My '64's measure 54.25". I placed the order with Speedway motors in late July for my rear end housing and Currie axles. The new P/O 9.3-inch immediately found its way into hot rods and race cars. 70 2wd 6 lug rear end 12 bolt Possible gear ratio's Here you can see the three white paint splotches identifying the pinion size and the gears. Roadkill Customs has evolved from local hot rod shop to online how-to magazine for budget-minded do-it-yourself hot rod builders and enthusiasts. Re: Rear end interchangability 1965 to 1967 IMPAL. Rim Width Measure from the inside of the outer lip at the bead seating point to the inner lip. That being said, if you have at least 2" of clearance (and preferably more) between your stock tire/wheel combo and the frame or exhaust pipe, whichever is closest to the tire, then a 56" rear end width could possibly fit. . '70's Ford Grenada Engine Numbers. I have a source for the axleshafts and the difference in the shafts shows this to be true, BUT doesn't show the diff center . var t=new Date(); 0000001644 00000 n Post: rear end width chart (Topic#173541) greg pharr Contributor Posts: 897 Loc: North Mississippi Reg: 07-09-03. Beginning with a new line of U.S.-made gearsets in desirable ratios, Fabcraft rekindled the flickering flame of the 9.3-inch. Six rib cases will be found on '57 and '58 rearends, '59-64s have seven ribs. "SPECIAL" CARS - 1938 Pontiac Special six. 1957 Pontiac Chieftain 2/4-Door Sedan full range specs What is the width of a 1959 pontiac rear end? GMC V-6 used a 3.21 Dana 44 used a standard chevy 1310 yoke, Dana 60 used the heavy duty yoke which takes the larger 1350 yoke. Rear End Widths - Auto Hobby Page 1958-1970 Full size rear Differential Identification - 348-409.com . So why did the Ford 9-inch become the premier differential of modern day hot rodding? Additionally, it can be a relatively affordable way to enjoy a day at the track. The 55-57 Chevy car rear-end is almost a bolt in, the perches need to be relocated to the top of the housing though. 1967 PONTIAC GTO Differential & Rear-End Components The most common GM unit for the 1982 to 1992 Camaro is the Saginaw style 10 bolt Chevy differential. '62 Buick Skylark, '67 Chevrolet Six All correct GM codes and part numbers. 0000002038 00000 n Rear-end questions. '74 Valiant, '57 Ford Approximate rear end widths measured from backing Advance Design Trucks seem to be using rear ends with widths ranging from 58"- 62". Rear Wheel: Production Years for Series : 1964 - 1967 : Price : $2,437-$3,095: Weight : 3015 lbs | 1367.581 kg: Performance. Wilwood Engineering, Inc. - 4700 Calle Bolero - Camarillo, CA 93012 - (805) 388-1188. 1/4 Mile : 13.1 seconds. '72 Charger Pontiac Flathead Owners - Antique Automobile Club of America The power is transmitted to the road by the rear . Factory Width. GM 10-bolt rear ends have four basic ratio choices: 2.73, 3.08, 3.42, and 3.73 . 6>"FlJz^l,*4&V0afw .a@z"PXdj}o`2/ OQs=`&qf aDK|/U32.)0i%q~P"BaLw.Y@`uwy#Do~vt*o~@$y-KZe]X3q'WWb2y)0`61"4@Q*`6k RPf\`H#@ ^M8-|&YxO-t The P/O rearend and parts were getting harder to find and there were more Ford 9-inchers being made every day. If you noticed the axles are missing you would be correct. We'll work to keep you motivated and informed and with industry news, product information and reviews, event coverage, and well-curated articles and stories intended to inspire and educate. Someone may correct me, but as I recall 1959 was the first year for the "Wide Track" Pontiac. GM 8.2" and 8.2" BOP Axle Parts, Gears, and Upgrades - Drivetrain Shop . For 1966-1970 Plymouth and Dodge B-bodies there were three basic rear end assemblies that were available: the 8, the 8, and the 9 Dana 60. . Once I had the wooden rear end made I attached the wheels to the small wood axle flanges with wood screws and large washers to stop the screws from pulling through the lug nut holes. I used 5" long lag bolts to hold the end pieces of wood on which permitted me to add up to 1.5" of shims to each end. Suspension Width (Flange to Flange), Ford Mustang II/Pinto & '72 Dart 0 '55 -57 Chevrolet, 68-69 Fair lane 6 or 8 0000000716 00000 n You are using an out of date browser. Its pretty easy to find a good one if you are in an area with a few junkyards. As a result, many tribute cars and gasser-inspired builds had to stray from correctness. Casting # Year: Body: Size: Notes: 2070051: 1960 - 71: A . Both of these are semi-floating axles. Inland Empire GTO Club - An All Pontiac Club http://www.jalopyjournal.com/forum/showthread.php?t=128884, http://www.jalopyjournal.com/forum/showthread.php?t=38805, Upstate New York, watching my New Yorker Rust, http://www.jalopyjournal.com/forum/showthread.php?t=128884&page=2, http://www.jalopyjournal.com/forum/showthread.php?p=1450810#post1450810, (You must log in or sign up to reply here. Mopar Rear Axle. However, the 9.3-inch differential was saved from obsolescence by a Texas-based company called Fabcraft Metalworks and its owner, Brad Duerst. . xref The 8.75 (8 3/4) rear end LOADS FROM THE FRONT and IS THE ONLY REAR END THAT DOESN'T HAVE A REAR COVER. Third Generation (1982 - 1992) Technical Data 0000002004 00000 n Roadkill Customs has evolved from local hot rod shop to online how-to magazine for budget-minded do-it-yourself hot rod builders and enthusiasts. B. A period gasser can be built by scrounging swap meets, salvage yards, and the Internet for many of the components necessary to complete a genuine example of one of the dominant race cars from the 1950s, '60s and '70s. For a variety of reasons, not the least of which is the current Gasser craze, Pontiac and Olds rearends are enjoying renewed popularity. The non C-clip 8.5" 10 bolt, type "C" rearend was used in some 1969-'72 Pontiac GP and 1970-'72 Monte Carlo. Why not a Ford? For die-hard purists, it soon became a difficult proposition to build a worthy P/O 9.3-inch as aftermarket support subsided and the supply of virgin factory parts withered. Ford. A turbocharger was added to the 301 to give the 1980 Trans Am an injection of performance. wagon pontiac plant 1975 2.73 ua va b sedan 1975 2.73 ya za b wagon 1975 2.73 pa pu f 1975 2.73 wl xl g . M&M CUSTOM. 59" 68-83 Corvette , 67-70 Mustang/Cougar/Fairlane, 60" 55-64 Chevy I used 5 long lag bolts to hold the end pieces of wood on which permitted me to add up to 1.5 of shims to each end. The Rochester Quadrajet carburetor was featured on the top spec GTO. Look at the RPO codes. * Ring #s GM 40 13 == 67 - 8 - A. We provide how-to and technical articles, vehicle and build features and examples, plus calculators and lookups that will help you get your ride from dream to driver. Popular Tools & Look-Ups. For some time, only a small handful of ratios were available in new gears. '71 Comet (Rear Wheel Drive) +20 offset. Posts: 8. Jeremy. The later rear axle requires a wheel with between 5" and 5-1/4" of backspacing, while the earlier axles will only need a wheel with 4-1/2" to 4-3/4" backspacing. The following list %twE_( H@v7H f)p* 0KO|O n>+ User Info. They're tough, right? [ July 26, 2022 ] Reversing Gears ~ Rescuing One's Own Derelict 1967 Pontiac GTO Builds and Examples [ July 24, 2022 ] . Underneath the back end of an overwhelming majority of gassers was a 1957-'64 Pontiac/Oldsmobile 9.3-inch differential. The 1967 Firebird has the particularity to have a rear axle held by arms while in 1968 rear axle was hold only by the blades/spring of suspensions. You're building a gasser. Under the hood, Pontiac installed a 2.5 . 0000015097 00000 n Impala Rearend width ? | LayItLow.com Lowrider Forums Your differential is the set of gears that allows your vehicles driven wheels to revolve at different speeds by splitting your engine torque in two directions, An Online Magazine for DIY Hot Rod Builders. Needle BUILD IT YOURSELF - PARTS LISTS BUSHINGS TO ADAPT TUBE SIZE . Your Nova should be the same as 67-69. JavaScript is disabled. stock from flange to flange it is 60 ". pontiac rear end decoder year ratio open posi model notes: . Rear-end questions - WebCars )EgZ(WLlT!c!r~;+{( BRnpX{n>S;;5q N`+UHWF*FA6*BKm)JBw All Pontiac Firebird 2nd-gen. Trans Am Coupe versions offered for the year 1977 with complete specs, performance and technical data in the catalogue of cars . Registered: 16 years ago. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass. '64 1/2-'65 Mustang '72 Cougar, '74 Pontiac, '49 Plymouth, '61 Chevrolet Impala A: By casting numbers and date codes, along with other external characteristics, all of which are shown in the manual by Zach Davidson and Brad Duerst. also note on the A4's (auto's) shifter console if the gear selector for 1 is missing. This method will work but the wheels are always trying to roll away and tip over making it very hard to check for clearance and be sure that your measurements are correct . They were tough with 9.3-inch ring gears, big pinion shafts, and large-diameter bearings and tough axles. Building a gasser is a satisfying way to blast down the track, turn some heads, and salute the good old days of racing. It's not to the same level as a concours-correct restoration; no judge will deduct points for an incorrect paint code. Yes the axles were special in that I wanted to use a 28 spline center section already had rather than buy a new 3rd member to suit the 31 spline axles that Speedway stocked. Compared side-by-side with the Chrysler, it boasted stronger gears and larger bearings. 5D med-duty 4-pinion. trailer For a better experience, please enable JavaScript in your browser before proceeding. 0000012085 00000 n Axle Images: Axle Details. This information will change as further information and corrections become available. rear end width chart - Chevy Message Forum - Restoration and Repair Help '67 Mustang It has been my experience that the 66 up axle is longer. Cars from all the traditional drag racing classes are being built and/or restored, but among the most popular of these period-correct builds are the cars riding high on solid front axles and sporting fenderwell headers: gassers. 1957-58 are 29-spline and 1959-1964 are 31 spline. 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70. "" "" ". With a maximum top speed of 112 mph (180 km/h), a curb weight of 2672 lbs (1212 kgs), the Fiero GT has a naturally-aspirated V 6 cylinder engine, Petrol motor. The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Task Force width ranges at this time. Pontiacs had 1.75-inch-wide drums in 1957-58 while Olds used 2-inch from 1959-on, both used 2-inch brakes. Year. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. SiteStats_3379(); Originally posted by SUNNYD @Mar 22 2007, 10:23 PM~7534589. I've read enough times that '64/'65 are 54.25" and '66's are an inch wider that I believe it. The End of an Era. Quick question, I'm looking at a '50 Pontiac and was wondering if it had a torque-tube or a driveshaft. Currie Centurion Housing - Classic notchback looks in a new, high-strength, American-made housing, that features 3-inch diameter axle tubes, and CNC machined face flange, for a flat leak-free . Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. 1957-1964 Pontiac and Oldsmobile Rearends - Revival - MotorTrend Learn more. Rey Payumo of Kailua, Hawaii found this 1963 Chevrolet Impala packed with junk in a garage in Hayward, California. 100 x 4.12. '66-67 Chevrolet Big Car, '72 Charger Fabcraft also offered complete components for the differential, including all necessary bearings, seals, shims, limited-slip clutches, solid spacers, and crush sleeves, as well as beautifully refurbished OE parts. Newest [ January 23, 2023 ] Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory Roadkill Powersports to change without notice. 1965 Pontiac Tempest LeMans Specifications - Conceptcarz.com My 69 gto convert., purchased within the last year has a painful 2.56 rear gear. Dec 20, 2007. Other changes were made to the limited-slip carrier, but strength was not adversely affected. I believe the width, outside axle flange to outside axle flange, is 64 inches. S10 Rear ends---Info by Ben | T-Bucket Forums The 8.5-inch 10-bolt rearends have ten 3/4-inch hex head bolts with 7/16-20-inch left-hand thread bolts that hold the ring gear to the carrier. 18 0 obj<> endobj I did a quick google search for 65 impala rear end, and 65-66 impala rear end came up a lot. 20 0 obj<>stream We carry everything from the 7.25" IFS front end parts, to the large 11.5" rear end parts for 1-ton trucks.We make it easy to verify your exact rear end by providing specs and year, make, and model applications for . For the do-it-yourselfer, Fabcraft offers a full-color manual with excellent tech info on the differential. I'm running the wider blazer rear end . (Dart/Duster) with V8&3/4 axle, Table taken from "How to Build In this 489 case it is 3:91 gears and a 1 7/8 pinion. The '70 to '81 Camaro rear end is 61 inches. GU6 - 3.42's Standard manual trans gear ratio. The1971-'72 Buick GS/Skylark and Olds Cutlass A-body 8.5 10 bolt did not have C-clip axles. Several features are common to most gassers. Suspension Measurements - Quick Performance Q: Why do Pontiac/Olds 9.3 parts cost more than those for a Ford 9-inch? The 1967 GTO came in 3 speed Automatic and a 4 Speed manual. By 1965 GM replaced the 9.3 with a Spicer design using an 8.875-diameter ring gear that mounted the internals in the axle housing rather than a separate carrier. The final drive ratio is identified with 2 or 3 letters codes. 5" for small cars 5" - 6" for intermediate Rusty but Rare 1976 Chevy K10 Sport Truck Revival! For many years prior, Olds and Pontiac differentials had been a dominant rear axle in drag racing and other motorsports. Rear axle flange to flange is supposedly wider than the 68-72 AND the 78-88 GM A and G body cars. Rear axle widths. This 1955 Chevrolet 3100 Step Side Pickup Truck was built by the Hot Rod Factory, Minnesotas premier hot rod shop and muscle car restoration facility. Pontiac Rear End Gear Codes - Ron's Pontiac Page Will only work with bolt in style axles. 1982-1997. $5 Off Your $100 Mobile App Purchase . To say I was disappointed by the service provided by this company would be an understatement. '68 AMX While not as strong as a race-dedicated spool, the 31-spline Trophy Track carries a potent arsenal, including six 9310 alloy gears and twin cross-shafts, all of which are dimensionally larger and stronger than anything offered previously. ?|-Zce14^nF%67( }fSRaQfqX?|{8{>? VX5EX=b :"-'k>.VbyV^-nWxv-WgUtpo>sMhlI4ZV<4+s>|2k>\x{7M^^x. 0000001291 00000 n Bigger engines introduced in both Oldsmobiles and Pontiacs for 1959 prompted the second generation of these rearends with 31-spline axles, which were reportedly 22 percent stronger than the previously used 29-spline shafts. PDF Pontiac Rear End Decoder - thepartsplaceinc.com Pontiac Fiero GT Technical Specs, Fuel Consumption, Dimensions Measuring for the correct rear end width - Rodplans if you dont have a versailles just a regular 9 inch rear end,, that is also 60 ". Stop listening to your street rodder buddy and back away from the 9-inch. var I=new Image(1,1); I.src=u; Displays PONTIAC bolt patterns, wheel sizes and dimensions by model or view all matching vehicles that will swap or interchange with PONTIAC wheels. . Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars, STOCK CENTER TO CENTER SPRING PERCH DISTANCE, Original VehiclesRear Suspension Width (Flange to Flange), Donor Vehicles Front and RearSuspension Width (Flange to Flange), Items Dont Be That Guy, Reversing Gears ~ Rescuing Ones Own Derelict 1967 Pontiac GTO, How To Paint a Lace Roof on the Cheap Using Grandmas Curtains, Exploring an Antique Junkyard in the Hills of West Virginia, Engine, Transmission, Chassis Swap Donor Vehicle Look-Up, Early Ford Beam Axle Identification and Dimensions, How To Box-In a Differential / Solid Axle Rear-End Housing, How To Install aLimited Slip/Posi Unit in a GM 10 Bolt 8.5 Rear-end, How To Install Ring and Pinion Gears in a Ford 8.8 Rear-End, How To Rebuild a GM 10 Bolt Chevy 8.5 Rear End, How To Select Proper Rear-End / Differential Gear Ratio, Popular Automatic Transmission Dimensions, Popular Automatic Transmission Identification Chart, Engine / Transmission / Chassis Donor Search, Project Cars and Part Donor Cars For Sale. pontiac rear end width chart - akzenterprises.com 1958-1970 Full size Chevy rear differential identification chart. ; Home 2; Home 3; Home / / pontiac rear end width chart. It is a little better than the Camaro 8.2 10 bolt. The T/A 6.6 was available for most of the model year, but once the supply of stockpiled 400s was exhausted, it signaled the end of the big Pontiac V-8. Valves. There are three different third-member castings, but all will install into any '57-'64 Pontiac/Olds housing. Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. Rear Axle Identification : Drivin' It Home Combination / conversion universal joint size, dimensions The housing came in a couple of weeks but without the axles. It has an M-21 four speed and I am ready to upgrade the rear diff. In searching the web I found the following links that have a massive of information on rear end widths and wanted to share. Prices and availability are subject Identified by casting number & number of cover bolts. 1977 Pontiac Firebird 2gen Trans Am Coupe full range specs '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger Building an example that truly reflects what was around back then takes a certain passion for correctness. may be different than pictured. July 30, 2004 11:23PM. These smaller volumes and domestic content result in slightly higher prices. The 1' wider that was stated in paul/chuck 's book may have been miss spoke. some Chevy's Dana 44 or Dana 60 with leaf springs 6 lug, Gear ratio's Jeff Smith: When Chevrolet built the first Camaros in 1967, they were already in production of both 10- and 12-bolt rear-end housings. Like most american muscle cars of the Day the Pontiac GTO was a front engined rear wheel driven car. 3.08. Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. Gallery: '66-'70 B-Body 8.75 Rear Differential Identifiers & Markings I cut two axle flanges from a couple of short pieces of wood and then used 3/8 lag bolts to attach them to the longer center portion of the rear axle. GU5 - 3.23's Optional auto trans gear ratio. Below matches. Picture is from parts book. with 10 bolt axle, "A" body Add Width to And even though new internals were available from Fabcraft, the carriers were simply becoming too difficult to find. & Conditions, Ford Mustang II/Pinto & Mercury Capri/Bobcat, Monte Carlo, Regal, etc. This assembly used an 8.2-inch ring gear diameter and 28-spline axles for Camaros, Chevelles, Impalas and even the early Chevy II's. While the Ford 9-inch is the perceived benchmark of popular rearends today, in stock form the edge would go to the Pontiac/Olds. I have in the past struggled to measure the car for the correct rear end width to get the wheels and tires to fit correctly for both appearance and to avoid contact with the fenders, frame and suspension. A: Ford 9-inch is like the small-block Chevy of rearends. 1958-1970 Chevy Rear Differential code Identification : Using the charts below, you will be able to learn alot about the rear differential in your classic full size Chevy. Compared to the Ford, the P/O parts were more expensive. If in doubt, consult one of our differential experts at (800)510-0950! The 78-88 mid size GM cars use a 7.5" 10 bolt, which is about 58/5" wide. Ironically the heavy-duty nature of the 9.3 worked against it and played a part in its demise. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. pontiac rear end width chart . 41/14. 62" 64-77 Chevelle, 73-76 Torino, 89 Trans Am. Six-cylinder truck engine block and head casting numbers. Willwood Engineering. 455 ho only(c-type axle) 12 bolt 1970 3.36 cok col fb 1970 3.55 cow cox fb 1970 3.55 wv xv gto 455 ho only(c-type axle) 12 . |;|tB70t:`!t;?Yp?o^16Y*Ra(k ;6te64^bv n+;:G57@hbM_5 N These dimensions do not include brake drums and are measured from backing plate to backing plate. The Borg-Warner HD rear end was dropped and replaced with the old 7.625 (7 5/8) inch rear end. Find your GMC/Chevy vehicle in the chart below and click on the illustration for a larger view. While it still may take an investment in time to locate a good third-member core and housing for your gasser project, these components are still relatively plentiful and quite affordable. 0000000016 00000 n But the components should at least be grounded in the era. Differential Identification | West Coast Differentials i know in 1956 the pontiac dual range hydra-matic got a different driveshaft yoke. 47 - 54 rear end width - The Stovebolt Forums Click the above picture to view full size. What is the width of a 1959 pontiac rear end? During the production run a third-generation gear case was introduced, oddly enough with slightly smaller pinion bearings, which was probably a cost-cutting move. Because the Borg-Warner axles were no longer being used for the G92 option, optional axle ratios changed slightly: LB9 305 TPI 5 speed went from 3.45 (1989) to 3.42 (1990) and the B2L 350 TPI went from 3.27 (1989) to 3.23 (1990). Axle Shaft, Rear, 1541H Alloy, 28 Spline, 29.875 in. Diagram. The other drawback is that you can only check for clearance at the height the jack stands are set to. What I did is shown below in the photos. This reduced weight and eliminated the stock suspension, producing a spacious engine bay that eagerly accepted the chosen powerplant. Vehicle. 1967 Pontiac GTO - Wheel & Tire Sizes, PCD, Offset and Rims specs | Wheel-Size.com. jack39rdstr # 169783 04/02/10 02:03 PM. Its narrow front end with a plastic, wrapped-around bumper featured fog lights as an option. well i have 1 from f 150 82 b/plate 2 b/plate it is 58". Thanks to the efforts of the Fabcraft Metalworks crew all the parts necessary to rebuild one are available along with a selection of improved components and special tools to make working on them easier. What Is Rear End Gear Ratio and How Is It Calculated? - Gear The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. With its larger bearings, larger gears, and larger axles, the P/O 9.3 would fall somewhere between the Ford 9-inch and the Dana 60 in terms of strength. Richmond Gear calls the 57-64 Olds/Pontiac rear a GM 9.3" Axle (the ring gear is 9.3 inches). Dick this in no way reflects upon your statement but you make an excelent point when you stated " I read enough times that". Technical Information and Specifications for 1939 and 1940 - Stovebolt Very hard to find set, being as this is version is not being reproduced. Rear-End Widths of Classic American Cars - Roadkill Customs June 5, 2022 Posted by: Category: Uncategorized 57" 71-74 V-8 The early Nova's 62-67 would be about 2" shorter. Ford Mustang Complete 9" Rear End Packages, GM G-body 78-87 Complete 9" Rear End Package, GM Chevy S10 82-04 Complete 9" Rear End Package, GM Tri 5 55-57 Chevy Complete 9" Rear End Package, GM X-Body Nova Complete Rear End Packages, Axle Bearings, Retainer Plates, & Wheel Studs, Bearings, Differential Parts, Seals, & Hardware, Master Cylinders, Caliper Kits, and Parts. In their day Pontiac and Olds rearends had a well-deserved reputation for toughness and reliability, that's why they were found under so many hot rods on the dragstrip and the street. 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Dont Be That Guy, Reversing Gears ~ Rescuing Ones Own Derelict 1967 Pontiac GTO, How To Paint a Lace Roof on the Cheap Using Grandmas Curtains, Exploring an Antique Junkyard in the Hills of West Virginia, Engine, Transmission, Chassis Swap Donor Vehicle Look-Up, Early Ford Beam Axle Identification and Dimensions, How to Apply Rust Encapsulator Plus to a Rusty Rear End, How To Box-In a Differential / Solid Axle Rear-End Housing, How To Select Proper Rear-End / Differential Gear Ratio, Wheelbase Measurements for Popular Classic Cars, 1955 Chevrolet 3100 Step Side Pickup Truck Build, How To Cut Your Long Bed to a Short Bed in a Weekend, Engine / Transmission / Chassis Donor Search, Project Cars and Part Donor Cars For Sale. but the body with is 1" wider on 66-67. Privacy Policy. 4.24 out of 5 stars. Popular Automatic Transmission Identification Chart; Rear-End Widths of Classic American Cars; Follow Us on Flipboard . '70 Duster , '71-77 Maverick Rear end gear ratio???? - LS1LT1 Forum