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1967 SS 396

1967 SS 396 Engine Codes

Engine

Transmission

Notes

Code Size-Carb HP-RPO    
ED 396-4 325-L35 Manual-3/4  
EF 396-4 350-L34 Manual-3/4 Heavy Duty Clutch
EG 396-4 375-L78 Manual-3/4 Holley Carb/Solid Cam
EH 396-4 325-L35 Manual-3/4 A.I.R./Rochester Carb
EJ 396-4 350-L34 Manual-3/4 Heavy Duty Clutch/A.I.R.
EK 396-4 325-L35 Powerglide  
EL 396-4 350-L34 Powerglide  
EM 396-4 325-L35 Powerglide A.I.R.
EN 396-4 350-L34 Powerglide A.I.R.
ET 396-4 325-L35 TH-400  
EU 396-4 350-L34 TH-400  
EV 396-4 325-L35 TH-400 A.I.R.
EW 396-4 350-L34 TH-400 A.I.R.
EX 396-4 375-L78 Manual-3/4 Holley Carb/Solid Cam/A.I.R.

The 396 8-cyl engine was only available in the 13817/67 SS 396 series and both the 13480 and 13680 El Camino. The L35 396 cid 8-cyl engine was the base, or standard, engine in the SS 396. GM reports 1,865 L35 engines ordered as options and these would have been installed in the El Camino series.

1967 396 V8 Engine Production

The base engine for the SS 396 series for 1967 was the L35 396 cid 325-hp engine. This engine (along with the L34 and L78) was also an optional engine in the El Camino and 2,565 L35 engines were sold in the El Camino body style. There were a total of 63,006 SS 396s, sport coupes (59,685) and convertibles (3,321), sold. There is no way to know how many of the base L35 engines were sold in SS 396 sport coupes and/or convertibles. One can only take the number of L35 options known to be sold in the El Camino body style (12,565) and subtract that from the total number reported by Tonawanda and arrive at a number that would include Total L35 SS 396 Chevelles and Service Engines.

One cannot take the number of L34 or L78 engines into account for SS396 sales only since these were also available in the El Camino and only a total number of L34 and L78 options are known; what body style they went into is not known. Since it cannot be determined how many L35 engines were sold in the base SS396 series (Total L35 Engines) and the number of L35 service engines cannot be determined.

L35 engines are equipped with a Rochester (or Carter equivalent) Quadrajet carburetor; all L34 and L78 engines were equipped with a Holley carburetor.

RPO HP Transmission Suffix Production Notes
L35 325 Manual ED 17,080  
L35/K19 325 Manual EH 04,172  A.I.R.
L35/M35 325 Powerglide EK 05,666  
L35/K19/M35 325 Powerglide EM 00,892 A.I.R.
L35/M40 325 TH-400 ET 09,166  
L35/K19/M40 325 TH-400 EV 02,725 A.I.R.
        49,701 Total L35 Engines
        47,783 * Total L35 Chevelles
See paragraph above concerning service engines. 01,918 Service Engines
           
L34 350 Manual EF 13,914  
L34/K19 350 Manual EJ 02,176 A.I.R.
L34/M35 350 Powerglide EL 00,160  
L34/K19/M35 350 Powerglide EN 00,018 A.I.R.
L34/M40 350 TH-400 EU 01,784  
L34/K19/M40 350 TH-400 EQ 00,346 A.I.R.
        18,398 Total L34 Engines
        17,176 Total L34 Chevelles
96.1% of total L34 engine production went into Chevelles in 1966. 01,222 Service Engines
           
L78 375 Manual EG 596  
L78/K19 375 Manual EX 034 A.I.R.
        630 Total L78 Engines
        312 Total L78 Chevelles
        018 Service Engines
97.1% of total L78 engine production went into Chevelles in 1967

* It is known that 12,565 of these L35 engines were sold as options in the two El Camino series.
   

© Chevelle SS Guide
© Chevelle SS Guide
© Chevelle SS Guide
The base 325-hp L35 engine with snorkel air cleaner assembly. All 396 cid engines came with flash chromed rocker arm covers, a flash chromed air cleaner assembly lid, and this instance on an L35 engine with positive ventilation, a flash chrome oil breather All 1967 Chevelle 396 engines have this 'dent' on the rear of the drivers side rocker arm cover for power brake clearance whether power brakes were ordered or not.

© Chevelle SS Guide
When optioned with Closed Engine Positive Ventilation System (RPO K24) the oil breather cap was replaced with a hose assembly to route crankcase fumes from the cylinder head to the bottom of the air cleaner assembly to help reduce emissions.

© Chevelle SS Guide
When equipped with GM's Air Injection Reactor emission system (RPO K19), the oil breather was replaced with a hose running from the oil breather location to the base of the air cleaner assembly and is referred to as a 'closed positive ventilation' system. Crankcase vapors that would normally have escaped into the air from the oil breather cap are now directed back into the airflow to the carburetor.

© Chevelle SS Guide
The 350-hp (RPO L34) engine came with the same flash chrome rocker arm covers but sported an open element air cleaner assembly with a flash chrome lid. All 350-hp engines were equipped with a closed positive ventilation system - note the hose running from the rocker arm cover to the base of air cleaner assembly.

© Chevelle SS Guide
This 350-hp engine is outfitted with GM's Air Injection Reactor emission system (RPO K19).

© Chevelle SS Guide
The special high performance 375-hp (RPO L78) engine featured a solid lifter camshaft, bigger rectangular port heads, an aluminum intake manifold, and bigger Holley carburetor. Note the deep groove pulley on the alternator to help retain the alternator belt at high RPMS.

© Chevelle SS Guide
The carburetor return spring was now attached to lower portion of the carburetor throttle linkage and the ignition coil bracket, not to the upper alternator brace as it was in 1966. See 1966 Engines page.

© Chevelle SS Guide
The underside of the open element air cleaner assembly lid with service information.

Camshaft Specifications

© Chevelle SS Guide

© Chevelle SS Guide - Bruce Testor Photo
Note the oil groove in rear cam journal of this 396 V8 camshaft on the left. Both 1965 and 1966 396 V8 engines require this groove along with corresponding rear cam bearing. Most aftermarket camshaft manufacturers DO NOT list the 65/66 396 V8 in their catalogs due to this groove. However, any later camshaft will work if grooved and most aftermarket cam suppliers will either groove the cam for a nominal fee or send you the specifications so you can have your local machine shop perform the operation