pontiac rear end width chart

It has been my experience that the 66 up axle is longer. & Conditions, Ford Mustang II/Pinto & Mercury Capri/Bobcat, Monte Carlo, Regal, etc. How to cut your Ford F100 long bed to short bed in a weekend DIY project ~ Two-Part video details cutting frame and bed. The following tags will show a 4L80E transmission as an example. Picture is from parts book. I would like most people place the wheels and tires under the car and use a tape measure to determine the distance from wheel flange to wheel flange. Jeremy. They're tough, right? Maverick 5 Lug 8", 49-51 Ford, 57-59 Ford 9", 58" 78-88 Mid Pontiacs had 1.75-inch-wide drums in 1957-58 while Olds used 2-inch from 1959-on, both used 2-inch brakes. Pontiac/Olds 9.3 parts are manufactured in the United States and are made in smaller custom production runs using high-quality alloys and the best materials available. Several features are common to most gassers. So what we are left with is this: A fully capable, period-correct, brute of a differential with complete aftermarket support. Approximate rear end widths measured from backing plate to backing plate. Buick/Olds/Pontiac axles are typically retained with bearings. getting back to the differential, why bill didn't cover 1956 i don't know, might have just been a typo or overlooked. Trans Am. Check our the Chevy rear end gear ratio chart above to help you identify the correct gear to use. I'm not sure of the jack39rdstr # 169783 04/02/10 02:03 PM. I came up with a cheap simple method to confirm the results of the measurement taken with the loose wheels. Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. 3.08. Six rib cases will be found on '57 and '58 rearends, '59-64s have seven ribs. '72 Charger A little history: In 1957, three important axles were introduced: Ford's 9-inch, Chrysler's 8.75-inch, and GM's 9.3-inch Hotchkiss-style axle for Pontiac and Oldsmobile. 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. A: Extremely strong! I've read enough times that '64/'65 are 54.25" and '66's are an inch wider that I believe it. There have been non C-clip rearends found in Chevelle wagons, and some El Caminos through at least 1974. The non C-clip 8.5" 10 bolt, type "C" rearend was used in some 1969-'72 Pontiac GP and 1970-'72 Monte Carlo. Product By Category; Products By SKU/ID; . Calculating the torque multiplication that your axle gears provide is quite easy. the wider housing is not 1" closer to 3/4 . 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 . some sources state that the 67 and latter are wider. The Borg-Warner HD rear end was dropped and replaced with the old 7.625 (7 5/8) inch rear end. @`AWG^8J>4j|^Vk@oXq7@@/9ep This ratio is 3.08, perfect for cruisin. 5" for small cars 5" - 6" for intermediate '65 Cadillac, '66 Buick Wildcat "SPECIAL" CARS - 1938 Pontiac Special six. 1310 yoke, Dana 60 used the heavy duty yoke which takes the larger 1350 yoke. var I=new Image(1,1); I.src=u; of torque to the pinion gear and the gear ratio of the ring-and-pinion is say 4.12:1, the output torque is 412 ft./lbs. GU6 - 3.42's Standard manual trans gear ratio. The GM 8.2" axle is available in two configurations: The standard GM 8.2" version features an 8.2" diameter ring gear with 28 spline axle shafts that are held in place using c-clips. The End of an Era. Q: What cars did they originally come in? Six rib cases will be found on '57 and '58 rearends, '59-64s have seven ribs. Forbes and various locations throughout the Web and Automotive Magazines. The S10 10bolt 7.5/7.625" rear end is a good choice for the light low to medium horsepower small block cars. The now famous Ford 9-inch, with it's unique, straddle mounted pinion, offered great strength for its weight, but even the heavy-duty nodular-iron version suffered from weaknesses that the 9.3-inch did not. var u='http://50chevy.freeservers.com/cgi-bin/sitestats.gif?p='+escape(location.href)+';r='+escape(document.referrer)+';t='+t.getTime(); Prices and availability are subject 0000001170 00000 n (Dart/Duster) with V8&3/4 axle, Table taken from "How to Build lx ?ZXj^|\\(|ka(XKIg#+ but the body with is 1" wider on 66-67. Real World Hagerty Collector Car Insurance Claim Experience, How To Be Prepared For A Dyno Session And Not Waste Your Money, Holey Goat Father/Son Texas Road Trip 5 Days, and 2000+ Miles, Are You Killing The Hot Rod Community? GM / Chevy - Differential IdentificationShop by your differential. '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger '69 Oldsmobile 88, '72 Chrysler 1956 and back have 10-spline axles. Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars . To say I was disappointed by the service provided by this company would be an understatement. 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 Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass. In searching the web I found the following links that have a massive of information on rear end widths and wanted to share. "Stovebolt" Specifications. Very hard to find set, being as this is version is not being reproduced. 1958-1970 Full size Chevy rear differential identification chart. Hot Rod Blueprints, Drawings and Tech Tips For The Hot Rod Enthusiast!. %PDF-1.4 % CK 15/35, S10, RV. The new 9.3-inch provided outstanding durability when subjected to abuse from all classes of race cars, including Top Fuel. 5D med-duty 4-pinion. xref 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. 62" 64-77 Chevelle, 73-76 Torino, 89 '70 Duster , '71-77 Maverick (Rear Wheel Drive) +20 offset. Understanding Aluminum Heads and Spark Plugs, OK Go Needing/Getting ~ Its All In The Timing, An Online Magazine for DIY Hot Rod Builders. GM quit making the 9.3-inch in 1964. This reduced weight and eliminated the stock suspension, producing a spacious engine bay that eagerly accepted the chosen powerplant. Mavericks 8", All '75-77 6's & 8's Correct two piece design posi unit, exact for only 67 - 69 Firebird 10 bolt 8.2 rears. '55 -57 Chevrolet, 68-69 Fair lane 6 or 8 The Pontiac/Oldsmobile 9.3-inch is your axle. 71- Newer 2wd trucks use a 5 on 5 lug pattern . with 10 bolt axle, "A" body '72 Cricket You bring the gumption. Its pretty easy to find a good one if you are in an area with a few junkyards. All but a few of the old factory limited-slips had been gathered up and beaten to death. 0000002038 00000 n The most common GM unit for the 1982 to 1992 Camaro is the Saginaw style 10 bolt Chevy differential. used a 3.21 Dana 44 used a standard chevy Mopar Rear Axle. Compared side-by-side with the Chrysler, it boasted stronger gears and larger bearings. 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. 59" 68-83 Corvette , 67-70 Mustang/Cougar/Fairlane, 60" 55-64 Chevy '72 Chrysler. 0000000991 00000 n Mickey Thompson even produced aftermarket Olds and Pontiac magnesium gear cases that were frequently used in dragsters. sized GM Car, Malibu/Monte Carlo (82 up Metric Studs), 80 Granada & You can do this by multiplying by the gear ratio. candidate to replace the torque tube rear end or just get a better set of gears A solid front axle was found under the front of nearly every gasser. Another factor that made these rearends popular was the wide selection of factory gear ratios available, 2.56:1 through 4.30:1 while even lower drag racing cogs were available from aftermarket suppliers. '70 Nova Approximate rear end widths measured from backing plate to backing plate. 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. Why not a Ford? 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. Discussion in 'Traditional Hot Rods' started by Ruiner, Sep 4, 2006. Buick and Pontiac 10-bolt rear ends used flange-retained axles instead of the C-clip retained axles like those on Chevrolet rears. manufactured by Pontiac in United States. 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. They were robust, drop-out-style third members that offered the strength and serviceability racers required. Once I had determined the desired width with the loose wheels and tape measure I constructed a wood rear end out of a 2x4. Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. 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 . If you would like to compare the fit with a couple of different widths build your wooden rear end for the narrower width and then add shims to the ends to change the width. 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 . Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. The Dana rear end is a bolt in swap for the both the 8 3/8 and the 9 1/4, all rear ends can be had with the same size u joint yokes, vans are good place to. Vehicles with Similar . Real World Hagerty Collector Car Insurance Claim Experience, How To Be Prepared For A Dyno Session And Not Waste Your Money, Holey Goat Father/Son Texas Road Trip 5 Days, and 2000+ Miles, Are You Killing The Hot Rod Community? '67 Mustang V-8, '69 Firebird 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. Will only work with bolt in style axles. Ford continued cranking out the 9-inch in vast quantities well into the '80s. . 70 2wd 6 lug rear end 12 bolt Possible gear ratio's 3:08, 3:40, 3:73 70-81 4wd 6 lug reared 71- Newer 2wd trucks use a 5 on 5 lug pattern 71-76 Full Size Cars " "" "" ". '72-73 Mazda, '28-40 Ford , '57 - 59 Ford The other drawback is that you can only check for clearance at the height the jack stands are set to. And even though new internals were available from Fabcraft, the carriers were simply becoming too difficult to find. Drag Racing 101 ~ Everything You Need to Know! Drag Racing 101 ~ Everything You Need to Know! 1967 Pontiac GTO - Wheel & Tire Sizes, PCD, Offset and Rims specs | Wheel-Size.com. '72-73 Torino, STOCK CENTER TO CENTER SPRING PERCH DISTANCE, '69 Chevrolet Quick question, I'm looking at a '50 Pontiac and was wondering if it had a torque-tube or a driveshaft. 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70. Diagram. Many Ford 9-inch parts are made offshore; they have smaller bearings and smaller diameter gears requiring less material. Below matches. 0000006068 00000 n '70 Duster Engine Numbers. if you dont have a versailles just a regular 9 inch rear end,, that is also 60 ". The Trophy Track's strengthened bearing hubs even use larger-than-stock bearings, the same ones found on spools. The1971-'72 Buick GS/Skylark and Olds Cutlass A-body 8.5 10 bolt did not have C-clip axles. The 8.75-inch had slightly larger, 30-spline axleshafts compared to the P/O's 29-spline shafts; but by 1959, big 31-spline factory shafts were standard, and aftermarket shafts for the 9.3-inch eliminated any supposed shortcomings. Contributing information were Bob Welch, J Forbes and various locations throughout the Web and Automotive Magazines. i.e. 1982-1997. Housings with leaf springs were used under Pontiac and Olds in 1957 and Olds only in 1958-60; Pontiacs had coil . So why did the Ford 9-inch become the premier differential of modern day hot rodding? . plate to backing plate. ?|-Zce14^nF%67( }fSRaQfqX?|{8{>? VX5EX=b :"-'k>.VbyV^-nWxv-WgUtpo>sMhlI4ZV<4+s>|2k>\x{7M^^x. GM with 7.5 & 7.625 Ring Gears : 1985-1997. endstream endobj 19 0 obj<> endobj 21 0 obj<> endobj 22 0 obj<>/Font<>/ProcSet[/PDF/Text]/ExtGState<>>> endobj 23 0 obj<> endobj 24 0 obj<> endobj 25 0 obj[/ICCBased 36 0 R] endobj 26 0 obj<> endobj 27 0 obj<> endobj 28 0 obj<>stream //-->. A: Starting in 1937 Pontiac and Oldsmobile rearend designs slowly began to converge, to the point that in 1957 all major components were virtually interchangeable, with the exception of some brake components, suspension attachments, and axle housing/axle widths. 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. Pontiac/Olds rearends had been widely used full width under Gassers and other cars and even though lots of slingshot dragster pilots had their legs draped over a narrowed version, custom-width rearends were seldom seen in other applications and almost never under a street car. The 78-88 mid size GM cars use a 7.5" 10 bolt, which is about 58/5" wide. The simple cure when using wide tires with a stock-width rearend was to radius the fenders and let the tires hang out in the breeze. Wilwood Engineering, Inc. - 4700 Calle Bolero - Camarillo, CA 93012 - (805) 388-1188. '71 Comet BOP, Pontiac, Each. Find 1967 PONTIAC GTO Differential & Rear-End Components and get Free Shipping on Orders Over $99 at Summit Racing! 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. 60" 60's GMC and some Chevy's Dana 44 or Dana 60 with leaf springs 6 lug, Gear ratio's 3.21 to 3.92. var t=new Date(); SiteStats_3379(); May 7, 2009. GU5 - 3.23's Optional auto trans gear ratio. Needle BUILD IT YOURSELF - PARTS LISTS BUSHINGS TO ADAPT TUBE SIZE . Floor jack permits you to raise and lower wheels to check for clearance. 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