Product Description
Camshaft (Stock Replacement)
1985 Oldsmobile 98 3.8L / 231 OHV V6 12V Buick 231 3.800" Bore 75-88
#PN-ES740-9Camshaft - Stock - ES740
Details Value Part number ES740 Sizes available N/A
Dimensions
Attribute Value AttributeData .224 CatalogColumn Cam Lift Int.''
Attribute Value AttributeData .240 CatalogColumn Cam Lift Exh.''
Attribute Value AttributeData .358 CatalogColumn Valve Lift Int.''
Attribute Value AttributeData .384 CatalogColumn Valve Lift Exh.''
Attribute Value AttributeData 104 CatalogColumn C/L Int
Attribute Value AttributeData 110 CatalogColumn C/L Exh
Attribute Value AttributeData 180 CatalogColumn .050'' Dur. Int.
Attribute Value AttributeData 194 CatalogColumn .050'' Dur. Exh.
Attribute Value AttributeData Hyd. CatalogColumn Lash Exh.''
Attribute Value AttributeData Hyd. CatalogColumn Lash Int.''
Attribute Value AttributeData Hyd. CatalogColumn Sleeve Type
Attribute Value AttributeData s CatalogColumn Stage
Package detail
Attribute Value Package Size 2x2x23.25" Weight 7.5 lbs
Competitive interchange
Brand Part number Elgin E-731-S FEL-PRO CS-702 MAHLE 229-1701 Melling SBC-10 Melling SBC-12
Product notes
Camshaft Break-in Additive
Cam-Shield with ZDDP
(Zinc Di-Alkyl-Dithio-Phosphate)
Anti-wear chemistry is required in all engine oils to protect valve train components and other metal surfaces from wearing. TodayÂs passenger car engine oils do not contain enough ZDDP for proper engine protection during the break-in process.
EnginetechÂs ZDDP provides the additional protection that your remanufactured engine needs. EnginetechÂs ZDDP is super concentrated so that only a small amount is needed to treat your oil for new cam break-in.
EnginetechÂs ZDDP is THE premium concentrated (Zinc) anti-wear engine oil additive. Our specially formulated product is specifically designed to protect:
 Camshafts
 Valve Train Component
 Piston Ring & Cylinder Liner Contact Area (lifters, followers, pushrods, rockers, lifter bores) from premature wear caused by todayÂs oils.
Cam-Shield Paste Premium Molybdnum Disulfide
Camshaft Assembly Paste
Enriched with Cam-shield® Premium ZDDP Anti-wear Technology
Cam-Shield® brand premium Molybdenum Disulfide Camshaft Assembly Past provides fortified anti-wear protection for new camshafts during initial break-in.
 Cam-shield® Premium ZDDP concentration of 2500 parts per million (ppm) of Zink (the optimum ZDDP concentration for break-in).
 Use with all mechanical and hydraulic camshafts and lifters.
 Initiates proper cam break-in.
 Prevents galling.
 Excellent for racing, pro-street, street, classic, agricultural, diesel and marine camshafts.
Available in 3 sizes to meet the needs of all customers and businesses.
5/8-oz. Lube Pack
Treats one typical 8-cylinder engine camshaft and lifters.
 Single 5/8-oz. Lube Pack
 50 pack case
4-oz. Brush Top Jar
Treats up to 6 typical 8-cylinder engine camshafts and lifters.
 4-oz. brush top jar
 12 jar case
1-lb. Tub
Treats up to twenty-four (24) typical 8-cylinder engine camshafts and lifters.
 1-lb. tub
 12 tub case
Treat break-in oil with Cam-shield® Premium ZDDP Anti-wear oil treatment.
 Protect your racing engine from wear!
 Keep your engine's power level up!
 Get more races from your motor before rebuild time!
 Strongest Concentration!
 Best Technology!
 Best Value!
 Cam-Shield® The Performance Advantage!
Also fits
Category Make Model User engine Year range Notes Car GM 3.0L / 181 OHV V6 12V "E,L" Buick 3.800" Bore 82-88 82-85 Engine VIN code E. Carb. Car GM 3.8L / 231 OHV V6 12V Buick 231 Turbo 3.800" Bore 78-89 78-78 Engine VIN code G,3. Use flat followers. Car GM 3.8L / 231 OHV V6 12V Buick 231 3.800" Bore 75-88 79-79 Engine VIN code 2. Use flat followers. Car GM 3.8L / 231 OHV V6 12V Buick 231 Turbo 3.800" Bore 78-89 79-82 Engine VIN code 3. Use flat followers. Car GM 3.8L / 231 OHV V6 12V Buick 231 3.800" Bore 75-88 79-83 Engine VIN code A. Use flat followers. Car GM 3.8L / 231 OHV V6 12V Buick 231 Turbo 3.800" Bore 78-89 83-83 Engine VIN code 8. Use flat followers. Car GM 3.8L / 231 OHV V6 12V Buick 231 3.800" Bore 75-88 84-85 Engine VIN code 3,A. Use flat followers. Car GM 3.8L / 231 OHV V6 12V Buick 231 Turbo 3.800" Bore 78-89 84-85 Engine VIN code 9. Riviera. Use flat followers. Car GM 3.8L / 231 OHV V6 12V Buick 231 3.800" Bore 75-88 86-86 Engine VIN code A. Use flat followers. Car GM 4.1L / 252 OHV V6 12V "4" Buick 3.965" Bore 80-84 80-84 TRUCK, VAN, SUV GM, CHEVROLET 3.8L / 231 OHV V6 12V "2,A" Buick 231 3.800" Bore 78-84 79-84
Vehicle-Specific Engine Part Information
1985 Oldsmobile 98 3.8L Camshaft (Stock Replacement) Enginetech ES740. This camshaft (stock replacement) is listed for the 1985 Oldsmobile 98 3.8L engine application. Match the engine configuration and manufacturer part number before ordering parts for your rebuild or repair.
Manufacturer application notes: Engine VIN code G,3. Use flat followers. Engine VIN code 2. Use flat followers.
For a 1985 Oldsmobile 98 3.8L engine repair, the same part may be identified as 1985 Oldsmobile 98 Engine Camshaft, Oldsmobile 98 3.8L Engine Camshaft, Engine Camshaft for 1985 Oldsmobile 98 3.8L. These vehicle-specific descriptions help distinguish the required camshaft (stock replacement) from other engine components used on similar vehicles.
Additional application-specific terminology includes 1985 Oldsmobile 3.8L Engine Camshaft, Oldsmobile 98 Engine Camshaft, 3.8L Oldsmobile 98 Engine Camshaft, 1985 Oldsmobile 98 3.8L Replacement Camshaft. All of these references concern the same Enginetech ES740 listing; they do not indicate extra components in the package.
Supplier-listed competitive interchange references: MAHLE 229-1701, FEL-PRO CS-702, Elgin E-731-S, Melling SBC-10, Melling SBC-12. Interchange numbers are identification references, not a claim that another brand is supplied; confirm dimensions and fitment.
Whether you are refreshing a worn engine or completing a full rebuild of a 1985 Oldsmobile 98 3.8L, selecting the right camshaft (stock replacement) depends on accurate engine identification. Check the engine code, relevant dimensions and any vehicle-specific installation restrictions against your existing components. This listing identifies Enginetech ES740; verify the correct configuration before purchasing.
Professional Engine Rebuilders offers this camshaft (stock replacement) for shoppers searching by the 1985 Oldsmobile 98 3.8L application, Enginetech manufacturer number ES740, or the unique vehicle-specific listing number PN-ES740-9. Confirm fitment, selected sizes and exact package contents on the product page. Cross-reference part numbers are provided for identification and comparison, not as substitutes for fitment verification.
Camshaft - Stock - ES740
| Details | Value |
|---|---|
| Part number | ES740 |
| Sizes available | N/A |
Dimensions
| Attribute | Value |
|---|---|
| AttributeData | .224 |
| CatalogColumn | Cam Lift Int.'' |
| Attribute | Value |
|---|---|
| AttributeData | .240 |
| CatalogColumn | Cam Lift Exh.'' |
| Attribute | Value |
|---|---|
| AttributeData | .358 |
| CatalogColumn | Valve Lift Int.'' |
| Attribute | Value |
|---|---|
| AttributeData | .384 |
| CatalogColumn | Valve Lift Exh.'' |
| Attribute | Value |
|---|---|
| AttributeData | 104 |
| CatalogColumn | C/L Int |
| Attribute | Value |
|---|---|
| AttributeData | 110 |
| CatalogColumn | C/L Exh |
| Attribute | Value |
|---|---|
| AttributeData | 180 |
| CatalogColumn | .050'' Dur. Int. |
| Attribute | Value |
|---|---|
| AttributeData | 194 |
| CatalogColumn | .050'' Dur. Exh. |
| Attribute | Value |
|---|---|
| AttributeData | Hyd. |
| CatalogColumn | Lash Exh.'' |
| Attribute | Value |
|---|---|
| AttributeData | Hyd. |
| CatalogColumn | Lash Int.'' |
| Attribute | Value |
|---|---|
| AttributeData | Hyd. |
| CatalogColumn | Sleeve Type |
| Attribute | Value |
|---|---|
| AttributeData | s |
| CatalogColumn | Stage |
Package detail
| Attribute | Value |
|---|---|
| Package Size | 2x2x23.25" |
| Weight | 7.5 lbs |
Competitive interchange
| Brand | Part number |
|---|---|
| Elgin | E-731-S |
| FEL-PRO | CS-702 |
| MAHLE | 229-1701 |
| Melling | SBC-10 |
| Melling | SBC-12 |
Product notes
Camshaft Break-in Additive
Cam-Shield with ZDDP
(Zinc Di-Alkyl-Dithio-Phosphate)
Anti-wear chemistry is required in all engine oils to protect valve train components and other metal surfaces from wearing. TodayÂs passenger car engine oils do not contain enough ZDDP for proper engine protection during the break-in process.
EnginetechÂs ZDDP provides the additional protection that your remanufactured engine needs. EnginetechÂs ZDDP is super concentrated so that only a small amount is needed to treat your oil for new cam break-in.
EnginetechÂs ZDDP is THE premium concentrated (Zinc) anti-wear engine oil additive. Our specially formulated product is specifically designed to protect:
 Camshafts
 Valve Train Component
 Piston Ring & Cylinder Liner Contact Area (lifters, followers, pushrods, rockers, lifter bores) from premature wear caused by todayÂs oils.
Cam-Shield Paste Premium Molybdnum Disulfide
Camshaft Assembly Paste
Enriched with Cam-shield® Premium ZDDP Anti-wear Technology
Cam-Shield® brand premium Molybdenum Disulfide Camshaft Assembly Past provides fortified anti-wear protection for new camshafts during initial break-in.
 Cam-shield® Premium ZDDP concentration of 2500 parts per million (ppm) of Zink (the optimum ZDDP concentration for break-in).
 Use with all mechanical and hydraulic camshafts and lifters.
 Initiates proper cam break-in.
 Prevents galling.
 Excellent for racing, pro-street, street, classic, agricultural, diesel and marine camshafts.
Available in 3 sizes to meet the needs of all customers and businesses.
5/8-oz. Lube Pack
Treats one typical 8-cylinder engine camshaft and lifters.
 Single 5/8-oz. Lube Pack
 50 pack case
4-oz. Brush Top Jar
Treats up to 6 typical 8-cylinder engine camshafts and lifters.
 4-oz. brush top jar
 12 jar case
1-lb. Tub
Treats up to twenty-four (24) typical 8-cylinder engine camshafts and lifters.
 1-lb. tub
 12 tub case
Treat break-in oil with Cam-shield® Premium ZDDP Anti-wear oil treatment.
 Protect your racing engine from wear!
 Keep your engine's power level up!
 Get more races from your motor before rebuild time!
 Strongest Concentration!
 Best Technology!
 Best Value!
 Cam-Shield® The Performance Advantage!
Also fits
| Category | Make | Model | User engine | Year range | Notes |
|---|---|---|---|---|---|
| Car | GM | 3.0L / 181 OHV V6 12V "E,L" Buick 3.800" Bore 82-88 | 82-85 | Engine VIN code E. Carb. | |
| Car | GM | 3.8L / 231 OHV V6 12V Buick 231 Turbo 3.800" Bore 78-89 | 78-78 | Engine VIN code G,3. Use flat followers. | |
| Car | GM | 3.8L / 231 OHV V6 12V Buick 231 3.800" Bore 75-88 | 79-79 | Engine VIN code 2. Use flat followers. | |
| Car | GM | 3.8L / 231 OHV V6 12V Buick 231 Turbo 3.800" Bore 78-89 | 79-82 | Engine VIN code 3. Use flat followers. | |
| Car | GM | 3.8L / 231 OHV V6 12V Buick 231 3.800" Bore 75-88 | 79-83 | Engine VIN code A. Use flat followers. | |
| Car | GM | 3.8L / 231 OHV V6 12V Buick 231 Turbo 3.800" Bore 78-89 | 83-83 | Engine VIN code 8. Use flat followers. | |
| Car | GM | 3.8L / 231 OHV V6 12V Buick 231 3.800" Bore 75-88 | 84-85 | Engine VIN code 3,A. Use flat followers. | |
| Car | GM | 3.8L / 231 OHV V6 12V Buick 231 Turbo 3.800" Bore 78-89 | 84-85 | Engine VIN code 9. Riviera. Use flat followers. | |
| Car | GM | 3.8L / 231 OHV V6 12V Buick 231 3.800" Bore 75-88 | 86-86 | Engine VIN code A. Use flat followers. | |
| Car | GM | 4.1L / 252 OHV V6 12V "4" Buick 3.965" Bore 80-84 | 80-84 | ||
| TRUCK, VAN, SUV | GM, CHEVROLET | 3.8L / 231 OHV V6 12V "2,A" Buick 231 3.800" Bore 78-84 | 79-84 |
Vehicle-Specific Engine Part Information
1985 Oldsmobile 98 3.8L Camshaft (Stock Replacement) Enginetech ES740. This camshaft (stock replacement) is listed for the 1985 Oldsmobile 98 3.8L engine application. Match the engine configuration and manufacturer part number before ordering parts for your rebuild or repair.
Manufacturer application notes: Engine VIN code G,3. Use flat followers. Engine VIN code 2. Use flat followers.
For a 1985 Oldsmobile 98 3.8L engine repair, the same part may be identified as 1985 Oldsmobile 98 Engine Camshaft, Oldsmobile 98 3.8L Engine Camshaft, Engine Camshaft for 1985 Oldsmobile 98 3.8L. These vehicle-specific descriptions help distinguish the required camshaft (stock replacement) from other engine components used on similar vehicles.
Additional application-specific terminology includes 1985 Oldsmobile 3.8L Engine Camshaft, Oldsmobile 98 Engine Camshaft, 3.8L Oldsmobile 98 Engine Camshaft, 1985 Oldsmobile 98 3.8L Replacement Camshaft. All of these references concern the same Enginetech ES740 listing; they do not indicate extra components in the package.
Supplier-listed competitive interchange references: MAHLE 229-1701, FEL-PRO CS-702, Elgin E-731-S, Melling SBC-10, Melling SBC-12. Interchange numbers are identification references, not a claim that another brand is supplied; confirm dimensions and fitment.
Whether you are refreshing a worn engine or completing a full rebuild of a 1985 Oldsmobile 98 3.8L, selecting the right camshaft (stock replacement) depends on accurate engine identification. Check the engine code, relevant dimensions and any vehicle-specific installation restrictions against your existing components. This listing identifies Enginetech ES740; verify the correct configuration before purchasing.
Professional Engine Rebuilders offers this camshaft (stock replacement) for shoppers searching by the 1985 Oldsmobile 98 3.8L application, Enginetech manufacturer number ES740, or the unique vehicle-specific listing number PN-ES740-9. Confirm fitment, selected sizes and exact package contents on the product page. Cross-reference part numbers are provided for identification and comparison, not as substitutes for fitment verification.
