Name: Ultra Seal: Sure-Lock Rocker Arm Nuts
Brand: Mr. Gasket
SKU: 920G
Price: 75.99 USD

Essential 1985 Buick LeSabre Performance Engines

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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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$223.99

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 .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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$33.99

Work with .530″ guides and 3/8″ 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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$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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$13.99

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

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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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$44.99

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

Product Features:

DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
SEALING TECHNOLOGIES — Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
ENGINEERING EXPERTISE — Parts are designed, reviewed, validated and approved by Fel-Pro engineers through rigorous research and development
REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted

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$34.99

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

Product Features:

DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
SEALING TECHNOLOGIES — Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
ENGINEERING EXPERTISE — Parts are designed, reviewed, validated and approved by Fel-Pro engineers through rigorous research and development
REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted

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$298.99

HYDRAULIC – Xtreme Energy: High performance street, very strong mid-range, headers and 2200+ stall.

Product Features:

HYDRAULIC – Xtreme Energy: High performance street, very strong mid-range, headers and 2200+ stall.
274/286 Advertised Duration, 230/236 Duration @ .050″, .488″/.491″ Lift, 110 Lobe Separation
Valve spring upgrade required
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

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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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$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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$149.99

Product Features:

Non-Rotator Type
1.550 in. Outer Diameter
.190 Wire Size
Single Coil Spring Type
Set of 16

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$898.99

SMALL BLOCK CHEVY HYDRAULIC CAM AND LIFTER KIT – High Energy: Good street performance with stock converter, choppy idle. OR High Energy Marine: Biggest cam for inboard/outboard. Good for ski, economy and light performance.

Product Features:

Cam and lifter kit for Small Block Chevy engines
CL-Kit includes cam, lifters, assembly lube, instructions and decals
HYDRAULIC – High Energy: Good street performance with stock converter, choppy idle. OR High Energy Marine: Biggest cam for inboard/outboard. Good for ski, economy and light performance.
268/268 Advertised Duration, 218/218 Duration @ .050″, .454″/.454″ Lift, 110 Lobe Separation
Valve spring upgrade required

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$1201.99

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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$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

11 Steel Retainer for Buick 350-455 with 1.225"-1.250" OD Valve Spring

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$10.99

10 Degree Superlock Steel Retainer for 1.250" OD Valve Spring

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$44.99

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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$51.99

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

Product Features:

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$42.49

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

Product Features:

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$12.99

Spectre’s Chevrolet V8 water neck fits 1966 – 1995 Chevy V8 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 includes bolts.

Product Features:

Fits 1966 – 1995 Chevy V8 engines
Includes bolts
Chrome plated
Designed for OEM fit
Easy to install
O-ring/gasket not included

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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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$49.99

With Mr. Gasket cam degree bushings you fine tune the camshaft timing of your engine to as little as 1 degree. Even aftermarket timing sets with multiple keyways can’t give the range of adjustment these bushings allow. Retard your camshaft to lower the powerband for more low end torque and midrange horsepower, or advance for more top end power. This kit does even number adjustment 0-8 degrees.

Product Features:

Advance the cam for increased torque and horsepower
Tune your powerband for more end torque or increase top end horsepower
Includes (4) offset bushings and (1) 0 degree bushing
Cam sprocket dowel pin hole must be drilled to .406¿ (13/32¿) dia.
Cam sprocket dowel pin hole must be drilled to .406┐ (13/32┐) dia.
Increase Top-End Horsepower

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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

FAQs for 1985 Buick LeSabre Performance Engines

What are the best-selling Performance Engines for 1985 Buick LeSabres?

Out of 38 Performance Engines that fit 1985 Buick LeSabres, 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 Buick LeSabre Performance Engines?

The prices of Performance Engines for the 1985 Buick LeSabre 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 Buick LeSabre?

The average price for Performance Engines for the 1985 Buick LeSabre is $268.32. 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 Buick LeSabre model years?

Yes, we carry Performance Engines for 40 model years of Buick LeSabres between 1964 and 2005. The following model years are the most popular for Performance Engine purchases: 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, and 1997.

What are the cheapest Performance Engines for my 1985 Buick LeSabre?

The cheapest 1985 Buick LeSabre 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 Buick models?

Yes. We stock Performance Engines for 5 other popular 1985 Buick models. Some of the most popular are 1985 Regal Performance Engines, 1985 Century Performance Engines, 1985 Skylark Performance Engines, 1985 Riviera Performance Engines, and 1985 Electra Performance Engines.

What types of Performance Engines do you sell for my 1985 Buick LeSabre?

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

Can I get help with 1985 Buick LeSabre Performance Engine orders?

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

What is your return policy for Buick LeSabre Performance Engines?

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

1985 Buick LeSabre Performance Engines

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)

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

Competition Cams – VALVE SEALS, TEFLON 3/8" 1 ST (Part No.505-16)

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

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

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

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

FEL-PRO Performance – Lower Intake Manifold Gasket Set: 4 Piece Set (Part No.1357)

FEL-PRO Performance – Lower Intake Manifold Gasket Set: 12 Piece Set (Part No.1233)

Competition Cams – Xtreme Energy 230/236 Hydraulic Flat Cam (Part No.51-224-4)

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

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

Edelbrock – Sure Seat Valve Springs for Chrysler 383-400-413-440 V8 1969-79 (Part No.5792)

Competition Cams – High Energy/Marine 218/218 Hydraulic Flat Cam/Lifter Kit (Part No.CL12-210-2)

Competition Cams – High Energy 206/206 Hydraulic Flat Cam K-Kit (Part No.K12-205-2)

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

Competition Cams – 11 Steel Retainer for Buick 350-455 with 1.225"-1.250" OD Valve Spring (Part No.712-1)

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

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1004)

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1010)

FEL-PRO Performance – Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts (Part No.1003)

Spectre – Water Neck Chev Late w/Hdr (Part No.42313)

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

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

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

Mr. Gasket – Advance And Retard Cam Bushings (Part No.85)

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

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

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

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

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

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

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