Essential 1985 Oldsmobile Custom Cruiser Performance Engines

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$471.99

Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods.

Product Features:

Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
Best with aftermarket converters and more rear gear.
Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.

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$402.99

Ideal for use with mainly stock components like rocker arms, intake manifolds, cylinder heads, compression ratio, torque converters and rear gear ratios, the High Energy camshaft grind family is a great choice for street performance applications.

Product Features:

Good blend of efficiency and performance.
Perfect choice for performance street rebuilds.
Work well with mainly stock components such as rockers, manifolds, heads, compression, torque converters and gears.

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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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$13.99

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

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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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$199.99

Product Features:

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

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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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$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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$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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$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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$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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$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

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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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$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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$10.99

10 Degree Superlock Steel Retainer for 1.250" OD 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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$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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$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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$328.99

Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts,

Product Features:

Excellent performance in street carbureted applications.
More vacuum allows an increase in duration for improved performance and assists power brakes.
Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

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$226.99

Excellent performance in street carbureted applications.
More vacuum allows an increase in duration for improved performance and assists power brakes.
Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

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$226.99

HYDRAULIC – Magnum: Great for street machines. Needs 2200+ stall, headers and gears. Rough idle.

Product Features:

HYDRAULIC – Magnum: Great for street machines. Needs 2200+ stall, headers and gears. Rough idle.
280/280 Advertised Duration, 230/230 Duration @ .050″, .480″/.480″ Lift, 110 Lobe Separation
Valve spring upgrade required

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$258.99

HYDRAULIC – Xtreme Energy: Very strong mid-range torque and throttle response, 2200+ stall.

Product Features:

HYDRAULIC – Xtreme Energy: Very strong mid-range torque and throttle response, 2200+ stall.
274/286 Advertised Duration, 230/236 Duration @ .050″, .490″/.490″ Lift, 110 Lobe Separation
Valve spring upgrade required
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

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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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$297.99

Excellent performance in street carbureted applications.
More vacuum allows an increase in duration for improved performance and assists power brakes.
Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

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$350.99

Excellent performance in street carbureted applications.
More vacuum allows an increase in duration for improved performance and assists power brakes.
Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

FAQs for 1985 Oldsmobile Custom Cruiser Performance Engines

What are the best-selling Performance Engines for 1985 Oldsmobile Custom Cruisers?

Out of 29 Performance Engines that fit 1985 Oldsmobile Custom Cruisers, 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 Custom Cruiser Performance Engines?

The prices of Performance Engines for the 1985 Oldsmobile Custom Cruiser 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 Custom Cruiser?

The average price for Performance Engines for the 1985 Oldsmobile Custom Cruiser is $266.04. 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 Custom Cruiser model years?

Yes, we carry Performance Engines for 20 model years of Oldsmobile Custom Cruisers between 1971 and 1992. The following model years are the most popular for Performance Engine purchases: 1992, 1991, 1989, 1988, 1987, 1986, 1984, 1983, and 1982.

What are the cheapest Performance Engines for my 1985 Oldsmobile Custom Cruiser?

The cheapest 1985 Oldsmobile Custom Cruiser Performance Engines we carry are:

High Energy 8.500" Long, 5/16" Diameter Pushrod (50289696) – $7.99
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
Flat 1 Piece Guide Plate Set for Olds 350-455 with 5/16" Pushrod and 5/16" Stud (50288852) – $24.99

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 Cutlass Supreme Performance Engines, 1985 98 Performance Engines, 1985 Delta 88 Performance Engines, 1985 Toronado Performance Engines, and 1985 Cutlass Ciera Performance Engines.

What types of Performance Engines do you sell for my 1985 Oldsmobile Custom Cruiser?

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

Can I get help with 1985 Oldsmobile Custom Cruiser 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 Custom Cruiser Performance Engines?

Advance Auto Parts keeps returns simple. For new Oldsmobile Custom Cruiser 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 Custom Cruiser Performance Engines

Competition Cams – Thumpr 226/241 Hydraulic Flat Cam and Lifter Kit (Part No.CL42-600-5)

Competition Cams – High Energy/Marine 218/218 Hydraulic Flat Cam/Lifter Kit (Part No.CL42-229-4)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Competition Cams – Xtreme Energy 224/230 Hydraulic Flat Cam (Part No.42-223-4)

Competition Cams – Xtreme Energy 206/212 Hydraulic Flat Cam (Part No.12-230-2)

Competition Cams – Magnum 224/224 Hydraulic Flat Cam (Part No.12-212-2)

Competition Cams – Xtreme Energy 230/236 Hydraulic Flat Cam (Part No.12-246-3)

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

Competition Cams – Xtreme Energy 240/246 Hydraulic Flat Cam (Part No.42-225-4)

Competition Cams – Xtreme Energy 218/224 Hydraulic Flat Cam (Part No.42-222-4)

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)

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

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

Competition Cams – ENG ROCKER ARM KIT (Part No.1441-KIT)

Competition Cams – ENGINE ROCKER ARM (Part No.1442-1)

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