Jims Catalogue

CONVERSIONS TRANSMISSIONS

6-SPEED OVERDRIVE FOR A 4-SPEED FRAME & 5-SPEED FOR A 4-SPEED FRAME

JIMS ® 4/5 and 4/6 conversion transmissions are designed to fit most 1970 – early 1984 Harley-Davidson Shovelhead electric start models only. However, we do not consider our 4/5 and 4/6 transmissions to be a "drop-in" product. We offer them as custom transmissions, requiring installation by an experienced Harley mechanic.

These transmissions are shipped fully loaded with the finest components available by JIMS ® , such as: forged gears with lead-in ramping and back-cut engagement dogs, close ratio 1st gear, precision machined and heat-treated counter and main shafts, chrome billet trap doors, chrome billet top and side covers, and JIMS ® performance gaskets. For more details see No. 8028C6-IS instructions. Additional Parts Required: • Clutch pushrods: No.37090-79 (left), No.37088-79 (center) and No.37089-79 (right) • Clutch release bearing kit: JIMS ® No.2226 or H-D ® No.37312-75 (1) + No.37313-80 (2), + No.11096 (1) • 1986 and later clutch cable & pivot pin • 22T or larger offset sprocket for early 5-speed (1980 – 83) or special pulley • Main drive gear nut (No.35211-36) • Forward or aftermarket mid-controls • Offset rear sprocket or special pulley • Chain or belt electric start primary drive Optional Parts: (See Build Note) • If you wish to use a belt final drive, a special front pulley is required. • Electronic speedometer sensor Possible fitment issues: • Some installations may require modification or fabrica- tion of exhaust, oil tank or electric starter mounting brackets. • 22-tooth chain sprockets require modification of the transmission casting to clear the chain. • Some inner primary covers require modification to clear the main drive nut. • Some electric starter installations require modification of the transmission case for clearance. • Inner primary seal (No.12018) • Inner primary bearing (No.9037) • Shift lever: JIMS ® No.33715-85AC or H-D ® No.33715-85 • Shovelhead style "dry" clutch hub as used on 4- speed (tapered shaft with woodruff key) • 1986 or later clutch cable

Gear . . . .Ratio 1 . . . . . .2.94 2 . . . . . .2.21 3 . . . . . .1.57 4 . . . . . .1.23 5 . . . . . .1.00 6 . . . . . .0.86:1 ( Overdrive)

6-SPEED FOR A 4-SPEED FRAME PRECISION-CUT 4/6 SPEED

PART NO.

APPLICATION/ YEAR CASE

8028C6 8030C6

FX & FL 1970 early ‘84 Plain Aluminum FX & FL 1970 early ‘84 Polished Aluminum

BUILDERS NOTE: If installed on any other motorcycle other than one that came stock with a dry clutch, it will be the responsibility of the builder to install the proper parts needed to make this transmission installation work and function safely. For exam- ple: Primaries and other related parts. There is not a stan- dard list of parts and or modifications required to install these transmissions.

Gear . . . .Ratio 1 . . . . . .2.94 2 . . . . . .2.21 3 . . . . . .1.57 4 . . . . . .1.23 5 . . . . . .1:1

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5-SPEED FOR A 4-SPEED FRAME PRECISION-CUT 4/5 SPEED PART NO. APPLICATION/ YEAR CASE 8028 FX & FL 1970 early ‘84 Plain Aluminum 8030 FX & FL 1970 early ‘84 Polished Aluminum

For more details see No. 8028-IS instructions.

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