.

Machining Procedures

• Mains line-honed to factory specs
  • Many builders neglect this step and it can kill a motor!
• Bored and torque plate honed for precision
  • Very important as metal changes shape under load
• 1 pc. rear main seal

Rotating Assembly

The compression in this combo (w/flat-top pistons and AFR Enforcer heads) is about 10.95:1, suitable for pump gas in light to medium weight cars with proper gearing.

We inspect all the parts before polishing, honing, balancing to within 2 grams (or less) on our 3 CWT 5500 balancers . A balance sheet is included.

Crankshaft Specifications

• Genuine Scat Crankshaft
• 3.750" Stroke
• Cast Nodular Material
• Standard SBC Journal Diameter
• 2-Piece Rear Main Seal

Connecting Rod Specifications

• Genuine Scat Competition Series Rods
• 6.0" or 5.7" Length, Bronze Bushed
• Forged 4340 Alloy Material
• ARP 2000 Cap Screws

Piston & Ring Specifications

• Wiseco Fully Forged Pistons
• Flat Top, 4.030" Bore
• Mahle Moly Rings

Bearing, Damper, and Flexplate Specifications

• Clevite Main and Rod Bearings
• Pro-Race SFI Damper (6.61" Diameter)
• Heavy Duty SFI Flexplate
• Manual Trans Flywheels Available as Upgrade

Oil System

• Melling M-Select Oil Pump:
  • The M-Select series oil pump by Melling has several important upgrades compared to the regular Melling M-55 Series. The gears are billet steel, and the body is stronger, coated with corrosion-resistant nitrite.
  • 
• Melling M-Select Drive Rod
• ARP Stud
  • 
• Champ Premium Oil Pan with Oil Control System

AFR Enforcer Heads 64cc chamber w/200cc Runners

The AFR Enforcer heads have superior flow compared to Procomp/Speedmaster. The edge out Dart SHP heads on the intake side. The intake numbers are far more important than the exhaust. The overall average flow numbers on the AFR heads are higher than most any brand of non cnc'd cast aluminum heads on the market of an equal runner size.

Head Bolts

We use only ARP head bolts in this engine.

Head Gaskets

We use Fel-Pro 1003 "Premium Race Grade Series" gaskets.

Camshaft

COMP Cams SBC Xtreme Energy Step-Nose Camshaft for hydraulic rockers. Grind # 13459, part # 12-000-11321.

Lifters and Pushrods

We use Morel Tie Bar Lifters and .080" wall pushrods made by "Howards Cams".

Our choice of lifters are the Morel brand tie bar lifters. These lifters have many unique features. They greatly reduce valve float in the upper rpm range, and have a very quiet operation. These lifters sell for approx. $439 a set. They are a cut above the regular tie bar lifters on the market.

We use Howards brand premium pushrods in all of our engines. They are lightweight in design, yet very strong. Made in the USA 🇺🇸 from 4130 chromoly steel. Regular hardened pushrods will most likely flex in the engine when running above normal RPM ranges, and risk bending under high RPM. These do not have the welded ball on the end.

We only use the swedged one pc. design, which is a well proven design far superior to the style many others use in engines. 4130 chromoly steel is also much stronger, and will resist flexing. When a pushrod flexes in the engine, you lose lift.

Don't be misled by the term "hardened," as this is nothing more than a stock style low cost push rod. They will flex in the engine or possibly bend permanently.

Roller Rockers

Comp Cams High Energy Aluminum Roller Rockers are included.

The engine also includes ARP rocker studs.

⚠️ If you've read our warning on engine builders using low grade no-name rods and cranks, a similar situation exists in the roller rocker market.

We do not use or sell non branded, (no-name) roller rockers, period. They have proven to be faulty in many ways. The center trunnions are not polished, nor is the center of the roller tip true to size or polished.

Metal fragments are often left inside the trunnion housing and will cause destruction of the needle bearings. The pins and keepers that hold the parts together are often of poor quality and improperly installed. The front roller will usually scoot along the valve tip, as it can't roll properly due to rough internal surfaces.

We have honestly seen valve tips that were scalloped out due to the front roller dragging across them. This will cause the valves to side-load against the valve guides in the heads and surely cause damage to them if run like this for very long.

We use Comp High Energy, Comp Ultra Pro Magnum, Comp Gold Arc, Scorpion Race and Endurance Series rockers in all of our engines. The difference in these compared to the low grade no-name rockers on the market is huge.

Intake Manifold and Hardware

The single-plane intake included with this engine is for light-weight vehicles with adequate hood-clearance. We use 304 stainless-steel "cap-screws" on all of our engines:

A clear aluminum finish is included.

Black finish is available for $49 upgrade:

Valve Covers

You can select from a variety of valve covers at no additional cost:

Satin is very popular:

Or you might prefer the "retro finned" style:

If you're looking for shiny, we've got those too (note camera person hand as a reflection

"Champ" Premium 5 or 7 Quart Oil Pan

⚠️ If you choose the 7 qt. Champ oil pan, it has kickouts that swell outward approx. 3 inches on each side. If you think you will encounter clearance issues with the kickouts, we recommend the the stock appearing 5 qt. oil pan.

7qt pan:

The 5 qt. pan will still be a Champ pan and will have the windage tray and crank scraper. We strongly recommend reducing the amount of oil used in these oil pans by approx. 1/4th of a quart. Doing this may reduce the chance of oil leaks and reduce oil temps. The larger counter weights used on stroker crankshafts are why we recommend reducing the oil capacity in these engines.

To be clear on what we're saying, we would like to see you add right at 6.75 quarts of oil grand total in your engine and oil filter when using the higher capacity oil pan.

When using the stock appearing oil pan, we would like to see you add right at 4.75 quarts grand total in your engine and oil filter.

Inside view of baffle:

We use only genuine Fel-Pro gaskets, correct for the application. Fel-Pro gaskets are high-quality. Last thing you want is oil dripping from your brand-new engine!

Dipstick "Jimmy"!

🚨 Our engines include a dipstick. It's very important that you re-calibrate the oil level marking on the dipstick. This is due to the fact that the dipstick, oil pan, and block are all made from various manufacturers and we often see great variances.

Couple this with the fact that you may be running a reduced amount of oil, and the "full" mark on the dipstick will most likely not indicate correctly.

Once you have put a predetermined amount of oil in your engine, and run it for a few minutes, let it sit for awhile on level ground, check the oil, and mark your dipstick with a flat file to re-establish the full mark.

Studs and Mini-Nuts

We use our premium studded mini nut set on all of our oil pans and valve covers. The nuts have a serrated face and built in washers. This is the ultimate set for securing the oil pan and valve covers to the engine and is far superior to the typical bolts used by most other engine builders.

Our standard engine color is black. Custom paint work on engine blocks and oil pans is available as an optional upgrade. The pictures above and below are file photos to display the studded mini nuts. Other items seen in these pictures may not represent your actual engine.

Studs/Mini-Nuts:

From the side:

From Below:

🚛 Transport  / 👨‍🔧 Installation

We include an engine lift plate and heavy duty engine stand with casters with every engine we build.

We have packed and shipped thousands upon thousands of engines over the years. Our warehouse experts pack your engine in a crate, and send it fully insured.

If for any reason you needed to ship /transport your engine, the crate is re-usable.

⚠️ Since the engines ship freight, you'll need a dock or fork lift. Residential delivery via "lift-gate" is available, contact us for a quote.

📍 If you happen to be near Kingsport, Tennessee, you can save some money and time by picking up your engine from our shop. We'd enjoy giving you a tour while you're here.

Note regarding Ignition System:

If you do choose to purchase our 383 Pro Street engine, it is highly recommended that you upgrade the ignition system to an MSD Pro Billet distributor and CDI unit. These important upgrades are essential for improved tuning, idling and overall performance.

If you do decide to use the MSD Pro Billet distributor, we suggest you use the black timing degree bushing to increase the initial timing and possibly the lighter springs to control how soon the mechanical advance comes in.

You may even "lock-out" the distributor, depending on your car's overall setup.

The CDI unit will make a huge improvement in how the engine runs at idle and low speed cruising, as well as high rpm operation.

Water Pump and Accessories

This engine doesn't include a water pump or any accessories. Please see our catalog for other parts you might need, or contact our sales team.