V V 4 SPEED 1 nANs M1 ss16N V VV VV V V 1971 CORVETTE 4 SPD TRANSMISSION SPEEDOMETER GEAR CHART I 4 337 I I U 4 343 I 4 I 8 4 330 REAR 1 V GEAR V GEAR 4 329 A KEY AXLE 1 SPEEDD SPEEDO ADAPTER SPEEDO RATIO REAR TIRE SIZE DRIVEN DRIVE SPEEDO ADAPTER 0s 1 10 16 4 1 3 3987919 3978758 1 2 3 36 F70 16 E 3987920 3978758 9 65 F7Q I6 3987922 3978768 6 V Y 3 70 F70 I5 In 39879122 3978768 1 Y V 4 11 F70 16 3987921 r 3978758 8477965 1 867209 4 66 F70 16 L J L 398792Q 9 3978758 6477964 V I f 867209 1972 CORVETTE 4 SPD TRANSMISSION SPEEDOMETER GEAR CHART I I 4 337 4 343 I 4 330 REAR GEAR GEAR 4 329 KEV AXLE SPEEDD SPEEDO ADAPTER SPEEDD RATIO REAR TIRE SIZE DRIVEIII DRIVE SPEEDO f ADAPTER 3 08 F70 16 3987920 3978758 I V I 3 36 F70 15 3987921 3978758 1 3 56 F70 I5 3987922 3978758 V 3 70 F70 16 3987922 3978758 L 1 4 11 F70 16 l E 3987921 3978768 8477986 I 867208 1s1a c0nv6 rr6 4 svn P 1 DRIVEN IEEAEE SLEEVE AEM ADAPTER8 2 A ssa191s I9T 2969212 6478879 B 3987918 18T 3869912 C 3987920 20T 3869912 F D 3987922 22T 3869912 j r I I I I 1916 cokvrrrs 4 svn j Y V V 3 08 3 36 4 3 58 A V I 4 11 TIRE DRIVE DRIVE DRIVE DRIVE DRIVE SIZE A A GEAR GEAR VGEAR A jV A GEAR as1a1ss awsvss 3978758 1s1s1ss s1s1ss V an 70 15 qravqq A nnven B Drlv n Mig nrnven c nvE p V A 1 p Ad E A 5 1 y V V A E V4 1 P El g CODE GEAR N Q U ol T ASIIA r i CODE ADAPTER A 3987919 E I9 5 V j N tl1r V 84521 6 E 6 6478879 B ass1s1s 18 yy Brown V 1 946216 F j V 9 sssmzc zo 1 BnuE 346215 Q V B ass1s22 zz sam 346215 1 Yi 2 V 1974 CORVETTE 4 SI DE V V L I A I I TIREA I 3 08 RATIO rw U 3 38 RATIO I V Y sIs 11A1 1b 1 U W RATIO SIZE DRIVE GEAR DRIVE GEAR DRIVE GEAR E DRIVE GEAR DRIVE GEAR 3978758 3978768 3978758 V 3978758 V 3978758 61178 16 nEavE A nmsn B amen A Af maven c nyw n 1 Adam Adapter E Adapter 6 Adapter E Au5pu r 6 V GM 1 AR rs Ii1v1s1bN cBuznAL M rpBs c0n 0 Ar10N b 1 tv du fii4 4 3374 337 4 zz REV 6 79 3 I 3