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Identify 1969 L46

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Old Jul 19, 2011 | 01:04 PM
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Default Identify 1969 L46

Can you guys list the Characteristics to identify a '69 L46 (expansion tank, tach redline, etc.)?
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Old Jul 19, 2011 | 01:14 PM
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HW, HX or GD on the stamp pad.
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Old Jul 19, 2011 | 01:20 PM
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Do you have any original documentation with the car? Invoice, window sticker, tank sticker, POP?

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Old Jul 19, 2011 | 01:20 PM
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Thanks Mike, can you provide as many of those NCRS identifying features as possible?
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Old Jul 19, 2011 | 01:22 PM
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Originally Posted by Easy Mike
Do you have any original documentation with the car? Invoice, window sticker, tank sticker, POP?

Negative Mike. I'm trying to confirm that it is a true L46 by as many features as possible.
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Old Jul 19, 2011 | 01:49 PM
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Follow Mike's advice. What are the stamped numbers on the engine pad? The L-46 was an options package. Any or all of the package could have been installed by a previous owner. If the engine is original, the engine suffix code and VIN derivitive stamped on the pad will tell the story.

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Old Jul 19, 2011 | 02:13 PM
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I agree, but there are still other features I would like to investigate. I know the carburetor on the L46 is a hard to come by item.

I'm looking for the full details of the options package included with the L46.
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Old Jul 19, 2011 | 04:27 PM
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Best get a copy of the NCRS judging guide and all the other 'chevy by the numbers' stuff.
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Old Jul 19, 2011 | 04:39 PM
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Hi
This is what I know.
The L46 had several different block casting numbers......the last one used in later 69 (June?) until the end of the run and later years ended in "010". Not sure on the earlier ones. The engine had 11:1 pistons, 202 double hump heads, special CAM w/ Hyd lifters. a (70)29207 DA Rochester carb, cast iron intake, finned aluminum valve covers, A.I.R. pump with 21299 Diverter and 3932458 DA Pulley. Expansion tank was used IF the the car had the aluminum radiator. Several different cooling systems were used throughout the production. My Aug 69 car has a copper radiator with no tank (confirmed through Bizocco book "The 1969 Stingray.....great book!)

A note on the carb......MANY MANY service replacements on the market. You need to get one that has either a 29207 DA or 7029207 DA. Then check the date code. IMO, ANY carb that reads "0729207 DA or no DA is a sevice replacement.

Pretty sure a 4 speed was only option. Tach redline in 6000.

I'll remember more and post.....hope this helps.
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Old Jul 19, 2011 | 07:45 PM
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Originally Posted by avalonjohn
Hi
This is what I know.
The L46 had several different block casting numbers......the last one used in later 69 (June?) until the end of the run and later years ended in "010". Not sure on the earlier ones. The engine had 11:1 pistons, 202 double hump heads, special CAM w/ Hyd lifters. a (70)29207 DA Rochester carb, cast iron intake, finned aluminum valve covers, A.I.R. pump with 21299 Diverter and 3932458 DA Pulley. Expansion tank was used IF the the car had the aluminum radiator. Several different cooling systems were used throughout the production. My Aug 69 car has a copper radiator with no tank (confirmed through Bizocco book "The 1969 Stingray.....great book!)

A note on the carb......MANY MANY service replacements on the market. You need to get one that has either a 29207 DA or 7029207 DA. Then check the date code. IMO, ANY carb that reads "0729207 DA or no DA is a sevice replacement.

Pretty sure a 4 speed was only option. Tach redline in 6000.

I'll remember more and post.....hope this helps.
Thanks John Thats what I was looking for. Please do post anything else if you think of it.
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Old Jul 19, 2011 | 08:09 PM
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Originally Posted by foxymophandlpapa
Thanks John Thats what I was looking for. Please do post anything else if you think of it.
correction..I believe the "010" block started very early aug 69....and the divereter was a 29199...
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Old Jul 19, 2011 | 08:13 PM
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Originally Posted by foxymophandlpapa
Thanks John Thats what I was looking for. Please do post anything else if you think of it.
also, alternator was a 42 amp 1100859 unless it had TI or AC, then it was the 61 amp 1100882 (Note:..my L46 has neither Ac or Ti and I have an 882 on mine. It is the right date, old as dirt, and I think since it was the first day off the re-tool period in early Aug 69, they grabbed it off the shelf....NCRS will ding me though.
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Old Jul 19, 2011 | 08:29 PM
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Just for clarity, the various block casting numbers were used on both small blocks, not just the L46.

Same applies to the alternator numbers.
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Old Jan 9, 2012 | 12:46 PM
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Default L-46

I have a true L-46 and the tach is 7000





Originally Posted by avalonjohn
Hi
This is what I know.
The L46 had several different block casting numbers......the last one used in later 69 (June?) until the end of the run and later years ended in "010". Not sure on the earlier ones. The engine had 11:1 pistons, 202 double hump heads, special CAM w/ Hyd lifters. a (70)29207 DA Rochester carb, cast iron intake, finned aluminum valve covers, A.I.R. pump with 21299 Diverter and 3932458 DA Pulley. Expansion tank was used IF the the car had the aluminum radiator. Several different cooling systems were used throughout the production. My Aug 69 car has a copper radiator with no tank (confirmed through Bizocco book "The 1969 Stingray.....great book!)

A note on the carb......MANY MANY service replacements on the market. You need to get one that has either a 29207 DA or 7029207 DA. Then check the date code. IMO, ANY carb that reads "0729207 DA or no DA is a sevice replacement.

Pretty sure a 4 speed was only option. Tach redline in 6000.

I'll remember more and post.....hope this helps.
Reply
Old Jan 9, 2012 | 08:58 PM
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the L-46 tack is only a 6000 red line, 4-speed only, 4 bolt main, forged pistons, and crank, big valve heads, 8" balancer,
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Old Jan 9, 2012 | 09:04 PM
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Originally Posted by bugzbunny
I have a true L-46 and the tach is 7000
Really? I've never seen a 7K redline on a L-46. All the Tachs go to 7K this year. Redline is 6K.
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Old Jan 10, 2012 | 12:04 AM
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My 69 L46 with HX suffix code means hi perf, 4 sp with AC. I also have PS and PB.
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To Identify 1969 L46

Old Jan 10, 2012 | 12:38 AM
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Originally Posted by avalonjohn
also, alternator was a 42 amp 1100859 unless it had TI or AC, then it was the 61 amp 1100882 (Note:..my L46 has neither Ac or Ti and I have an 882 on mine. It is the right date, old as dirt, and I think since it was the first day off the re-tool period in early Aug 69, they grabbed it off the shelf....NCRS will ding me though.
hold it... the L-46 also used a 42 amp 1100900 alternator on later cars, and is very expensive. Ask me how I know.

Tach redline is 6000, not 7000. There is no 7000 I think.

Coil is 1115270 & 272

Distributor is 1111493 or 491

I have an aluminum radiator and overflow tank.

The smog pulley is often misidentified as the 234, but the 350 hp cars used 3932458 DA.

Emission label code is CF or CK

Valve covers are the aluminum finned.

Heads are 3921786 or 187.

As John said, real 207 carbs are very rare and very expensive

Thats all I can think of right off

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Old Jan 10, 2012 | 02:16 AM
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That's a Real nice looking engine bay Steve. Tony
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Old Jan 10, 2012 | 09:01 PM
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Originally Posted by 69 Convertible
That's a Real nice looking engine bay Steve. Tony
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