One degree above top dead center.
110,000 is the base price
trying to set base timing on a 97 Chevy c1500 with a 5.7 engine the wire to disconnect to set base timing is ?
Its the brown wire from the distributor, goes to the fuses/relays on your firewall. unhook that and you will have your base timing.
Use a timing light with vacuum advance disconnected set base timing to 6 degrees
The base ignition timing for a 1974 Chevy 454 engine is between 8 and 12 degrees below top dead center. A timing light is needed to accurate set ignition timing.
on front top deck of block, left side, by base of cyl head.
$3,176 base price and $5,548 maximum price possible with options (but without taxes).
The 1975 L48 Corvette engine was the "base" engine and never was offered with aluminum heads or a 4-bolt main block from the factory. The L82, offered in 1975 had 4-bolt mains but still only had cast iron heads.
That requires some one that has an OBD2 engine scanner and KNOWS how to use it. The timing is electronic controlled. You can set the base timing by ear.
91 octane, unless you back off the stock base line timing then you could run lower.
In 1957 the Corvette's base price was $3,176.
Base engine - 165 hp (123 kW) L82 - 205 hp (153 kW)