Proper breakin? [Archive] - Chevelle Tech

: Proper breakin?


masterwoo
Sep 3rd, 99, 5:28 PM
I put my 67 back together, built 327 and th350 tranny. All electrical is hooked up properly and Im ready to start it up. I couldnt find this in the tech section (mabey I wasnt looking hard enough) but I want to know the proper way to break in a totally rebuilt engine. Thanks.

Dan

Philip
Sep 3rd, 99, 8:01 PM
In addition to the procedure below, I found it helpful to not bolt up the torque convertor to the flex plate so that I only had to deal with the engine start up. After the cam was run in and timing was adjusted then I bolted up the convertor and filled the trans.

This was copied from the following site.
www.paceparts.com (http://www.paceparts.com)

Recommended GM Crate 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 (Use engine oil primer GM#12368084, see bottom of page) the oil system.

3) Run the engine between 2,000 and 2,500 RPM, with no-load on the engine for the first 30 minutes.

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 to proper timing specifications.

7) Drive the vehicle with varying speeds and load 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 or 60 MPH), then let off in gear and coasting back down to 20 MPH.

9) Run a couple hard-throttle accelerations to about 5,000 RPM (55 or 60 MPH), then let off in gear and coasting back down to 20 MPH.

10) Change the oil and filter, use the correct oil weight and a quality filter (see your owner's manual).

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 filter again.

13) Your engine is now ready for many happy cruising miles !!!



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Philip Valentine
Lakeside, AZ
Team Chevelle Member #42 GOLD
philip@chevelles.com

DZAUTO
Sep 4th, 99, 12:25 AM
Do you suppose John Force deletes the second part of item 7 on a fresh engine?

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Tom Parsons

[This message has been edited by DZAUTO (edited 09-04-99).]