from GG's "white book":

US spec. (Y05)
CHALLENGER
JH27C0B - /6
~ 287 - auto
~ 91 - 3-spd
JH27G0B - 318
~ 1762 - auto
~ 109 - 3-spd
~ 74 - 4-spd
JH27H0B - 340
~ 178 - auto
~ 20 - 3-spd
~ 66 - 4-spd
JH27L0B - 383 2bbl
~ 211 - auto
JH27N0B - 383 4bbl
~ 84 - auto
~ 7 - 3-spd
~ 31 - 4-spd
CHALLENGER R/T
JS27N0B - 383 4bbl
~ 516 - auto
~ 19 - 3-spd
~ 149 - 4-spd
JS27U0B - 440 4bbl
~ 129 - auto
~ 34 - 4-spd
JS27V0B - 440 SIX PACK
~ 38 - auto
~ 61 - 4-spd
JS27R0B - HEMI
~ 4 - auto
~ 5 - 4-spd