5.0's usually come with 1.62:1 drives
5.7's come with the 1.47:1
there actually isnt a 1.5:1 drive. it has always been 1.47:1 for them
Horsepower
Engine
Year
Ratio
120 thru 140
4 cyl. One drive
1971 thru 79
1.94 / 20-24
170 thru 190
4 cyl. One drive
1971 thru 79
1.81 / 17-19
165...