Re: 89 T-bird v6 in 2000 Mustang?
Yah keep in mind your current 3.8 is a split port engine...the supercoupe's are single ports. You'll be going back in technology and power with the m90 swap. Your output with the stock pulley setup on the m90 will be right around the stock hp output of your split port 3.8.
Now with some pulley swaps and some tuning you could probably gain more hp/tq than the split port, but it will take some serious work and time to make everything mesh properly.
12 Black GT500 SVT PP l 2.6 Pulley/Idler l Airaid l o/r X l 305 NT555R's l Recaros l
04 Azure Blue Mach 1 / 03 Sonic Blue 3.8 / 14 Sterling Grey F150 FX4 402A 5.0 / 11 GT500 R.I.P.