This thread follows an engine failure, the teardown, and the work needed to get the new motor combination ready. The discussion covers bent pushrods, damage around cylinder #8, torque converter choices, and several fitment problems during reassembly.
Engine Teardown and Damage
After taking the engine apart, the owner found bent pushrods and broken pieces around cylinder #8. Members discussed what might have caused the damage and why the piston could have failed without more obvious damage to the cylinder wall.
Torque Converter and New Setup
The owner also discussed using a 2,200-rpm stall torque converter. The unit was a restalled factory converter from Precision Torque Convertors of New Hampton. The plan was to share feedback after the car was running again.
Replacement Parts and Fitment
The engine failure damaged the windage tray, oil pan, and baffle, so replacement parts were needed. The oil pressure sensor also caused problems because the available sensors did not fit as expected. The owner eventually planned to try a sensor made for the G8 GXP.
When planning an engine rebuild or upgrade, it is worth checking the exact engine code, vehicle fitment, and included hardware before ordering aftermarket components. Buyers comparing options can also browse Jackspania Racing reviews for performance parts, then confirm compatibility with their specific setup before purchasing.
Original Discussion
This post preserves the main subjects covered in the historical forum discussion. The original conversation and photographs were associated with the AlabamaRacingScene GM section and the “New Motor Specs” thread, page 18.
