7upedition

^agree, factory motors (the few that are left) rolled off the assembly line with the intentions of being 87 octane cars, i run 14* timing and 89 octane, no pinging. To run 93 on a stock motor, stock timing, it's ineffiecent.

grumpyphillips

I've got a stock motor and if I don't run 93, my car runs like crap. It gets really bad gas mileage with anything under 93.

7upedition

^ i find that very hard to believe, when the last time it had a full tune up? is the timing advacned?

grumpyphillips

About a year ago, I put on new plugs and wires. I have a new MSD 6AL box laying around that I was going to put on. As fas as I know the timing is stock.

7upedition

Yea, I'd verify the timing and look into cleaning IAC, TB, verify TPS voltage, and base idle. When you put the MSD 6AL in look into replace the distributor, or at least the cap and rotor. Good Luck, your timing may be advanced.

subhumantat

so is it bad if when i put my timing light on and it reads 20* and that is when it runs good, mind you the carb is rebuilt yet still needs to be adjusted do to giving to much gas

7upedition

^ is the dizzy disconnected when your timing it?

subhumantat

no put i should point out that i went with a new points dizzy to make the swap easier, any problems with that or what?

7upedition

disconnect the dizzy then check base timing... good article in the stickies on this courtesy of blue

88BlueGT

Well, courtesy of someone else for writing it and courtesy of me for stealing it