1969  Chevelle Engine Photos & 396 cid Engine Production Numbers

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A few things should be mentioned about the 1969 396/402 engines. Towards the end of the model year the 396 cid engine was increased to 402 cid. Rumors abound for the reason of the 402 cid existence. One is that Tonawanda has a lot of bare blocks rusting away and decided to bore them +0.030 to clean them up. GM wouldn't do this. It is believed the increase in bore size  was done in preparation of 1970 (when all 396 cid engines were really 402 cid) because engines over 400 cid had lower restrictions on smog regulations.

This was the first year the SS396 was discontinued as a separate series and became an option just like air conditioning, a radio, a vinyl top, etc. This is also only year that the SS Equipment option could be ordered on anything other than a Malibu sport coupe, convertible, or pickup. The SS Equipment option was also available on the two 300 Deluxe series body styles, the 13427 coupe (2-door post) and the 13437 sport coupe (hardtop).

Not all 396 engines went into RPO Z25 optioned Chevelles. There was also a "police package" that could be ordered with a 396 engine in a 300 Deluxe 4-door sedan body style. It's believed 323 non-SS396 optioned Chevelles were built. This figure is arrived at by subtracting the number of RPO Z25 (SS 396 Equipment) options sold from the total of the three 396 engine options.
RPO L35 = 59,786
RPO L34 = 17,358
RPO L78 =  9,486
================
Total      = 86,630
RPO Z25 = 86,307
================
                     323 396 engines sold not accounted for via RPO Z25

There is another discrepancy in the L78 engine and L89 aluminum head option numbers vs. production numbers. According to Tonawanda numbers 8,876 L78 engines were built and 412 L89 aluminum head options were built. When the L89 option was included the suffix code on the L78 engine changed. The L78 engine totals below indicate only the iron head suffix codes yet documentation from GM indicates 9,486 L78 options were sold - a difference of 610 "missing" engines. Either the Tonawanda engine production totals are wrong or the GM reported L78 sales is wrong. I tend to believe, but cannot prove, the GM reported L78 sales figure is a typographical error and would be 8,486. Subtracting this 8,486 from the Tonawanda reported 8,876 production would leave 390 service engines which is in line with other engines. For now, I suppose we'll never know for sure.

The 1969 model year was also unique in that Yenko Chevrolet worked some GM back-door deals via the Fleet & Special Order department to obtain via Central Office Production Order (COPO) means to get 427 cid engines installed in various Camaros and Chevelles. For that reason RPO L72, the 427/425 from the passenger car line, are included here as well.

It's believed these new 402cid engines can be identified in 1969 by the three letter suffix code. Anyone with good, readable, engine pads with a 3-letter suffix please send it to me for inclusion on this page.

1969 396 V8 Engine Production

RPO HP Transmission Suffix Production Notes
L35 325 Manual JA 32,999 396 cid
L35 325 Manual CJA 01,528 402 cid
L35/M40 325 TH-400 JK 24,771 396 cid
L35/M40 325 TH-400 CJK 01,386 402 cid
        60,684 Total L35 Engines
        59,786 Total L35 Cars
98.5% of total L35 engine production went into Chevelles in 1969. 00,898 Service Engines
           
L34 350 Manual JC 12,454 396 cid
L34 350 Manual CJC 00,370 402 cid
L34/M40 350 TH-400 JE 5,034 396 cid
L34/M40 350 TH-400 CJE 00,079 402 cid
        17,937 Total L34 Engines
        17,358 Total L34 Cars
96.8% of total L34 engine production went into Chevelles in 1969. 00,579 Service Engines
           
L78 375 Manual JD 7,356 396 cid
L78 375 Manual CJD 0,033 402 cid
L78/M40 375 TH-400 KF 1,471 396 cid
L78/M40 375 TH-400 CKF 0,016 402 cid
        8,876 Total L78 Engines
        9,486 Total L78 Cars
See L78/L89 notes above -610 More cars than engines
           
L89 375 Manual KG 333 396 cid
L89 375 Manual CKG 012 402 cid
L89/M40 375 TH-400 KH 066 396 cid
L89/M40 375 TH-400 CKH 001 402 cid
        412 Total L89 Engines
        400 Total L89 Cars
97.1% of total L89 engine production went into Chevelles in 1969. 012 Service Engines
           
L72 425 Manual MQ 277 427 cid COPO
L72/M40 425 TH-400 MP 096 427 cid COPO
        373 Total COPO 427 Engines
        323 Total COPO 427 Cars
86.6% of total L72 engine production went into Chevelles in 1969. 050 Service Engines
           

Engine ID Stampings

11/26/2012
T0927HQ - Tonawanda, September 27 350/255hp w/manual transmission.
Suspect this is for a Canadian Pontiac (GM division 7).

File Photo
T1104JK - Tonawanda, November 4 396/325hp w/TH400 transmission.

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Partial VIN stamping for T1104JK engine above. Note the difficulty often found in reading in this area (344635).

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T1230JK - Tonawanda, December 30 396/325hp w/TH400 transmission.

Courtesy Greg Wilson
T0217JA - Tonawanda, February 17 396/325hp w/manual transmission.
Courtesy Greg Wilson

File Photo
T0313HB - Tonawanda, March 13 350/300hp w/TH350 transmission.
Note the partially visible CON VIN on this Baltimore Chevelle engine.

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T0425DD - Tonawanda, April 25 207/200hp w/TH350 transmission.

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T0416JK - Tonawanda, April 16 396/325hp w/TH400 transmission.

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T0418JA - Tonawanda, April 18 396/325hp w/manual transmission.

File Photo

File Photo
T0624JK - Tonawanda, June 24 396/325hp w/TH400 transmission.
The leading '0' could be correct as at least one other 1969 Baltimore Chevelle has been found to have this leading '0' as well as one Fremont Chevelle.

Atlanta

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An Atlanta partial VIN stamping.

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Courtesy Greg Wilson
Courtesy Greg Wilson

Baltimore

File Photo
T0610JD ~ 19B394809

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T0419HC ~ 19B383315 Note on a small block the Tonawanda engine stamp is on the right side of the engine pad while the VIN derivative is on the left.

Framingham

03/02/2011
T1022JE - Tonawanda, October 22 396/350hp w/TH400 transmission.

File Photo
T0211KF ~ Tonawanda, February 11 396/375hp w/TH400 transmission.

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T0409KF - Tonawanda, April 9 396/375hp w/TH400 transmission.

Kansas City

File Photo

File Photo
Courtesy Dean Call
Ongoing research indicates that the Atlanta & Kansas City plants used this alternate location for 396 engines. Note this example was stamped several times.

File Photo

File Photo

Fremont

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Note leading '0' in the partial VIN stamping.

Also see this page for more partial VIN locations and examples.