QUOTE FROM CAMARORUS:
"Rick, 70 L-78 Camaros were first built in January of 70. My Norwood VIN is 506735 and was mfg 01C as were several others Ive heard about. FYI, my eng assy is T1112CKO (Nov 12, 1969)
A few 1970 L-78 Camaros I feel have been incorrectly restored with the 1969 Style "J" hook left side smog tree.
I want to believe that ALL 1970 L-78 Camaros had the style of drivers side smog "trees" that your Chevelle does in the picture.
There is at least one diagram in the 70 Camaro assy manual showing your set-up.
I have never seen a picture of a ORIGINAL 70 L-78 Camaro engine compartment. Fo some uncanny reason, NO ONE can produce a real picture or magazine article back in the day showing a stock unmolested 70 L-78 Camaro
Can you support my thinking.........."
CORRECT SMOG TUBE USAGE FOR 1969 396, 427 AND 1970 396, 454
JULY 1 1969 CAMARO CHEVELLE CHEVY II PARTS CATLAOG LIST THE FOLLOWING FOR SMOG TUBES:
3.675 HOSE- ADAPTER-EXTENSION-PIPE-SEAL-TUBE, Air Injection Reactor
69 CAMARO, CHEVELLE, CHEVY II (396) w/ C.A.C (exc. Sp H/Per.) . . . . . . . . . . . . . . . . . . . 3940936 pipe assy. L.H.
69 CAMARO, CHEVELLE, CHEVY II (396) w/ C.A.C (exc. Sp H/Per.) . . . . . . . . . . . . . . . . . . . 3940987 pipe assy. R.H.
69 CAMARO, CHEVELLE, CHEVYII (396) (w/ H/per, Sp. H/Per) . . . . . . . . . . . . . . . . . . . . . . 3940933 pipe assy. L.H.
69 CAMARO, CHEVELLE, CHEVYII (396) (w/ H/per, Sp. H/Per) . . . . . . . . . . . . . . . . . . . . . . . 3940938 pipe assy. R.H.
THE 1969 CAMARO ASSEMBLY PROVIDES THE PART NUMBER AND DIAGRAM SHOWING THE CORRECT USAGE FOR THE
SHORT STYLE L.H. SMOG TUBE WHICH WAS USED IN 1969 ONLY ON 396,427 WITH A/C:
UPC C60 SHEET C8
BOX 1 3940987 PIPE ASM-L.H.
THE 1970 CAMARO ASSEMBLY MANUAL CAN BE CONFUSING WHEN LOOKING AT SMOG TUBES FOR L78 AND LS6 ENGINES
DRAWINGS ALTERNATE USING SHORT AND LONG (“J” HOOK STYLE) SMOG TUBES
HOWEVER IN THE 1970 CAMARO ASSEMBLY MANUAL UNDER UPC L78 SHEET A9 THE CORRECT LONG STYLE TUBE IS SHOWN IN
THE DRAWING AND IS LISTED AS 3981061
JANUARY 1 1970 CAMARO CHEVELLE NOVA PARTS CATALOGS LIST ONLY THE 3981061 L.H. PIPE ASSEMBLY FOR
SPECIAL HI PERFORMANCE 396 AND 454 AND DO NOT LIST THE 3940987 SHORT PIPE ASSEMBLY FOR USE
ON 1970 396 454 APPLICATIONS
THE 3940938 R.H. PIPE ASSEMBLY USED ON 1969 NON A/C ENGINES WAS CARRIED OVER FROM 1969 AND WERE USED ON
1970 396 AND 454 SPECIAL HI PERFORMANCE APPLICATIONS
THE 3981061 L.H. TUBE USED ON 1970 L78 AND LS6 ENGINES REPLACED THE 3940933 L.H. TUBE USED ON 69 396,427 ENGINES
HOPE THIS CLEARS UP ALL THE DISINFORMATION
USER-3965175