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Tempest & GTO Engines

Code & Trans. Type Disp. & Carb. Comp. Ratio
ZC, ZK Synchro-mesh 250" 6 1 Bbl. 9.0:1
ZF, ZN Auto. 250" 6 1 Bbl. 9.0:1
ZH, ZD Synchro-mesh 250" 6 4 Bbl. 10.5:1
ZL, ZE Auto. 250" 6 4 Bbl. 10.5:1
XS, XR Auto. 350" V8 2 Bbl. 9.2:1
YU, YN Auto. 350" V8 2 Bbl. 9.2:1
WU, WP Synchro-mesh 350" V8 2 Bbl. 9.2:1
XU Auto. 350" V8 4 Bbl. 10.5:1
WV Synchro-mesh 350" V8 4 Bbl. 10.5-1
YS Auto. 400" V8 4 Bbl. 10.75:1
WT Synchro-mesh 400" V8 4 Bbl. 10.75:1
YZ Auto. 400" V8 4 Bbl. 10.75:1
WS Synchro-mesh 400" V8 4 Bbl. 10.75:1
XX, XM Auto. 400" V8 2 Bbl. 8.6:1
XP Auto. 400" V8 4 Bbl. 10.75:1
WW Synchro-mesh 400" V8 4 Bbl. 10.75:1


Code & Trans. Type Displ. & Carb. Comp. Ratio
ZB Synchro-mesh 250" 6 1-Bbl. 8.5:1
ZG Auto. Trans. 250" 6 1-Bbl. 8.5:1
WU Synchro-mesh 350" V8 2-Bbl. 8.8:1
YU Auto. Trans. 350" V8 2-Bbl. 8.8:1
WS, WW Synchro-mesh 400" V8 4-Bbl. 10.5:1
WT Synchro-mesh 400" V8 4-Bbl. 10.25:1
XX Auto. Trans. 400" V8 2-Bbl. 8.8:1
XV, YS Auto. Trans. 400" V8 4-Bbl. 10.0:1
XP, YZ Auto. Trans. 400" V8 4-Bbl. 10.5:1
WA Synchro-mesh 455" V8 4-Bbl. 10.25:1
YA Auto. Trans. 455" V8 4-Bbl. 10.25:1