4.11:1 Ratio, 37 Ring Tooth Count, 9 Pinion Tooth Count Ships Free Ratio . That said, I noticed Jegs sells a 4.11 ring and pinion. This likely equates to a 43 tooth ring gear and an 11 tooth pinion (43/11=3.9091). do the math, 41/11 = 3.73. drive gear and pinion, 47-11 tooth 4.27:1 ratio, model 44 axle, 10 bolts. "The reason for the very slight differences in axle . Condition: New. Summit Racing Ring and Pinion Sets. model name / number: GM12/373C. Study now. For example, if the pinion gear has 41 teeth, and the ring gear has 11 teeth, the ratio would be calculated as 41/11, which is equal to 3.73 = 3.73:1. drive gear and pinion, 41-10 tooth, 4.56 to 1 ratio, 10 spline pinion, model 27 axle, #17263 ring gear, 7 3/4" o.d. Motive Gear Ford 9 Inch Performance Ring and Pinion, 1957 - Up Style. Alloy steel, heat-treated & ground, USA made. You should be able to find your gear ratio listed on the axle tag, however, if that has gone missing, you can simply count the number of teeth on each gear and divide the number of ring gear teeth by the number of pinion gear teeth. Not sure about the # of splines, but I think it is 30. I probably have a complete 5.12 rear third around here for your sport. Save $15 Off $299, $25 Off $499, $50 Off $799, $100 Off $1,599 Orders I counted the ring gear's teeth twice. Figure 12The tooth depthwise perspective. Pinion Shaft Diameter 1.875 (Inch) Pinion Spline Count 35. 10 tooth would be 4.10 ratio and 11 would be 3.73 ratio. The ring gear has 40 teeth and the pinion gear has 11 teeth. Yes,I changed the ring gear & pinion only on my 39.Had a new one in the box for years when I began using the car for long distance travel again I made the change.The 1939 parts fit 37-39 only and the 3.73 ratio was standard in the lower priced Master series.If you change your 41 most people I know used the complete center section and torque tube (enclosed drive shaft )from the P.G. Tooth Combination(i.e. Matched Set Number- Spicer ring gears and pinions are manufactured as matched sets. x 4 1/4" i.d., x 3/4" thick, #18394 pinion gear, 8 1/4" o.a.l., 8 bolts, salisbury brand. Ratio: 9. Move the ring gear away from the pinion (increase backlash) while maintaining minimum backlash. Part # 919194. For example, if the pinion gear has 41 teeth, and the ring gear has 11 teeth, the ratio would be calculated as 41/11, which is equal to 3.73 = 3.73:1. The gear design, tooling, steel selection, heat treat recipes, and quality requirements are specified by Richmond to withstand the abuse of high performance and daily driving. For use with #7792 35-tooth heavy duty differential ring gear. drive gear and pinion, 41-10 tooth, 4.56 to 1 ratio, 10 spline pinion, model 27 axle, #17263 ring gear, 7 3/4" o.d. I suspect maybe I counted the wrong gear as the pinion. My 4.10 is 41 ring teeth and 10 pinion teeth, and the Jegs 4.11 is 37 ring teeth and 9 pinion teeth. A division of Midwest Truck and Auto Parts, Motive Gear offers the highest quality drivetrain components on the market today. post id: 7394540800. All recommendations greatly appreciated. Choose The Gear Ratio That Is Best For Your Vehicle. Gear Ratio: 4.10 Tooth Count: 41/10 Pinion Splines: 29 Ring Gear Bolts: 12 (not included) Manufacturer: Spicer Warranty: 1 Year "All Spicer ring and pinion gears are designed and tested to meet original equipment specifications. fc-170 . 145 Teeth. Yours has rear ABS right (electrical connector on the rear third)? Be sure to check out all of our products from Richmond Gear including Richmond Gear GM 8.5" 10 Bolt Ring and Pinion. This will only fit the 1965-72 era 8.2 axle. If you answered - the smaller tooth, you are correct. Next, determine the gear ratio on your vehicle using one of the following methods: Count The Teeth: Divide the number of teeth on the ring gear (big gear) by the number of teeth on the pinion gear (small gear). 4.10 is 41-10 tooth count. That gear's hard to mistake . The rear end that I pulled from my 50 Chevy 3-spd has a ring gear .. 15/02/2003 the difference between 4.10 and 4.11 is that 4.10s have 41 ring gear teeth and 10 pinion teeth. 19 spline axle. At that point, I'm concerned US Gear's 4.11 setup uses 9 pinion teeth and 37 ring teeth (vs. Heavy duty steel 11-tooth pinion gear for X-Maxx rear differential. Pinion Gear Tooth Quantity (12) 10 (102) 11 (124) 12 (13) 13 (42) 14 (19) 15 (6) 16 (2) 5 (1) 6 (17) 7 (14) 8 (99) 9 (73) Ring Gear Diameter (In.) Some people are like slinkys. In a rear axle, for example, a common ratio is 41 teeth on the ring gear (driven gear) and 11 teeth on the pinion gear (drive gear). and bolted . Mock it up and try it out. The number of teeth on the ring gear divided by the number of teeth on the pinion (eg: 41/11 = 3. . The HEEL of the gear tooth is the portion of the . 0 votes. Always verify that you have the correct gear ratio that you have purchased. Figure 13With the pinion assembled too close to the ring gear, the contact will be pushed deeper into the ring gear teeth and higher on the pinion teeth. Selling my old rear end gear set from my 1972 Chevy El Camino This was the original gear set that came stock in the vehicle. High performance Yukon Ring & Pinion gear sets for the Ford Sterling 10.5" axle with a 31 spline pinion use the latest design and manufacturing technologies to provide a quiet running gear that is strong and easy to set up. How to calculate differential gear ratio: It's simple! Really good for nothing, but they still bring a smile to your face when you push them down a flight . Replaces VPC4200 & 825149M1. Pit Stop USA offers Richmond Ring & Pinion Set - 3.73 Ratio, 41-11 Teeth, GM 10 Bolt "New Style" (70-94) 49-0041-1 at low everyday prices. dj-3a: nla The calculation uses the number of teeth in the ring gear and divides it by the number of teeth in the pinion gear to provide you with a "[result] to 1" ratio. Compare. There are two things that must change in order for the gear ratio to change. Tooth Combination(i.e. Precision Gear Ring and Pinion set GM 12 bolt 4 series, 3.73:1 (Pinion 11 teeth, Ring gear 41 teeth) lightly used and in like new condition. 4.11s have 37 ring gear teeth and 9 pinion teeth. Motive, Yukon, etc. Click on Calculate to see the resulting ratio of ring gear to pinion in both actual and rounded values. Motive Gear D35-373 Ring and Pinion 41-11 Teeth 3.73 Ratio. Both ring gear and pinion are marked with a corresponding number (i.e. You should be able to find your gear ratio listed on the axle tag, however, if that has gone missing, you can simply count the number of teeth on each gear and divide the number of ring gear teeth by the number of pinion gear teeth. Feb 23, 2004. All Yukon ring & pinion sets come standard with a one-year warranty and, as you'll see below, utmost care and quality is put into every differential component manufactured.

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