I just got done rebuilding my TPI motor. The block and the heads were totally reconditioned. Totally balanced, new cam, new pistons, new gaskets (of course), the whole rebuild. My question is, do I need to do the same break-in procedure on this motor as I would a brand new crate motor? ANY help would be greatly appreciated. Thanks.

 

Strait from GM:
RECOMMENDED ENGINE START-UP PROCEDURE
1. SAFETY FIRST! If the car is on the ground, be sure the emergency brake is set, the wheels
are chocked, and the transmission cannot fall into gear.
2. Be sure to check the oil level in the engine and prime the oil system
3. Run engine between 2,000 and 2,500 RPMs, with no-load on the engine for the first 30 min.
4. Adjust the distributor timing roughly by hand for a quick start up and smoothest idle possible.
5. Adjust the carburetor settings, if necessary.
6. After the first 30 minutes of the engine running, set the ignition timing (see install ignition
section for timing specifications).
7. Drive the vehicle with varying speeds and loads on the engine for the first 30 miles. Be sure
not to use a lot of throttle or high RPM.
8. Run five or six medium-throttle accelerations to about 5,000 RPM (55 to 60 MPH), then
letting off in gear and coasting back down to 20 MPH.
9. Run a couple hard-throttle accelerations up to about 5000 RPM (55 to 60 MPH), then letting
off in gear and coasting back down to 20 MPH.
10. Change the oil and filter with 10w30SG oil and PF1218 AC Delco oil filter (PN 251605610
11. Drive the next 500 miles normally, without high RPM's (below 5,000 RPM), hard use, or
extended periods of high loading.
12. Change the oil and oil filter again.
13. Your engine is now ready for many happy cruising miles!



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"Question with boldness even the existence of a God; because, if there be one, he must more approve of the homage of reason, than that of blind-folded fear."

-Thomas Jefferson