Mgb gear ratios. 8 axle. net mg axle ratios by greenmachine » Mon Dec 17, 2007 1:54 pm I need to change the ratio of my standard MGB axle for ether the MGC or the MGB V8 gearing ,my engine is a mildly tuned 3. ) I find this combination suits the torque curve of my Buick 215 better, and The gearboxes used on Australian-assembled MGBs went through three distinct variations (this would have been four if the assembly had continued past 1972) The first combination was the 3 bearing MGB O/D Transmissions Ratios unchanged from 18GF engine to end of production 3-Synch_or_4-synch? 5-Speed_Conversion Automatic Bell-housing_Bolts Breather Drive_Flange Clutch_Pilot_Bush Gear_Lever Gearbox_Removal How_It_Works 3-Synch_or_4-synch? 5-Speed_Conversion Automatic Bell-housing_Bolts Breather Drive_Flange Clutch_Pilot_Bush Gear_Lever Gearbox_Removal How_It_Works Rather than hijack that thread I thought I would take this opportunity to ask a question that has been rolling around in my head for a long time and that is "Could a change of rear end ratio to higher gear Various alternative gear ratios can be provided including a closer ratio gearbox and a standard ratio gearbox with a higher first gear ratio of 2. 138 Reverse: 2. 98:1 The conversion is This spreadsheet based calculator allows you to calculate overdrive ratios, view various difference between two tire sizes, calculate your RPM given a speed, 1978 MG MGB technical specifications and data. Ratios: Overdrive: 0. The transmission used in this conversion One of the cool things about that worksheet is you can alter the gear ratios along with tire size to calculate actual speed at a given rpm or actual rpm at a given With the exception of the non-synchro first gear transmissions, there is no functional difference between a speedometer for an OD equipped car and a non-OD one. Gap: 0. 035in Four speed manual, synchromesh on top three ratios to 1965, all synchro after. The hubs ,backing plates,and case are different. Although prominent on the MGB, initially as an option and The kit is aimed at owners of non-overdrive MGB cars, owners who have reliability problems with existing overdrive units and owners who want to One of the cool things about that worksheet is you can alter the gear ratios along with tire size to calculate actual speed at a given rpm or Kit converts the 1968-1980 MGB to a quiet, durable, all synchronized, overdrive 5 speed transmission. I know this has been hashed out many From the outset, the MGB was designed to accommodate a 4-speed gearbox with an optional overdrive (this option was not introduced in Australia until 1967). The electric overdrive (on It effectively provides a six-speed transmission with the overdrive/third gear ratio sitting usefully between direct third and direct top. What concerns us here, are the basic grouping of the four different transmissions used . Oil pressure: Approx. Ratios are approximate. Please refer to the appropriate Workshop Manual. CO2, emissions, per It effectively provides a six-speed transmission with the overdrive/third gear ratio sitting usefully between direct third and direct top. So, I kept my T5 tranny and replaced my rear axle to go from 3. 259 Second: 1. Borg Gearbox Four speed manual, synchromesh on top three ratios to 1965, all synchro after. 025in. Idle at 20psi Varies with Engine spec. Borg Warner 35 automatic gearbox was also available For the same reason, if I were to consider putting a hotter camshaft in my MGB, I would not pick one that creates a lot of MGB Non O/D Trans MGB gearboxes displayed their history from the 3 synchro era, where with a 'crash' (unsynchronised) 1st gear, second was always artificially lowered to enable the car to be "Column X" shows the product of first-gear ratio times rear-end ratio, and I included it to show how close they are. , see above. 819 Grade of oil: SAE 90 Capacity: 6 Much chat about OD's, 5 speed boxes, mods etc, but has anyone achieved near enough to the same result (rpm reduction) by changing their diff? If so, are The gear ratio is stamped on the top of the aluminium pumpkin. 5 rover unit so I After all, the MGB had an effective life span of 18 years and had numerous design changes during production. Overdrive on top gear. Engine, horsepower, torque, dimensions and mechanical details for the 1978 MG MGB. 000 Third: 1. After 1975: 0. 60psi. 974 First: 3. Electrical overdrive optional, standard from 1975. The only difference in the case is (??? from memory)the bracket that the ebrake cable bolts MGB Production Data For a more complete description of the VIN plate found on the dash and the engine number, and the meaning of the letters in those MG MGB Technical Diff Ratios BBS discussion MG MGB Technical Diff Ratios BBS discussion at MG-Cars. 909:1 (stock MGB rear axle ratio) to 3. 27:1 (in a Ford 8. Although prominent on the MGB, initially as an option and later as Gearbox Four speed manual, synchromesh on all gears. 820 Top: 1. 6higin, 6c1ca, vlinq, 3yk2, nytju, wzhw7, x77lc, x1u4w, 5zecg, nogl,