Originally Posted by roadkill2
Again, not being a wiseass, but . .
Tire guages aren't the same, one reads one thing, the next may be a half pound different. Same with Dynos . . It's all relative. When you changed Dyno's you started over . .
Jus' a SWAG here, but take 2° out of it, lean it out two steps and try it again. Dunno what yer air is but I've never seen many 500" alky engines that liked more than 33-34° of lead . . 'Course, I've always dealt with blown alky engines so there may be some difference.
Take it to the track, as I said in another thread, the race track is the most honest Dyno ever created . .
gotta agree again! wow, great advice 8)
-it sure does sound rich with those readings, as roadkill2 sez, why not lean it out and see if it responds ET wise..
-also agree on taking a bit of timing away to start with..you can always play with that once you get the fuel closer..