Essential 1985 Oldsmobile Cutlass Supreme Performance Engines

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$251.99

HYDRAULIC – Xtreme Energy: Great for street machines, largest cam for stock converter, better with 2000 stall.

Product Features:

HYDRAULIC – Xtreme Energy: Great for street machines, largest cam for stock converter, better with 2000 stall.
268/280 Advertised Duration, 224/230 Duration @ .050″, .477″/.480″ Lift, 110 Lobe Separation
Valve spring upgrade required
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

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$159.99

Complete kit includes retainers and locks. Springs made of highest quality spring wire. Springs precision wound to close tolerances. Includes superior quality steel retainers. Includes 7 degree heat-treated valve stem locks. Retainers and locks are black oxide coated. Non-rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.

Product Features:

Complete Kit: Includes Retainers And Locks
Springs Made of Highest Quality Spring Wire
Springs Precision Wound To Close Tolerances
Includes Superior Quality Steel Retainers
Includes 7 deg. Heat-Treated Valve Stem Locks
Retainers and Locks Black Oxide Coated
Non-Rotator Style: Dyno Tested and Street Proven
Great Match to Edelbrock Camshaft Kit

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$89.99

Mr. Gasket Ultra-Seal Head Gaskets are a five layer (graphite core/perforated steel outer layers) composite construction. The graphite core has excellent thermoconductivity (transfers heat) away from hot spots in head preventing gasket burn-out. They provide excellent stability, compressibility and high temperature endurance. A high temperature silicone coating ensures sealing of engine fluids. Compatible with cast iron or aluminum heads, they will not brinell (indent) aluminum cylinder heads. Suitable for high performance street, drag race and oval track use. Sold individually.brbrGasket Bore 4.230 inch, Compressed thickness 0.038 inch

Product Features:

Five layer (graphite core/perforated steel outer layers) composite construction
Graphite core has excellent thermo-conductivity-transfers heat away from hot spots in head preventing gasket burn-out
Provides excellent stability, compressibility and high temperature endurance
Coated with high temperature silicone to ensure sealing of engine fluids
Will not brinell (indent) aluminum cylinder heads
For high performance street, drag race and oval track use
Compatible w/High Octane Fuel
Compatible With Exotic Fuel

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$61.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.

Product Features:

Fel-Pro Performance head gaskets accommodate the high cylinder pressures and cylinder head movement associated with performance engines.
Inserted within a stainless steel armor surrounding each cylinder, wire ring design provides highly concentrated sealing around the combustion chamber.
Raises combustion sealing force to roughly three times that of standard head gaskets.
Steel wire rings for the greatest combustion seal strength.
Not intended for use in emission controlled vehicles.

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$75.99

These are high quality nuts with allen set screws to provide you with that positive lock needed for Race or original equipment Rocker Arms.

Product Features:

They Are Zinc Dichromate Plated Steel
They Have Black Oxide Coated Set Screws
Keeps Rocker Arms Positively Locked
(16) Rocker Arm Nuts w/ Locks 3/8″-24 Threads
Includes Locks and Hex Wrench
Shank O.D. .603″

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$433.99

These COMP Cams Ultra-Gold Aluminum Roller Rocker Arms with a 3/8″ stud diameter and 1.6 ratio are designed for Chevrolet V8 265-400 applications. The new modern design features of these Ultra-Gold Rockers are proven to withstand extremely aggressive spring pressure and valve lift. Designed specifically for high performance street and race engines, the Ultra-Gold Aluminum Rocker Arms are precision CNC-machined to strict tolerances. Developed to meet the demands of professional engine builders, these rockers include features never before possible in an aluminum rocker arm.

Product Features:

CNC-machined, lightweight design removes weight and yields unrivaled quality and ratio accuracy
Designed for high performance street and race engines
Precision-sorted trunion bearings withstand elevated valve spring pressure and valve lift
Additional clearance, up to 1.650″ O.D. valve spring

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$106.99

Product Features:

Use W/ Valve Springs Part #5822, 5882, 5896, 5872, 5867, 5812, 5857
Set of 16
1.50 in. Outside Diameter
Steel Material
Black Oxide Finish

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$10.99

10 Degree Superlock Steel Retainer for 1.250" OD Valve Spring

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$405.99

An older member of the COMP Cams grind family, the Magnum series of camshafts offers excellent performance gains over stock without the added wear and tear associated with more aggressive camshafts.

Product Features:

Best with aftermarket torque converters and 9.5:1 compression.
Great high RPM power.
Easy on valve train parts.
Can be used with mild ratio rocker arms and traditional performance valve springs.

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$390.99

SMALL BLOCK CHEVY HYDRAULIC CAM AND LIFTER KIT – Magnum: Pro Street/bracket, limited street driving. Intake, gears, 3500+ stall. Racy idle. 10.5:1 compression. OR Drag Race: 3500-4000 stall or 4 speed with 11:1+ compression.

Product Features:

Cam and lifter kit for Small Block Chevy engines
CL-Kit includes cam, lifters, assembly lube, instructions and decals
HYDRAULIC – Magnum: Pro Street/bracket, limited street driving. Intake, gears, 3500+ stall. Racy idle. 10.5:1 compression. OR Drag Race: 3500-4000 stall or 4 speed with 11:1+ compression.
305/305 Advertised Duration, 253/253 Duration @ .050″, .525″/.525″ Lift, 110 Lobe Separation
Valve spring upgrade required

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$26.99

Spectre’s Oldsmobile V8 water neck fits Oldsmobile 330, 350, 425 and 455 engines. This water neck has been designed around the OEM specifications and has a chrome plated finish for a lasting look that fits great. This water neck has an additional by-pass hose connection and includes the bolts.

Product Features:

Fits Oldsmobile 330, 350, 425 and 455 engines
Chrome plated
Bolts included
Designed for OEM fit
Easy to install
O-ring/gasket not included

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$32.49

Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.

Product Features:

Complete with o-rings and mounting bolts
Features an o-ring style seal to prevent water leaks
Chrome plated
1/2″ NPT port can be used for various coolant temp related sensors or switches

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$66.99

COMP Cams High Energy Timing Chain Sets include precision cast iron camshaft and crank gear sprockets and premium quality link belt type timing chain. These sets exceed all original equipment timing chain specifications and are ideal for stock replacement and mild performance applications.

Product Features:

Exceeds all original equipment timing chain specifications
Premium quality link belt type chain for exceptional durability; chain also available separately
Precision cast iron camshaft and crank gear sprockets
Ideal for stock replacement and mild performance applications

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$83.99

COMP Cams Hi-Tech Roller Race Timing Sets include cast iron camshafts gears, induction hardened billet steel crank sprockets, and pre-stretched, heat-treated double roller chains with heavy-duty large pin design. They feature 3 keyway crank sprockets for

Product Features:

Cast iron camshaft gear and induction hardened billet steel crank sprocket
Pre-stretched, heat-treated true double roller chain with heavy-duty large pin design; chain available separately
Ideal for all street performance and race applications
Features 3 keyway crank sprocket for 4-degree incremental adjustability, 4-degree maximum advance/retard
Dynamically balanced and quality checked for run-out tolerances

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$199.99

Product Features:

Case-Hardened Tubing
Welded Ends
5/16 in. Diameter
Use with or without Hardened Steel Guideplates

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$165.99

Magnum Pushrods from COMP Cams offer an affordable solution for your .080″ wall chromemoly pushrod needs. Designed to withstand the stresses of a high performance engine, Magnum Pushrods are head-treated for extended durability and have precision formed, reinforced ends. Magnum Pushrods are black-oxide finished with their part number and length laser etched onto the surface for easy identification.

Product Features:

3/8″ Diameter, 7.800″ Length
Magnum Pushrods for Small Block Chevy
One-piece .080″ wall chromemoly steel tubing
Heat-treated for extended durability and guide plate compatibility
Precision formed and reinforced pushrod end

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$32.49

Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:

Opens At 195 Degrees
Designed to Resist Large Variations of Coolant Pressure at High RPM
Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
For High Performance Street, Drag Race, and Oval Track
Copper & Brass Construction – Resists Corrosion
High Flow

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$49.99

Mr. Gasket Performance Intake Gaskets are manufactured from cellulose/nitrile composition gasket material. This is a low density material that conforms well to irregular surfaces and has very good crush resistance at high flange pressures. They provide excellent sealing and durability as the material is designed for sealing gasoline, oils, water and coolant in applications up to 350 degrees Fahrenheit. While die-cut for an excellent fit, they can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track.

Product Features:

Manufactured from cellulose/nitrile composition gasket material
Provides excellent sealing and durability
Die-cut for an excellent fit
Can be trimmed if necessary for modified port applications
For OE replacement, high performance street, drag race and oval track use

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$47.49

Mr. Gasket Performance Intake Gaskets are manufactured from cellulose/nitrile composition gasket material. They provide excellent sealing and durability. Can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track.

Product Features:

Manufactured from cellulose/nitrile composition gasket material.
Provides excellent sealing and durability.
Can be trimmed if necessary for modified port applications.
Complete with manifold end seals and distributor gasket.
For OE replacement, high performance street, drag race and oval track use.

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$13.99

High Energy Hydraulic Flat Lifter Chevrolet SBC, BBC, and 194-292/200-262 V6.

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$230.99

COMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive-stop Teflon seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The umbrella seal is normally used when a larger-than-stock diameter spring is used, in the case of a double spring, the positive-stop Teflon seal is used. The umbrella seals require no machining, but with the Teflon seal it is necessary to disassemble the heads and machine the top of the guide with a special .530 diameter cutter. Whenever you are planning an engine overhaul or a cam change, don’t forget the valve seals.

Product Features:

Work with stock guides and 11/32″ valve stem diameter
Valve stem oil seals keep unwanted oil from entering the combustion chamber
Several different types of valve seals are offered

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$223.99

Work with .530″ guides and 11/32″ valve stem diameter
Valve stem oil seals keep unwanted oil from entering the combustion chamber
Several different types of valve seals are offered

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$223.99

VALVE SEALS, O-RING 11/32″ 1 ST

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$749.99

Based on performer RPM-series with unique air gap. Air gap cooler and denser mixture for more power. Designed for 1500 to 6500 RPM. Dual-plane high-rise intake. For square bore carburetors only. For street and high performance use. Available in cast, polished or endurashine finish.

Product Features:

Polished Version Of Edelbrock PN[7501]
Polish is Hand-Buffed for Brilliant Shine
Based on Performer RPM-Series with Unique Air Gap
Air Gap Cooler and Denser Mixture for More Power
Designed for 1500 to 6500 RPM Street-Driven Power
Produces Incredible Top-End Horsepower
Retains Good Throttle Response and Acceleration
Larger Plenum and Runners Maximizes Other Upgrades

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$425.99

Race winning design for all types of competition. Single plane maximizes torque and horsepower. Runners feature extra material for custom porting. For performance in 3500 to 7500 RPM range. Low profile design helps minimal hood clearance. Can use 1 or 2 inch spacers to tune performance. Use PN(2999) where 1 inch spacers are not allowed. Best for standard port heads.

Product Features:

Race Winning Design for all Types of Competition
Single Plane Maximizes Torque and Horsepower
Runners Feature Extra Material for Custom Porting
For Performance in 3500 to 7500 RPM Range
Low Profile Design Helps Minimal Hood Clearance
Can Use 1 Or 2 in. Spacers To Tune Performance
Use PN[2999] Where 1 in. Spacers Not Allowed
Best for Standard Port Heads

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$379.99

Strip Dominator intake manifold square bore carburetor mounting flange. Single plane with isolated plenum. Isolated water cross-over.

Product Features:

Single Plane With Isolated Plenum
Square Bore Carburetor Mounting Flange
Isolated Water Cross-Over
Power Band 4500-7600 rpm
Height Front 5.11 in. Rear 5.97 in.
Port Size 2.05 in. Height 1.22 in. Width
No Exhaust Heat Crossover Provision
Ideal For Drag Cars w/Auto Trans.

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$18.99

Replacement gasket for top to bottom. See PN(7110) complete. PN(7067) bottom. PN(7032) top. Includes base and top for intake manifold PN(7110).

Product Features:

Replacement Gasket for Top to Bottom
See PN[7110]Complete; PN[7067]Bottom; PN[7032] Top

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$487.99

Product Features:

For Idle to 5500 RPM Street-Driven Performance
Dual-Plane Low-Rise Intake w/180 deg. Firing Order
Patented Runner Design Ensures Broad Torque Curve
Excellent Throttle Response and Mid-Range Power
50-State Street Legal if Correct Carburetor Used

FAQs for 1985 Oldsmobile Cutlass Supreme Performance Engines

What are the best-selling Performance Engines for 1985 Oldsmobile Cutlass Supremes?

Out of 34 Performance Engines that fit 1985 Oldsmobile Cutlass Supremes, the following parts are the top sellers:

High Performance Thermostat (22903641) – $32.49
Water Neck; Olds (22905408) – $26.99
Valve Seals, Umbrella 11/32" 1 St (10214929) – $230.99

What’s the price range for 1985 Oldsmobile Cutlass Supreme Performance Engines?

The prices of Performance Engines for the 1985 Oldsmobile Cutlass Supreme range from $7.99 up to $1,421.99 for the most premium parts.

What is the average price of a Performance Engine for a 1985 Oldsmobile Cutlass Supreme?

The average price for Performance Engines for the 1985 Oldsmobile Cutlass Supreme is $201.48. Keep in mind the variety of part types within our Performance Engine category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Performance Engines for other Oldsmobile Cutlass Supreme model years?

Yes, we carry Performance Engines for 28 model years of Oldsmobile Cutlass Supremes between 1967 and 1996. The following model years are the most popular for Performance Engine purchases: 1989, 1988, 1987, 1986, 1984, 1983, 1982, 1981, and 1980.

What are the cheapest Performance Engines for my 1985 Oldsmobile Cutlass Supreme?

The cheapest 1985 Oldsmobile Cutlass Supreme Performance Engines we carry are:

High Energy 8.500" Long, 5/16" Diameter Pushrod (50289696) – $7.99
Engine Valve Spring (50286657) – $9.99
7 Degree Steel Retainer for 11/32" Valve with 1.437"-1.500" Spring (50289120) – $10.99
Pro Magnum Hydraulic Flat Lifter for Oldsmobile 260-455 and Pontiac 326-455. (50286488) – $15.99
Magnum 7.850" Long, .080" Wall, 5/16" Diameter Pushrod (50289636) – $17.99

Does Advance Auto Parts sell Performance Engines for any other 1985 Oldsmobile models?

Yes. We stock Performance Engines for 8 other popular 1985 Oldsmobile models. Some of the most popular are 1985 98 Performance Engines, 1985 Delta 88 Performance Engines, 1985 Toronado Performance Engines, 1985 Custom Cruiser Performance Engines, and 1985 Cutlass Ciera Performance Engines.

What types of Performance Engines do you sell for my 1985 Oldsmobile Cutlass Supreme?

As of 3/1/26, these are some of the most in-demand types of Performance Engines for a 1985 Oldsmobile Cutlass Supreme:

Can I get help with 1985 Oldsmobile Cutlass Supreme Performance Engine orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Oldsmobile Performance Engines and more.

What is your return policy for Oldsmobile Cutlass Supreme Performance Engines?

Advance Auto Parts keeps returns simple. For new Oldsmobile Cutlass Supreme Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1985 Oldsmobile Cutlass Supreme Performance Engines

Competition Cams – Xtreme Energy 224/230 Hydraulic Flat Cam (Part No.12-242-2)

Edelbrock – Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95 (Part No.5794)

Mr. Gasket – Ultra Seal: Head Gasket (Part No.5788G)

FEL-PRO Performance – Performance Cylinder Head Gasket (Part No.1000)

Mr. Gasket – Ultra Seal: Sure-Lock Rocker Arm Nuts (Part No.920G)

Competition Cams – Rocker Arms, Ultra Gold Small Block Chevy 1.6 1 St (Part No.19002-16)

Edelbrock – Performer Series Retainer (Qty 16) (Part No.9724)

Competition Cams – 10 Degree Superlock Steel Retainer for 1.250" OD Valve Spring (Part No.750-1)

Competition Cams – Magnum 224/224 Hydraulic Flat Cam and Lifter Kit (Part No.CL42-308-4)

Competition Cams – Magnum/Drag Race 253/253 Hydraulic Flat Cam and Lifter Kit (Part No.CL12-214-4)

Spectre – Water Neck; Olds (Part No.4733)

Mr. Gasket – Water Neck (Part No.2557)

Competition Cams – High Energy Timing Set (Part No.3200)

Competition Cams – TIMING SET, HIGH TECH SMALL BLOCK CHEVY 1 EA (Part No.3100)

Edelbrock – Pushrod Set for S/B Chevy (Part No.9630)

Competition Cams – PUSHROD SET, SBC 3/8 1 ST (Part No.7513-16)

Mr. Gasket – High Performance Thermostat (Part No.4365)

Mr. Gasket – Intake Gasket (Part No.143)

Mr. Gasket – Intake Gasket (Part No.116)

Competition Cams – High Energy Hydraulic Flat Lifter Chevrolet SBC, BBC, and 194-292/200-262 V6. (Part No.812-1)

Competition Cams – Valve Seals, Umbrella 11/32" 1 St (Part No.502-16)

Competition Cams – VALVE SEALS, 11/32" TEFLON 1 ST (Part No.503-16)

Competition Cams – Valve Seals, O-Ring 11/32" 1 St (Part No.501-16)

Edelbrock – Performer RPM AIR-Gap Small Block Chevy Polished Intake Manifold (Part No.75011)

Edelbrock – Victor Jr. 23 Degree Intake Manifold Small-Block Chevy (Part No.2975)

Holley – Strip Dominator; Intake Manifold (Part No.300-25)

Edelbrock – Intake Manifold replacement base to top gasket (Part No.6999)

Edelbrock – Performer Small-Block Oldsmobile 350 EGR Intake Manifold (Part No.3711)

FEL-PRO Performance – Lower Intake Manifold Gasket Set: 3 Piece Set (Part No.1200)

Mr. Gasket – High Performance Thermostat (Part No.4365)

Edelbrock – Performer Small-Block Oldsmobile 350 EGR Intake Manifold (Part No.3711)

FEL-PRO Performance – Performance Cylinder Head Gasket (Part No.1000)

Spectre – Water Neck; Olds (Part No.4733)