Engine Code Suffix Mystery
Just went through and tried to decode my engine number. Problem is that I can't find an answer to my engine code suffix.
My engine number is V0514XT - Flint engine, May 14th, but XT? Can't find this listed anywhere!
Anyone have an answer?
Thanks,
Mark

1969 XA 350 m/t 255 4 C-10 to 35
1969 XB 350 M/t 255 4 C-20 to 35
1969 XC 350 Powerglide 255 4 C-10 to 25
1969 XD 350 turhydro 255 4 C-10 to 35
1963 XE 327 universal service - - cars
1969 XE 350 M/t 255 4 C-20 & 30
1969 XF 350 Powerglide 255 4 C-10 to 35
1969 XG 350 turbohydro 255 4 C-10, 20, 30
1969 XH 350 - 215 2 C-40
1969 XI 350 - 215 2 C-50 & 60
1969 XJ 350 - 215 2 C-50
1969 XK 350 - 215 2 T-50 & 60
1969 XN 350 - 215 2 C-60
1969 XO 350 turbohydro, A.I.R. 255 4 K-20
1969 XP 350 m/t, A.I.R. 255 4 C-10 to 30
1969 XS 350 - 215 2 C-40 & 50
1969 XU 350 - 215 2 C-50
1969 XV 350 - 215 2 T-50
1969 XW 350 m/t 255 4 K-10 to 25
1969 XX 350 m/t 255 4 K-20 & 25
1969 XY 350 turbohydro 255 4 K-10 to 25
1969 XZ 350 Powerglide,A.I.R. 255 4 C-20 & 25
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With cropping, you can turn this:

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As for your situation, certainly looks like an "XT" to me. How about a 1967 Pontiac 400ci?
1969 XA 350 m/t 255 4 C-10 to 35
1969 XB 350 M/t 255 4 C-20 to 35
1969 XC 350 Powerglide 255 4 C-10 to 25
1969 XD 350 turhydro 255 4 C-10 to 35
1963 XE 327 universal service - - cars
1969 XE 350 M/t 255 4 C-20 & 30
1969 XF 350 Powerglide 255 4 C-10 to 35
1969 XG 350 turbohydro 255 4 C-10, 20, 30
1969 XH 350 - 215 2 C-40
1969 XI 350 - 215 2 C-50 & 60
1969 XJ 350 - 215 2 C-50
1969 XK 350 - 215 2 T-50 & 60
1969 XN 350 - 215 2 C-60
1969 XO 350 turbohydro, A.I.R. 255 4 K-20
1969 XP 350 m/t, A.I.R. 255 4 C-10 to 30
1969 XS 350 - 215 2 C-40 & 50
1969 XU 350 - 215 2 C-50
1969 XV 350 - 215 2 T-50
1969 XW 350 m/t 255 4 K-10 to 25
1969 XX 350 m/t 255 4 K-20 & 25
1969 XY 350 turbohydro 255 4 K-10 to 25
1969 XZ 350 Powerglide,A.I.R. 255 4 C-20 & 25


















