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View Full Version : Yenko engine rebuild - 4speed vs. Automatic


John
09-12-2014, 04:43 PM
... Is there somewhere that I can find out what the difference is in rebuilding a 1969 Yenko Camaro 427 motor
.... that shows if there are any difference between a 427 motor that was built for a 4 speed Camaro compared to a 427 motor built for an Automatic yenko Camaro?

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Fast67VelleN2O
09-12-2014, 05:07 PM
There was no differences in part numbers on anything other than the fact that the stick shift crankshaft got a pilot bushing.

Lynn
09-12-2014, 05:18 PM
Only difference is the pilot bushing.
No internal differences.

John
09-12-2014, 05:34 PM
.... so the automatics did NOT have hydraulic lifters?

.... they both had solid lifters?

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Lynn
09-12-2014, 09:07 PM
Correct. Solid lifters in both stick and auto.
(Did I beat Matt to it this time?)

Fast67VelleN2O
09-15-2014, 11:12 PM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lynn</div><div class="ubbcode-body">Correct. Solid lifters in both stick and auto.
(Did I beat Matt to it this time?) </div></div>

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All L72's had solid lifters regardless of what transmission was behind it as Lynn stated.