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Recommended Break-In Procedure:
Start-up is critical to ensure engine life. This procedure was written with the intent to provide a quick reference and guideline to starting
a new or rebuilt engine if a dyno is not available. If you are using a dyno, refer to the dyno operator's guidelines for start up and initial
break in of the engine.
1. SAFETY FIRST! Make sure you have proper tools as well as eye protection. If the car is on the ground, be sure the wheels
are chocked and the transmission is in neutral.
2. Be sure to check the oil level in the engine and prime the oil system.
3. Run the engine between 2,000 and 2,500 rpm, with no-load for the first 30 minutes.
4. Refer to the Valve Lash Procedure (pg 7) and lash valves.
5. Adjust the distributor timing to recommended specifications.
6. Adjust carburetor settings. Idle mixture screws, base idle, floats, etc.
7. After first 30 minutes of the engine running, re-set ignition timing and carb adjustments.
8. Drive the vehicle at varying speeds and loads for first 30 laps. Be sure not to use a lot of throttle or high rpm's.
9. Run 5-6 medium-throttle accelerations to about 4500 rpm followed by letting off in gear and coasting back down to 2000 rpm.
10. Run a couple of hard-throttle accelerations to about 5000 rpm followed by letting off in gear and coasting back down to 2000 rpm.
11. Change the oil and filter with Mobil 1 Synthetic oil (P/N 12347284 and PF1218) and ACDelco oil filter (P/N 25160561).
12. Drive the next 25 laps without high rpm's (below 5000 rpm), hard use, or extended periods of high loading.
13. Change the oil and filter again.
14. Your engine is now ready for racing!
CT350 Circle Track Engine - 88958602 - Specifications
TITLE
ALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11
WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.
TO BE UNITIZED IN ACCORDANCE WITH GMSPO SPECIFICATIONS.
88960547
REV 05FE08
PART NO.
DATE
REVISION
GENERAL MOTORS
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