61 PASS w 4 SPD exc Spec H Per 62 PASS w 4 SPD exc 4 11 4 56 axle 62 CORVETTE 4 SPD w 3 08 3 36 axle 2 54 to 1 lst gear 1 92 to 1 2nd gear 3817371 1 299 50 61 PASS 4 SPD w Spec H Per cast iron 3789339 1 299 50 61 62 Ser 10 3 SPD w 3 90 axle exc H D 4 WD 61 62 4 WD w 3 SPD 3799183 1 141 00 61 62 Ser 20 w 3 SPD exc D D H D 3799185 1 141 00 62 PASS w P G 327 exc H Per 3788887 1 299 50 62 PASS w 3 SPD 6 cyl exc TAXI POLICE 3 70 axle 3796621 1 135 00 62 PASS w 3 SPD 327 2 47 to 1 lst gear 1 53 to 1 2nd gear 3796631 1 141 00 63 PASS w 3 SPD 6 cyl exc O D 3820501 1 63 PASS wjP G 6 cyl exc TAXI SUPER SPORT 3813953 1 285 00 63 PASS w 3 SPD 283 exc O D 3820503 1 141 00 63 PASS w 3 SPD 327 3820509 1 141 00 63 PASS 4 SPD w 3 08 axle 3820271 1 299 50 63 PASS 4 SPD w 4 11 Pg Trac axle 3820269 1 299 50 63 PASS w P G 327 exc H Per 3823451 1 299 50 63 CORVETTE w 3 SPD 3819107 1 159 75 63 Ser 10 3 SPD w 3 90 axle exc H D 63 4 WD w 3 SPD 63 Ser 20 w 3 SPD exc D D H D 3830205 1 141 00 63 Ser 10 thru 30 wr4 SPD 3828249 1 192 00 63 Ser 10 20 w P G 230 3822604 1 285 00 63 Ser 20 D D w 3 SPD exc H D 3830209 1 141 00 NOTE 1 On 1948 53 TON models replace speedo drive gear w 3695417 On 1948 54 TON models replace speedo drive gear w 3692234 On 1948 53 TON models replace U joint w 591646 On 1954 TON models replace U joint trans rear bearing support assy and hex head bolt 24 x 1 and use 3845019 rear bearing support assy 3845092 U joint front yoke 3845023 rear bearing oil slinger and hex head bolt 24 x 1 NOTE 2 On 1949 Pass models with 3 70 axle it will be necessary to replace speedo drive gear and speedo driven gear fitting assy w 3692233 speedo drive gear unit On 1949 52 Pass models it will be necessary to replace speedo drive gear and speedo driven gear fitting assy w 3695417 speedo drive gear unit NOTE 3 When using on 1955 59 and 1960 Ser 20 30 exc D D models it will be neces sary to replace the rear bearing assy the U joint front flange assy including speedo drive gear and replace w rear bearing retainer assy 3775399 and transfer old U joint front flange and brake drum assy including speedo drive gear Also when using on 1955 62 1 TON models w 6 cyl engine it will be necessary to replace both outer shifting levers with levers from old transmission NOTE 4 When replacing transmission it will be necessary to install 3845093 lst and reverse lever 3728300 2nd and 3rd or transfer old ones Also transfer of trans control cross shaft bracket and attaching bolts will be necessary NOTE 5 When replacing transmission the speedo driven gear may have to be replaced with 3845071 for 1955 58 and 3756902 3756904 or 3756906 for 1959 Also both lst and reverse 2nd and 3rd shifter shaft and plate assy or the trans cover assy will have to be transferred from the old trans NOTE 6 When installing on 1956 models with 3 27 axle ratio the speedo driven gear and shaft assy 3726645 must be used in place of speedo driven gear 3708142 NOTE 7 When using 8618675 on lst design 1958 and prior models it will also be necessary to use 2330592 filler tube 2324603 indicator assy and 3752135 clamp Also on L 6 engines it may be necessary to drill 5 hole through flywheel housing NOTE 8 When using 8618685 on Ser 3E 1st design 1958 and prior models it will also be necessary to use 2330592 filler tube 2324603 indicator assy and 3752135 clamp On D D models lst design 1958 and prior models it will also be necessary to use 2334864 filler tube 2334854 indicator assy and 3752559 clamp Also on L6 engines it may be necessary to drill hole through flywheel housing Chevrolet Motor General Motors Corporation