Compression on Factory 383

[flagcraig]

In 1969 what were the factory compressions for a 383 motor?

Thanks.

[1 Wild R/T]

Advertised or measured?  Advertised 10-1     http://www.hamtramck-historical.com/images/dealerships/DealershipDataBook/1969/69_Charger0011.jpg 

Measured typically in the  8.6-1 to 9-1 range... 

With the short stroke & large chamber volume it's a challenge to build compression...

[Chryco Psycho]

383 l code was lower compression than the Magnum N code
 realistically all the blocks are higher deck than speced at so realistic is more as wild said lower than advertised , blueprinted using thin shim head gaskets & true volumes you can get lose to 10:1

[flagcraig]

Can I tell if it is a I code or N code without digging into the block?

Thanks.

[Chryco Psycho]

What year some L codes were cast crank .
should be stamped 383 HP if it is a magnum

[flagcraig]

69

[1 Wild R/T]

If it still has it's original pistons & it has HP stamped on the pad then it'll be high 8's low 9's C/R wise...