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Copyright © Spindy's Classics & Collectibles.  All Rights Reserved.
1966 CHEVROLET CORVETTE
DRIVETRAIN

BLOCK CODES:

A - January
B - February
C - March
D - April
E - May
F - June
G - July
H - August
I - September
J - October
K - November
L - December


CASTING NUMBERS:

  3958174 - 327
  3892657 - 327
  3855961 - 427
  3869942 - 427



ENGINE SUFFIX CODE:

  HE - 327ci, 300hp (Manual Transmission)
  HH - 327ci, 300hp (K19 & Manual Transmission)
  HO - 327ci, 300hp (Powerglide Automatic Transmission)
  HR - 327ci, 300hp (K19 & Powerglide Automatic Transmission)
  HT - 327ci, 350hp (Hi-LiftCam & 4-Speed Manual Transmission)
  HD - 327ci, 350hp (Hi-Lift Cam, K19 & 4-Speed Manual Transmission)
  HP - 327ci, 350hp (Hi-Lift Cam, A/C, P/S & 4-Speed Manual Transmission)
  KH - 327ci, 350hp (Hi-Lift Cam, K19, AJC, P/S, 4-Speed Manual Transmission)
  IL - 427ci, 390hp (Special Cam, Hydraulic Lifters & 4-Speed Manual Transmission)
  IM - 427ci, 390hp (Special Cam, Hydraulic Lifters, K19 & 4-Speed Manual Transmission)
  IQ - 427ci, 390hp (Special Cam, Hydraulic Lifters & Powerglide Automatic Transmission)
  IR - 427ci, 390hp (Special Cam, Hydraulic Lifters, K19 & Powerglide Automatic Transmission)
  IP - 427ci, 425hp (Special Cam, Mechanical Lifters & 4-Speed Manual Transmission)
  IK - 427ci, 425hp (Special Cam, Mechanical Lifters, M22 4-Speed Manual Transmission)

Contact us at 1-855-SPINDYS