Shelby Turbo-Charger(non-GLHS), with good tires(not slicks/cheaters), could run 14.80's. Hot Rod mag beat the piss out of 5.0L HO LX(14.6's), 5.0L GT(14.88 BEST ET), 350 IROC Z(14.88 BEST ET). That was an '86 Shelby BTW, when new.
The problem with the Daytonas was the weight went up faster than the advances in the engine/turbo tech, My '88 ShelbyZ weighs as much as My '69 Dart Custom HT w/the 'teener & 4-gear did, not a favorable move. The fact that the exhaust necked-down to 1&7/8" by the side of the fuel tank didn't help.
The '89-'90 5.0L 'stangs with the timing jacked up & the intakes iced-down were doing ~97-98mph in the 1/4, & 13's mid-upper with DOT Quick-times etc. & 3.73's.
My bone-stock ShelbyZ only topped out @88+, so those true, had a long way to go at that point. The Omni & Charger bodies were much lighter, & a way better choice body by 5-600#.
lx 5 spd stangs ran 14.4 14.5@96mph all auto stangs were dogs along with gta ta irocs i mean idogs and glh/daytona
my 87 lx 5spd coupe stock was low 14s@98 with 2.73s i prolly had 250 passes on it never iced the intake lol i bought it new i lived it at the track not me and buddy blew off stangs bs there tons off road test as well stock glhs dont blow off stangs i saw glhs in the high 13s not stock again 95% of those glh sewing machine sounding cars ran 15.5
14.8 was the best at low 90s mph that is not blowing off 5.0 stangs
350 irocs were dogs same thing quick to 60 mph with the torque then nose over and slow as chit after a 100 mph the idog was even slower but still would walk a glh or daytona
86 gt mustangs 2.73s not 3.08s were 14.6@94
my lx sucked off the line 2.12 best 60 foot on trash 225 60 15s gatorbacks zero traction still trapping 98 mph with 2.73s
hot rod also ran a 1987 yellow coupe 5 spd 3.08s vht spray 13.9@99 mph
mustangs were traction limted running 96 to 99 mph traps turbo 2.2 were low 90s trap speed did well 0 to 60 because of traction chit top end stangs were 140 mph gn shutdown@ 127 mph glh were slow as piss after 60
they ran a 14.0 time 0 to 60 @ 6.1 6.2 then were slow as chit same as irocs the gta ta
the quick car was the buick gn the stang coupe and the corvette 14.3 @ 95 to 98 mph
ice on the intake was buick gn chit the asshat drivers i could beat the good gn drivers sucked the paint off me 3 cars out of the hole we trapped the same
from a roll it was dead even with stock 87 gns until the factory fuel shutoff@127 mph for the gn then he was gone
trap speed is what matters stangs were 96 to 99 2.2 turbos were low 90s and high 80s
i raced them all the track doesnt lie
I will say for a 4 cylinder they were quick they didnt sound good nor did the gn v6 nothing beats the sound of a v8 i drove all the cars before i bought the lx it wasnt close and for $10200 it was a steal gt stangs were 16k lol idogs were 14k the shelby you speak of was atleast 13k
time to bow out
