Loudmouth LS1

iTrader: (10)

Is 24.5 degrees timing at wot too much? She's been doin fine like that (or so it seems) on the 100, but I decided to try the 150's at a buddy's dyno day today with the a/f meter to see if the stock pump would handle it, and I didn't think about dropping the timing and left it at 24.5. Stocker pump didn't seem to like the 150's very much, went lean, and didn't richen up and I let out way early. Then I put the 100 shot jets back in and she even went lean on the 100's, so I was thinkin the plugs probably got fried on the 150 shot, so I tried motor, went lean there too. I pulled the plugs when I got home and all the electrodes are still there, but they're scailey (sp?) and white with a tinge of like seafoam greenish color. I was wonderin what the hell the seafoam greenish color is, and a buddy of mine said it sounds like I may have had too much timing for the shot and the octane. So I was just curious what you guys think, where should I have the timing at on the 100's and 150's cuz i'll be putting my racetronix pump in soon and the 150's will be the next step, and then more from there!

PS - She was running fine earlier in the day when I originally dyno'd on the 100 jets, put down 572 rwhp, then I put her back on just to try the 150's and that's when the problems started, and she put 598 rwhp on the 150 pass letting out almost immediately after gettin on it.

Phil99vette

iTrader: (11)

I don't think so. We're running 23 degrees, 346cid, 12.25:1 CR and a 250 shot.
Phil

Loudmouth LS1

iTrader: (10)

Holy ****, that's on 93 octane?