Spindy's: Car Database

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1968 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:

3914678 - 327

3916321 - 427

3935439 - 427

ENGINE SUFFIX CODE:

HE - 327ci, 300hp (Rochester Quadrajet Carb and Manual Transmission)

HO - 327ci, 300hp (Rochester Quadrajet Carb & M40 THM Automatic Transmission)

HP - 327ci, 300hp (Rochester Quadrajet Carb, A/C, P/S & Manual Transmission)

HT - 327ci, 350hp (Rochester Quadrajet Carb, Special Cam & 4-Speed Manual Transmission)

IL - 427ci, 390hp (Rochester Quadrajet Carb, Hydaulic Lifters & 4-Speed Transmission)

IM - 427ci, 390hp (L36 Engine with Holley 3x2 Carb and 4-Speed Transmission)

IO - 427ci. 400hp (L36 Engine with Holley 3x2 Carb and M40 THM Automatic Transmission)

IQ - 427ci, 390hp (Rochester Quadrajet Carb, Hydaulic Lifters, M40 THM Auto Transmission)

IR - 427ci, 435hp (3x2 Holley Carb, Mechanical Lifters, 4-Speed Manual Transmission)

IU - 427ci, 435hp (L71 Engine w/Aluminum Heads, 4-Speed Transmission)

IT - 427ci, 430hp (1x4 Holley Carb, Heavy-Duty Engine, M22 4-Speed Transmission)