I ran an injected alcohol 499 low deck for approximately 10 years, 1-300 1/8 mile passes every year, 750ish hp, arp main studs and aluminum main caps, eagle crank, rods and Ross pistons, half fill, finally cracked a cylinder wall on #8...never saw a web crack...shifted at 6800, don't know if it makes a difference but this block was first in a hardtail pipe rack then a 4 link pipe rack, spanned 1998 to 2008. Scattered it all over Denton Dragway after sleeving the cracked #8 hole...( 5 Dyno pulls, 3rd pass down the track) damage was do severe myself and 2 "experts" couldn't figure out what let go first...managed to save the intake, distributor and fuel injection system...oh yeah and valve covers...(most likely suspect was something to do with 7&8 rod journal)...