Wondering if someone could help me,.....a guy in town here bought a 63 Le Sabre 4 dr sedan and it says "Wildcat 375" on the air cleaner. Can someone tell me what the cubic inches are for that engine? Numbers on the engine are 4J1032948 and it also has JS390 I would appreciate your help. Thanks!
Thanks for your help Wildcat1562, but I thought the 401 had 445 pounds of torque? Must be they upped that in 64 huh? I haven't seen the motor, but he said it doesn't look like a big block, that's what made me wonder. I appreciate your time and assistance. _________________________ former owner of a 69 Skylark lookin for a GS Remember: I'd rather be a "hasbeen" than a "might have been" by far,......for a "might have been" ain't never been, but a "hasbeen" was and are!
JS Engine code was indeed for the 1963 401 CI Nailhead with 2 bbl carb in the LeSabre. 265 HP and 9:1 compression ratio.
"Wildcat 375" is also the designation for the high compression 4v-340 available for model years '66-'67.
The 1962-1963 Wildcat 375 is the low compression 401 that runs on regular gas. The standard 2 barrel 401 in LeSabres was the Wildcat 410.
