1966 HP Engine Code
Thread Starter
Advanced
Joined: Jul 2004
Posts: 74
Likes: 0
From: Redondo Beach CA
1966 HP Engine Code
The HP engine code for 1966 denotes L79 with AC, PS and 4 speed.
Since there is no code for an L79 with AC, 4 speed, and WITHOUT PS...can one assume that all cars built with AC also had PS? Or did the AC (C60) option just get installed onto an HT engine if PS was not an option?
For reference, here are the codes:
HT 327-350 Hi-LiftCam & 4-Speed
HD 327-350 Hi-Lift Cam, K19 & 4-Speed
HP 327-350 Hi-Lift Cam, A/C, P/S & 4-Speed
KH 327-350 Hi-Lift Cam, K19, A/C, P/S, 4-Speed
There would seem to be a few more combinations than those listed above, but I can't seem to find a good explanation of how the coding system worked.
Thanks
Since there is no code for an L79 with AC, 4 speed, and WITHOUT PS...can one assume that all cars built with AC also had PS? Or did the AC (C60) option just get installed onto an HT engine if PS was not an option?
For reference, here are the codes:
HT 327-350 Hi-LiftCam & 4-Speed
HD 327-350 Hi-Lift Cam, K19 & 4-Speed
HP 327-350 Hi-Lift Cam, A/C, P/S & 4-Speed
KH 327-350 Hi-Lift Cam, K19, A/C, P/S, 4-Speed
There would seem to be a few more combinations than those listed above, but I can't seem to find a good explanation of how the coding system worked.
Thanks
Race Director
Joined: Apr 2005
Posts: 11,286
Likes: 2,146
From: Bowling Green, Kentucky
1966 and 1967 L-79 with 4-speed and factory air only (no PS) was coded as HT.
I have one of these cars, and have talked to many others with the same configuration and engine stamping.
Larry
I have one of these cars, and have talked to many others with the same configuration and engine stamping.
Larry
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,926
From: Washington Michigan
There is no Engineering reason for a '66 or '67 with either A/C or power steering to have a unique engine assembly, as neither option has any affect on the basic engine as-shipped. It mattered in '64-'65 due to the relocation of the alternator to the LH side with A/C, but not in '66-'67 when ALL alternators were LH-mounted.
We may never know why they assigned the "HP" suffix, but known-original cars with A/C and/or power steering have been observed with "HT" suffixes. This debate has gone on for years.
We may never know why they assigned the "HP" suffix, but known-original cars with A/C and/or power steering have been observed with "HT" suffixes. This debate has gone on for years.
Melting Slicks
Joined: Aug 2010
Posts: 2,823
Likes: 484
From: El Dorado Hills CA
There is no Engineering reason for a '66 or '67 with either A/C or power steering to have a unique engine assembly, as neither option has any affect on the basic engine as-shipped. It mattered in '64-'65 due to the relocation of the alternator to the LH side with A/C, but not in '66-'67 when ALL alternators were LH-mounted.
We may never know why they assigned the "HP" suffix, but known-original cars with A/C and/or power steering have been observed with "HT" suffixes. This debate has gone on for years.
We may never know why they assigned the "HP" suffix, but known-original cars with A/C and/or power steering have been observed with "HT" suffixes. This debate has gone on for years.
Does anyone have an original tank sticker that shows this? Would love to see it.
Ed
Safety Car
Joined: Jan 2009
Posts: 3,503
Likes: 1,715
From: High Mountains of New Mexico
2023 C2 of the Year Finalist - Unmodified
2021 C2 of the Year Finalist - Unmodified
2015 C3 of the Year Finalist
My '67 L79 with A/C and P/S has an HP suffix, original engine, all shown on tank sticker.
Safety Car
Joined: Jan 2009
Posts: 3,503
Likes: 1,715
From: High Mountains of New Mexico
2023 C2 of the Year Finalist - Unmodified
2021 C2 of the Year Finalist - Unmodified
2015 C3 of the Year Finalist
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Melting Slicks
Joined: Aug 2010
Posts: 2,823
Likes: 484
From: El Dorado Hills CA
Race Director
Joined: Apr 2005
Posts: 11,286
Likes: 2,146
From: Bowling Green, Kentucky
