Engine Designations & Cam Durations
Thread Starter
8th Gear
Joined: Jul 2006
Posts: 8
Likes: 0
From: Seattle WA
Engine Designations & Cam Durations
I think just about everyone knows LT1, L88, L82, etc. but does anyone know the codes for the following engines?
68’ Base 327
69’ Base 350
69’ 350/350
On a separate note, does anyone know the duration of the stock 68’ 327 cam at .050”?
Finally, was the LT1 the only small block in the C3 to use mechanical lifters?
Thanks!
68’ Base 327
69’ Base 350
69’ 350/350
On a separate note, does anyone know the duration of the stock 68’ 327 cam at .050”?
Finally, was the LT1 the only small block in the C3 to use mechanical lifters?
Thanks!
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
I think just about everyone knows LT1, L88, L82, etc. but does anyone know the codes for the following engines?
68’ Base 327
69’ Base 350
69’ 350/350
On a separate note, does anyone know the duration of the stock 68’ 327 cam at .050”?
Finally, was the LT1 the only small block in the C3 to use mechanical lifters?
Thanks!
68’ Base 327
69’ Base 350
69’ 350/350
On a separate note, does anyone know the duration of the stock 68’ 327 cam at .050”?
Finally, was the LT1 the only small block in the C3 to use mechanical lifters?
Thanks!
68’ Base 327 - L79
69’ Base 350 - See below.
69’ 350/350 - L46
GC: 350ci, 300hp MT
GD: 350ci, 300hp MT
HW: 350ci, 300hp MT
HX: 350ci, 350hp MT
HY: 350ci, 300hp MT
HZ: 350ci, 300hp AT
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
The L79 327 was the 327 350 horse. The base 300 horse 327 was just called the base motor.
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Missed the parts on C3s using solid lifters. ithought you meant SB motors. My bad.
Last edited by Gordonm; Sep 14, 2007 at 09:00 PM.
Drifting
Joined: May 2003
Posts: 1,634
Likes: 2
From: Melbourne, Victoria, Australia, the World
For 69 the base (300HP) was L48 and the 350 horse was L46.
The suffix codes as listed by Durango can be decoded to the engine size, HP, trans application and some options.
I believe you are correct in stating the LT-1 was the only C3 small block with solid lifters but they were used in HI PO C2's as well.
Can't help with the .050 duration specs
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
YES! LT-1 was the only small block Vette with a "real" cam in it (solid lifter cam.) My wife thinks her 1970 LT-1 roadster needs a BIGGER cam like my 72 LT-1 has (thats why I love her so much!) Quote: it's too quiet! I want a motor that lopes at idle like your 72 Vette (motor is a 370HP LT-1 in her car.)
Instructor
Joined: May 2007
Posts: 149
Likes: 0
From: jarrett north carolina
engine numbers
hi! i have a 76 that is a project and i think the motor has been replaced, if someone can help identify it-- these are the # vo9izcls.--there are some small # also on the flat place and they are 1g5405823.does this make any sense?thanks---john
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
You can go all the way back to the 265 ci small block engines and all the high HP engines were solid lifter engines. Even some of those in the passingers cars were solid lifters. The dual quads and FI cars were split as some FI`s were solid and some hydraulic, the same with quads. However the LT1 350`s were the only solid lifter engines in the C`3`s. ...
Le Mans Master
Joined: Apr 2005
Posts: 6,357
Likes: 427
From: Seattle Area WA
To answer the poster's second question, if it is a 350HP L-79 327 then the durations are 224/224 degrees at .050". If it is a base 300HP motor, then the durations should be 194/202 degrees at .050".
