Edelbrock Performer-Plus 425, Performer-Plus 2152 User Manual

PERFORMER-PLUS CAMSHAFT/LIFTERS/LUBE KIT

Catalog #2152

MODEL: 400, 425, & 455 c.i.d. Oldsmobile V8, 1967 & later

(except Toronado)

INSTRUCTIONS

• PLEASE study these instructions carefully before installing your new camshaft. If you have any questions or problems, do not hesitate to call our Technical Hotline at: 1-800-416-8628.

• CAMSHAFT: Edelbrock Performer-Plus camshafts are ground specifically for use with the corresponding Performer manifold #2151 on engines operating from idle to 5500 rpm. The Performer Olds 455 manifold #2151 and Performer-Plus camshaft #2152 are designed to work as a team to give you better driveability and performance. They are dyno-matched and street-proven. For best results, use the Edelbrock manifold/camshaft package with the carburetor and headers we recommend. NOTE: Maximum performance is achieved when the Edelbrock Performer Olds 455 Power Package components are used with the following equipment:

• Performer Olds 455 manifold/camshaft/timing set/valve springs

• Original Equipment Quadrajet carburetor (w/electric choke) or Edelbrock carburetor #1407 or #1411

• 1-3/4" headers

• aftermarket/re-curved distributors

• any combination of the above

• IMPORTANT: This instruction sheet provides general installation guidelines which can affect your warranty. Read it carefully. It is not our intent to cover each detail of installation here; a step-by-step procedure manual would be far too lengthy. We want to caution you that installing a camshaft is a complicated procedure that requires a good general knowledge of automotive engines. If you are not confident that you can complete the camshaft installation successfully, we suggest you consider having it installed by an experienced mechanic.

CAUTION: Improper installation will result in LOW MILEAGE, POOR PERFORMANCE, COSTLY REINSTALLATION, and ENGINE DAMAGE.

TO AVOID THESE PROBLEMS YOU MUST DO THE FOLLOWING: Carefully study and understand all instructions. Examine the camshaft for possible shipping damage (if damaged contact your dealer immediately).

• TOOLS AND EQUIPMENT

o Use the following checklist for items needed. o box and open-end wrenches o socket set o distributor wrench o pliers (channel locks & hose clamp) o screw drivers (regular and phillips) o torque wrench o hammer o gasket scraper or putty knife o timing light o vacuum gauge o rags o water bucket o harmonic balancer puller o crank gear puller

• HARDWARE & PARTS TO BUY o gaskets- OEM valley pan or equivalent o pipe plugs, if needed o Edelbrock Gasgacinch, #9300 o RTV Silicone o chalk o paper and pencil o radiator coolant o teflon tape o Edelbrock Performer-Link True Rolling Timing Chain and Gear Set

#7813

o New OEM Valve Springs or equivalent

PREPARATION CHECKLIST

Rev. 9/08 - AJ/mc

page 1

INSTRUCTIONS FOR ENGINE PARTS REMOVAL

• BEFORE CAMSHAFT INSTALLATION

1. Disconnect battery.

2. For ease of installation, keep all parts in some sort of order.

WARNING: Do not remove radiator cap or radiator hose if engine is hot.

3. Drain radiator coolant, move fan shroud back and remove fan and

spacer from water pump. Remove radiator and air conditioning condenser if so equipped. In some cases, the front grille may have to be removed. Measure distance from front cover to grille or brackets that may interfere with camshaft against the length of the camshaft.

4. Remove gas cap to relieve pressure. Disconnect fuel line at fuel

pump and plug. Replace gas cap.

5. Disconnect all linkage from carburetor such as throttle, throttle

springs, transmission, cruise control and automatic choke.

6. Tag and remove coil wires, sensor wires.and all vacuum lines.

7. Remove valve covers.

8. Remove distributor cap and wires, rotate engine until rotor points

towards number 1 terminal in cap and pointer on front cover is on Top Dead Center (TDC) and remove distributor. Note the approximate position of the vacuum advance canister in relation to the manifold to assist in getting the distributor properly located during re-installation.

9. Remove carburetor and intake manifold.

10. Remove rocker arms and pushrods. CAUTION: Rocker arms and

rocker arm pivots must be re-installed in their original positions.

11. Remove old valve lifters.

12. Remove crankshaft pulley and, using a suitable puller, crankshaft

dampener.

13. Loosen oil pan and remove water pump, fuel pump, and front

cover. NOTE: The front cover oil seal should be replaced before the front cover iis re-installed.

14. Rotate engine until timing marks are aligned as shown in Figure 2.

15. Remove cam sprocket bolts. Slide sprocket and timing chain for-

ward to remove.

16. Remove camshaft. Using appropriate gear puller, remove crank

sprocket.

• VALVE SPRINGS

CAUTION: WARNINGS ABOUT YOUR WARRANTY In order for this Performer-Plus cam and lifter kit to be covered under ANY WARRANTY you MUST use the correct original equipment valve springs or equivalent. Failure to install new Edelbrock valve springs or OE equivalent with your new Performer-Plus cam could cause the cam lobes to wear excessively and could cause additional engine damage.

1. This camshaft is designed to function with stock valve springs. Do

not use dual valve springs with this camshaft.

2. When using stock valve springs, check and set spring height to fac-

tory specifications for correct year and model NOTE: Due to various settings throughout the years, we advise checking Motors, Chilton, or Oldsmobile service manuals or correct spring height for your vehicle.

• VALVE ADJUSTMENT

1. Turn the engine over until the No. 1 cylinder is at Top Dead Center (TDC) on the compression stroke (both lifters will be at the bottom of their travel in the lifter bores). Install both intake and exhaust pushrods, rocker arms, rocker arm pivot, and rocker arm bolts. Carefully tighten bolts while feeling pushrods for vertical clearance. As soon as all vertical clearance is gone from pushrods, count number of turns until bolts bottom out. There should be 1/2 turn of lifter pre-load. If vertical clearance exists after bolts bottom out, longer-than-stock pushrods are required. If excessive lifter pre-load exists, use shims under rocker arm pivots to achieve 1/2 turn preload.

2. The above procedure assures correct lifter pre-load. Repeat this procedure for each of the other seven cylinders by rotating the engine 90° and following the firing order (1-8-4-3-6-5-7-2).

3. Re-install front cover, fuel pump, water pump, and oil pan using new gaskets.

4. Install intake manifold using new intake gasket set and torque manifold bolts to 25 ft./lbs.

5. Install crankshaft dampener and torque to factory specs.

page 2

• INSTALLING PUSHRODS AND ROCKER ARMS After the cam is installed and timed correctly (see Figure 2), it will be necessary to check each pushrod for correct lifter pre-load. Before installation, be sure to coat friction surfaces of pushrods, rocker arms and pivots with a suitable lubricant such as motor oil or assembly lube.

• LIFTERS

1. New lifters must be used with a new camshaft. Use only the lifters supplied with this kit.

2. Check to be sure that all lifters fit freely in the lifter bores. CAUTION: Some engines use a .921" diameter lifter. If you have this size lifter, you must purchase TRW VL-59, Speed-Pro #HT-957, or contact Mondello Performance Products, phone # (805) 237-

8808.

• INSTALLATION INSTRUCTIONS

1. Coat cam lobes and bottoms of each lifter with MoS2 lube (supplied) to prevent cam lobe and lifter wear from occurring during initial start-up. Do not "pump up" lifters before installation!

2. Install new camshaft with new sprockets, timing chain and lifters. CAUTION: Use Edelbrock Performer-Plus True Rolling Timing Chain and Gear Set #7813. Do not use late model timing chain & gear sets that are designed in a retarded position and are not recommended for this camshaft installation. Edelbrock Timing Sets feature three keyways for specific timing selection. Use locking compound material on the bolt threads holding timing gear to cam. Torque to factory recommendations specified in motor repair manual. Install camshaft with timing marks lined up as recommended by factory specifications. See Figure 2. When using Performer-Plus Timing Chain and Gear Set #7813 with Edelbrock cam and lifter kits, straight up timing alignment is achieved. If any other timing gear set is used, it is necessary to check cam position for correct timing alignment. This requires indexing the camshaft with a degree wheel to verify timing alignment. O.E.M. or non-Edelbrock timing gear sets are not recommended for use with Edelbrock camshafts.

Rev. 9/08 - AJ/mc

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