Chevelle Tech - View Single Post - LS6 crate 454 piston help
View Single Post
post #11 of (permalink) Old Nov 19th, 02, 2:22 AM
dsr
 
Join Date: Jul 2002
Posts: 392
HI Volney
In 1990 I bought a new XXA LS6 crate engine part #366250 It came with the closed chamber pistons & open chamber heads witch gives you 10.23to1 compression. The original 1970 motors had closed chamber pistons and closed chamber heads & 11to1 compression.I ran it on Sunoco 94 octane for many years 40,000 miles and didn't think there was any problems (motor ran fine and no ignition ping) until I had the motor rebuilt this past summer. The engine builder said I had damaged the piston skirts due to detonation??? I replaced the pistons and dropped it down to 9to1 to avoid any further problems with detonation. Dave
dsr is offline  
 
 
For the best viewing experience please update your browser to Google Chrome