Re: 383 flat tappet breakin
From 7. in the break in instruction from Crane above, these are what it says...
Start the engine and immediately bring to 3,000 rpm. Timing should be adjusted, as closely as possible, to reduce excessive heat or load during break-in. Get the engine running fairly smoothly and vary the engine speed from 1500-3000 RPM in a slow, to moderate, acceleration/deceleration cycle.
During this time, be sure to check for any leaks and check out any unusual noises. If something doesn’t sound right, shut the engine off and check out the source of the noise.
Upon restart, resume the high idle speed cycling. Continue the varying “break-in” speed for 20 - 30 minutes. This is necessary to provide proper lifter rotation to properly mate each lifter to its lobe.
The important thing is to vary the RPMs in a slow to moderate cycle.
68 Camaro SS 396 - 468 BBC now, M21, 12 bolt 3.73 coded housing but w/ 3.31 gears.
Looking for 68 Camaro with body number NOR 181016
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