i built a T5 hybrid, 26 spline count camaro guts in an S10-15-sonoma housing.
i run a 292 e/w 500 edelbrock, split langdon headers, clifford h2o intake, corvette clutch and pressure plate, stock pedals and have it all connected to a 1977 44x4 1/2ton 3.40:1 rear end which has 2.75'' wide stock brakes.
she runs a treat
REAR END RPM RATIO / TIRE CALCULATION
http://www.smokemup.com/auto_math/index.php#3A real accurate way to determine your tire diameter is to draw a line on the bottom of your tire, then draw a line on the ground which lines up with the line you just drew on your tire. Then move the car until the car makes one full rotation of the tire and mark the ground where the line on the tire is at the bottom again. Now measure the length between the two lines and divide by pie (3.14) and you'll have your tire diameter to use on the calculator (don't forget to use inches). This is the preferred method to use in determining your actual tire diameter.
1951 Delux Chevy P/U T~5 Camaro Hybrid / S~10 in S~10 Case
Transmission Ratios:
1st: 2.95 2nd: 1.94 3rd: 1.34 4th: 1 5th: 0.74
Tire Diameter 1: 27.5 inches
Rear Gear Ratio 1: 2.75:1
MPH
RPM 1st 2nd 3rd 4th 5th 6th
1000 10 15 21 29 39 0
1500 15 22 32 43 58 0
2000 19 29 43 57 77 0
2500 24 37 53 71 96 0
3000 29 44 64 86 116 0
3500 34 52 75 100 135 0
4000 39 59 85 114 154 0
4500 44 66 96 129 174 0
5000 48 74 107 143 193 0
5500 53 81 117 157 212 0
6000 58 88 128 171 232 0
6500 63 96 139 186 251 0
7000 68 103 149 200 270 0
7500 73 110 160 214 289 0
8000 77 118 171 228 309 0
Tire Diameter 2: 27.5 inches
Rear Gear Ratio 2: 2.90:1
MPH
RPM 1st 2nd 3rd 4th 5th 6th
1000 9 14 20 27 37 0
1500 14 21 30 41 55 0
2000 18 28 40 54 73 0
2500 23 35 51 68 91 0
3000 28 42 61 81 110 0
3500 32 49 71 95 128 0
4000 37 56 81 108 146 0
4500 41 63 91 122 165 0
5000 46 70 101 135 183 0
5500 50 77 111 149 201 0
6000 55 84 121 162 220 0
6500 60 91 131 176 238 0
7000 64 98 141 190 256 0
7500 69 105 152 203 274 0
8000 73 112 162 217 293 0
Tire Diameter 1: 27.5 inches
Rear Gear Ratio 1: 3.00:1
MPH
RPM 1st 2nd 3rd 4th 5th 6th
1000 9 13 20 26 35 0
1500 13 20 29 39 53 0
2000 18 27 39 52 71 0
2500 22 34 49 65 88 0
3000 27 40 59 79 106 0
3500 31 47 68 92 124 0
4000 35 54 78 105 142 0
4500 40 61 88 118 159 0
5000 44 67 98 131 177 0
5500 49 74 107 144 195 0
6000 53 81 117 157 212 0
6500 58 88 127 170 230 0
7000 62 94 137 183 248 0
7500 67 101 147 196 265 0
8000 71 108 156 209 283 0
Tire Diameter 2 27.5 inches
Rear Gear Ratio 2: 3.10:1
MPH
RPM 1st 2nd 3rd 4th 5th 6th
1000 9 13 19 25 34 0
1500 13 20 28 38 51 0
2000 17 26 38 51 68 0
2500 21 33 47 63 86 0
3000 26 39 57 76 103 0
3500 30 46 66 89 120 0
4000 34 52 76 101 137 0
4500 39 59 85 114 154 0
5000 43 65 95 127 171 0
5500 47 72 104 139 188 0
6000 52 78 113 152 205 0
6500 56 85 123 165 223 0
7000 60 91 132 177 240 0
7500 64 98 142 190 257 0
8000 69 104 151 203 274 0
Tire Diameter 1: 27.5 inches
Rear Gear Ratio 1: 3.25:1
MPH
RPM 1st 2nd 3rd 4th 5th 6th
1000 8 12 18 24 33 0
1500 12 19 27 36 49 0
2000 16 25 36 48 65 0
2500 20 31 45 60 82 0
3000 25 37 54 72 98 0
3500 29 44 63 85 114 0
4000 33 50 72 97 131 0
4500 37 56 81 109 147 0
5000 41 62 90 121 163 0
5500 45 69 99 133 180 0
6000 49 75 108 145 196 0
6500 53 81 117 157 212 0
7000 57 87 126 169 229 0
7500 61 93 135 181 245 0
8000 66 100 144 193 261 0
Transmission Ratios:
1st: 2.95 2nd: 1.94 3rd: 1.34 4th: 1 5th: 0.74
Tire Diameter 2: 27.5 inches
Rear Gear Ratio 2: 3.40:1
MPH
RPM 1st 2nd 3rd 4th 5th 6th
1000 8 12 17 23 31 0
1500 12 18 26 35 47 0
2000 16 24 34 46 62 0
2500 20 30 43 58 78 0
3000 23 36 52 69 94 0
3500 27 42 60 81 109 0
4000 31 48 69 92 125 0
4500 35 54 78 104 140 0
5000 39 60 86 115 156 0
5500 43 65 95 127 172 0
6000 47 71 103 139 187 0
6500 51 77 112 150 203 0
7000 55 83 121 162 219 0
7500 59 89 129 173 234 0
8000 63 95 138 185 250 0
28 inch tires
Tire Diameter 1: 28.0 inches
Rear Gear Ratio 1: 2.75:1
MPH
RPM 1st 2nd 3rd 4th 5th 6th
1000 10 15 22 29 39 0
1500 15 22 33 44 59 0
2000 20 30 43 58 79 0
2500 25 37 54 73 98 0
3000 30 45 65 87 118 0
3500 35 52 76 102 138 0
4000 39 60 87 116 157 0
4500 44 67 98 131 177 0
5000 49 75 109 145 196 0
5500 54 82 119 160 216 0
6000 59 90 130 174 236 0
6500 64 97 141 189 255 0
7000 69 105 152 204 275 0
7500 74 112 163 218 295 0
8000 79 120 174 233 314 0
Tire Diameter 2: 28.0 inches
Rear Gear Ratio 2: 2.90:1
MPH
RPM 1st 2nd 3rd 4th 5th 6th
1000 9 14 21 28 37 0
1500 14 21 31 41 56 0
2000 19 28 41 55 75 0
2500 23 36 51 69 93 0
3000 28 43 62 83 112 0
3500 33 50 72 97 130 0
4000 37 57 82 110 149 0
4500 42 64 93 124 168 0
5000 47 71 103 138 186 0
5500 51 78 113 152 205 0
6000 56 85 123 165 224 0
6500 61 92 134 179 242 0
7000 65 99 144 193 261 0
7500 70 107 154 207 279 0
8000 75 114 165 221 298 0
Tire Diameter 1: 28.0 inches
Rear Gear Ratio 1: 3.00:1
MPH
RPM 1st 2nd 3rd 4th 5th 6th
1000 9 14 20 27 36 0
1500 14 21 30 40 54 0
2000 18 27 40 53 72 0
2500 23 34 50 67 90 0
3000 27 41 60 80 108 0
3500 32 48 70 93 126 0
4000 36 55 80 107 144 0
4500 41 62 90 120 162 0
5000 45 69 99 133 180 0
5500 50 76 109 147 198 0
6000 54 82 119 160 216 0
6500 59 89 129 173 234 0
7000 63 96 139 187 252 0
7500 68 103 149 200 270 0
8000 72 110 159 213 288 0
http://www.smokemup.com/auto_math/index.php#3Tire Diameter 2: 28.0 inches
Rear Gear Ratio 2: 3.10:1
MPH
RPM 1st 2nd 3rd 4th 5th 6th
1000 9 13 19 26 35 0
1500 13 20 29 39 52 0
2000 17 27 39 52 70 0
2500 22 33 48 64 87 0
3000 26 40 58 77 105 0
3500 31 47 67 90 122 0
4000 35 53 77 103 139 0
4500 39 60 87 116 157 0
5000 44 66 96 129 174 0
5500 48 73 106 142 192 0
6000 52 80 116 155 209 0
6500 57 86 125 168 227 0
7000 61 93 135 181 244 0
7500 66 100 144 193 261 0
8000 70 106 154 206 279 0
Transmission Ratios:
1st: 2.95 2nd: 1.94 3rd: 1.34 4th: 1 5th: 0.74
Tire Diameter 1: 28 inches
Rear Gear Ratio 1: 3.25:1
MPH
RPM 1st 2nd 3rd 4th 5th 6th
1000 8 13 18 25 33 0
1500 13 19 28 37 50 0
2000 17 25 37 49 67 0
2500 21 32 46 62 83 0
3000 25 38 55 74 100 0
3500 29 44 64 86 116 0
4000 33 51 73 98 133 0
4500 38 57 83 111 150 0
5000 42 63 92 123 166 0
5500 46 70 101 135 183 0
6000 50 76 110 148 200 0
6500 54 82 119 160 216 0
7000 58 89 129 172 233 0
7500 63 95 138 185 249 0
8000 67 101 147 197 266 0
Tire Diameter 2: 28 inches
Rear Gear Ratio 2: 3.40:1
MPH
RPM 1st 2nd 3rd 4th 5th 6th
1000 8 12 18 24 32 0
1500 12 18 26 35 48 0
2000 16 24 35 47 64 0
2500 20 30 44 59 79 0
3000 24 36 53 71 95 0
3500 28 42 61 82 111 0
4000 32 48 70 94 127 0
4500 36 55 79 106 143 0
5000 40 61 88 118 159 0
5500 44 67 97 129 175 0
6000 48 73 105 141 191 0
6500 52 79 114 153 207 0
7000 56 85 123 165 222 0
7500 60 91 132 176 238 0
8000 64 97 140 188 254 0
Suspension Measurements
REAR SUSPENSION:
The following is a general list of rear ends and their dimensions to help narrow the search for a possible candidate to replace the torque tube rear end or just get a better set of gears for highway driving.
Advance Design Trucks seem to be using rear ends with widths ranging from 58"- 62". I'm not sure of the Task Force width ranges at this time.
Contributing information were Bob Welch, J Forbes and various locations throughout the Web and Automotive Magazines.
Rear Axle Measurements
MEASURED ACROSS WHEEL MOUNTING SURFACE
56 1/2" 71-77 Ford Maverick 8",
57" 71-74 V-8 Mavericks 8", All '75-77 6's & 8's Maverick 5 Lug 8", 49-51 Ford, 57-59 Ford 9"
57 1/4" 64 1/2 - 65 Mustang
58" 78-88 Mid sized GM Car, Malibu/Monte Carlo (82 up Metric Studs), 80 Granada & Lincoln Versailles,
67-70 Mustang/Cougar/Fairlane, Regal with 10 bolt axle, S-10 P.U., 65-67 Nova
58 1/2 " Ford Grenada
59" 68-83 Corvette
60" 55-64 Chevy Car, 67-69 Camaro, 64-67 Chevelle, 68-74 Nova, 71-73 Mustang/Cougar, 84-95 Corvette
60-61" 64-69 1/2 ton 2wd Chevy/ Some GMC 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70
62" 64-77 Chevelle, 73-76 Torino, 89 Trans Am,
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 " "" "" "
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. 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.
Approximate rear end widths measured from backing plate to backing plate.
Add Width to compensate for drums as follows:
4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars
48" - 49" 50" - 51" 52" - 53"
'71 Colt
'72 Cricket
'72-75 Datsun Pickup
'72-73 Mazda '65 Ram American
'74 Valiant '28-40 Ford , '57 - 59 Ford
'62 Buick Skylark, '67 Chevrolet Six
'67 Mustang Six , '68 AMX
'69 Javelin Six , '70 dodge
'70 Duster , '71-77 Maverick
'71 Comet , '71- 72 Pinto
54" -55" 56" -57" 58" - 59"
'39 -48 Chevrolet, '68 GTO
'41 -48 Ford, '68-72 Chevelle
'55 -57 Chevrolet, 68-69 Fair lane 6 or 8
'66 Falcon, '69 Chevrolet
'67 Mustang V-8, '69 Firebird
'69 Cougar, '71 -73 Nova
'73 Ventura, '73 Mustang '36 Plymouth, '54-56 Ford Pickup
'67 Lincoln, '69 Dodge
'69 Dodge Van, '71 Torino
'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
'72-73 Torino
STOCK CENTER TO CENTER SPRING PERCH DISTANCE
25" 39" 42" 42 1/2
'68 - 72 Chevelle '71 Colt
'73 Mazda '68 -71 Fairlane/Torino
'49-51 Ford '69 Chevrolet
'69 Nova
'71 - 72 Pinto
'73 Ventura
43" 43 1/2" 44" 46 1/4"
'65 Ram American
'64 1/2-'65 Mustang
'67 Mustang
'70's Ford Grenada
'69 Firebird
'70 Dodge '71-77 Maverick
'70 Duster
'70 Nova
'71 Comet
'72 Dart
'72 Cougar
'74 Valiant '57 Ford
'67 Chevrolet Six
'68 AMX
'69 Javelin Six '69 Dodge
47 1/2" 48" 51" 57 1/2"
'39 -48 Chevrolet
'67 Chevrolet big car
'72 Charger
'72 Chrysler '69 Dodge Van
'69 Ford Van '67 Lincoln
BACK TO TOP OF PAGE
The following list of extensive information was contributed by R. Welch:
Original Vehicles
Rear Suspension Width (Flange to Flange)
Year Classic Vehicles Width
26-39 Plymouth-Dodge car/pick up 56-58"
40-52 Plymouth-Dodge car 60-62"
26-39 Chrysler/DeSoto Car 60"
Most Early Mopar's 56-62"
25-39 Chevy Car 56-58"
26-46 Chevy Truck 56-58"
40-48 Chevy Car 58-60"
49-54 Chevy Car 58-60"
47-54 & 55 1st Series Chevy Truck 60-62"
Most Early Buick,Olds, Pontiac 58-61"
28-31 Ford Car/Pickup 57 1/2"
32 & 33-34 Ford Car/Pickup 56 1/2"
35-48 Ford Car 57-60"
35-41 Ford Pickup 56-60"
49-58 Ford Car 57-58"
49-56 Mercury 57-58"
49-51 Mercury 61"
64 Falcon 58"
67 Cougar 60"
55-59 Chevy Pickup 62"
Donor Vehicles Front and Rear
Suspension Width (Flange to Flange)
Year Classic Vehicles Width Front Width Rear
74-79 Ford Mustang II/Pinto & Mercury Capri/Bobcat 55 ½" 55 ½"
71-77 Ford Maverick with 8" axle 56 ½"
75-80 Ford Granada with 8" axle 57 ½"
64-66 Mustang 57"
67-71 Mustang 59"
72-73 Mustang 60"
67-69 , & 60" Camaro 60"
64-67 Chevelle 60"
55-64 Chevy car 60"
65-67 Nova 58"
68-72 Nova 60" 60"
78 & up Monte Carlo, Regal, etc. with 10 bolt axle 58" 58"
68-72 Chevelle with 10 bolt axle 61 ½"
89 Trans AM (Disc brake) 62"
76-80 Camaro/Firebird 61 ½" 60 ½"
68-83 Corvette 58 ½" 59 ½"
84-95 Corvette 59 ½" 60 ½"
Early 70's "A" body (Dart/Duster) with V8&3/4 axle 58"
"E" Body (Cuda) with V8&3/4 axle 58"
Dodge Dart 59" 55 ½"
Plymouth Volare & Dodge Aspen 61" 60 ½"
71 Blazer (6 lug) 63 ¾"
75-78 Granada 9" (43" perch to perch) 52 ¼"
75-78 Maverick 9" (43" perch to perch) 56 ¼"
81-87 Olds Cutlass 58 ½"
FRONT SUSPENSION INFORMATION
Track Width of Popular Donor Car Clips
Manufacture Model Years Track Front/Rear Curb Weight
Chevrolet Nova 68-74 59.8-59.6 3,770
Buick Apollo 68-74 59.1-58.8 3760
Pontiac GTO 68-74 59.9-59.6 3880
Chevrolet Corvette 68-83 58.7-59.5 3655
84-95 59.6-60.4 3890
Chevrolet Camaro (Z28) 76-80 61.3-60.5 3820
Pontiac Firebird (TA) 76-80 61.3-60.5 3900
Ford Mustang II 74-79 55.6-55.8 3305
Pinto 74-79 55.6-55.8 3305
Mercury Capri 74-79 55.6-55.8 3305
Bobcat 74-79 55.6-55.8 3305
Chevrolet Monte Carlo 78-86 58.5-58.8 3235
Buick Century 78-86 59.0-58.8 3700
Pontiac Grand Prix 78-86 58.9-59.0 3735
Plymouth Volare 75-79 61.0-60.5 3395
Dodge Aspen 75-79 61.0-60.5 3395
Dodge Dart 76 59.2-55.6 3600
Table taken from "How to Build a Custom Classic Truck" Peterson Publication; June or July 1999
Written by: Don Emmons & Mike Briggs
Want to know about swapping out a rear end.
and what to use Here's food for thought.... on 50’s chevy’s By: Jim Forbes
The 82-newer Camaros are wider than the older ones, so you should stick with the 70-81 models. The 75-79 Nova uses the same rear as these older Camaros, I believe. The 68-74 Nova chassis is the same as a 67-69 Camaro; the 75-79 Nova chassis is the same as the 70-81 Camaro. The 82-newer Camaros used the small 7.5" rear-end design that the 78-newer Malibu/Monte Carlo/regal/cutlass etc used, but it's quite a bit wider. Some of the 82-newer Camaros used different rear ends, such as the Dana 44, and some weird Australian rear-end. Of course, if you want to make sure, get out your tape measure and check yourself! I may be wrong.
Here's another one from Jim on the subject---- There are lots of rear ends available! Some fit better than others. For 6 lug rear ends, the 64-69 1/2 ton 2wd Chevy (and some GMC) trucks have a 12 bolt rear, about 60-61" wide (I measure them where the wheels bolt on). The 70 2wd and 70-81 4wd have a 6 lug 12 bolt that is a couple inches wider, but will fit under an Advanced Design or Task Force truck as long as you don't get too wild with wheel/tire width. The heavy duty models have a 2.75’’ brake shoe, that’s stopping power. The 12 bolt truck rear ends from the 60s usually had 3.70 gears, which is a bit much for extended highway driving at 75 mph. You can swap the differential carrier and ring/pinion gears from a later TRUCK or VAN 12 bolt, the 70s trucks usually had 3.08 or 3.40 gears. Of course, you'll need to know how to set up ring/pinion gears, bearing preload, and all that other neat stuff to do this. These 60s truck 12 bolt rear ends are from coil spring trucks, so the perches are in the wrong place, and they have some extra stuff on the housing for a panhard bar, which you won't need with leaf springs. Most 60s GMC trucks, and some Chevys, had Dana 44 or Dana 60 rear ends, and leaf springs. These rear ends are 6 lug, about 60" wide, and will bolt into a Task Force truck (with some fudging, the perches are about 1/2" too far apart). The brakes use different parking brake cables, which is a problem, and the drums have a different offset. Gear ratios range from 3.21 to 3.92 normally, the 3.21 is found behind some GMC V-6 engines, and is a nice ratio for an old truck. The Dana 44 uses a standard Chevy 1310 yoke, but the Dana 60 uses a heavy duty yoke, which takes a larger 1350 series ujoint. A similar Dana 40 rear-end was available as an option in 59 Chevy trucks, equipped with positraction...rare, and with a 3.92 ratio. I have one of these rear ends; it was in my extended cab truck...I'm saving it for when I build a race truck (one of these years).
The 71 and newer 2wd trucks use a 5 lug 5" bolt pattern, same as the 71-76 full size cars. There is not much available in the way of matching front brake rotors that will fit an old truck, so this rear-end is not too popular a swap, unless you get the 70-up 4wd 6 lug axles. Chevy also used 10 or 12 bolt rear ends in lots of cars, in varying widths. The heavy duty models have a 2.75’’ brake shoe. A common one is the 61" wide 70s vintage Camaro/Chevelle/Nova (and clones) 8.5" rear-end. In Camaros/Novas it has leaf springs, but the perches won't work with old truck springs. In Chevelles, it has coil springs, with lots of extra brackets to cut off, and the cast in mounting "eyes" on top, where the upper control arm bushings fit. Wheel bolt pattern is 4.75", and there are front disk brake kits available to match, or you can use the 53-54 car front hubs/drums on the original 50s truck brakes, to get the same bolt pattern front/rear. This is a good rear-end for using in an old truck, the ratios are commonly 2.73-3.36, with higher gears available. The axle shafts are usually worn out in these things, so check them (pull the cover, lockpin, and C clips out to get them loose) where they ride in the wheel bearings...before buying the rear-end! 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. It has the 4.75" bolt pattern, and ratios are usually 3.55-3.73, but sometimes you'll find a 3.36. The 78-88 mid size GM cars use a 7.5" 10 bolt, which is about 58/5" wide. This rear-end would work well in an early (older than 47) truck, but it is quite light duty. Ratios are usually 2.29-3.23, which means you want some torque in the engine to pull it...but rpm will be low. This is a coil spring rear-end, with all the mounting brackets that need to be cut off. The Ford 8" and 9" rear ends come in a whole bunch of varieties, and only a few are useful in oletrucks. The late 50s full size cars have a nice one, but it's not easy to find brake hardware, drum, etc anymore. The mid 60s midsize cars, such as the Fairlane, have a rear-end that is about the right width, and would be a good candidate...if you can find one. The Maverick/Granada is very narrow, about 56.5", and would not fit anything but a very early truck, or perhaps a tubbed Pro Street truck. The 60s full size Ford car rear ends are usually too wide, but if you find one, measure it and see! Most earlier full size, and all mid size, cars use the 4.5" bolt pattern, while later full size cars use the 5" pattern. The Ford trucks have a big 5 on 5.5" pattern, with a big center that takes some work to redrill to anything Chevy. Ratios range from 2.47 to 4.30, and the axles come in 28 or 31 spline varieties. There is lots of interchange possible with the 9" rear-end, which is why it's so popular...I have one in my 55 Belair, and in my 57 Suburban chassis. Unfortunately, they are getting expensive, especially when you have to shop around for just the right one that will fit. So...if you don't know if a rear-end will fit, or what it came from, get out your tape measure and see for yourself! The most important things are overall width, and wheel bolt pattern...then concern yourself with ratio. I like a 2.75-3.0 ratio for a V-8 powered truck that will spend lots of time on the highway; about 3.2-3.7 for a 6 cylinder or small V-8 for in town and limited highway use, and the stock 3.9-4.56 ratio is great if you have to use your truck to haul lotsa weight, and you don't have much engine...just don't plan on going much faster than 55!
http://www.chevytrucks.org/tech/file:///Users/jim/Documents/Chevrolet/DRIVE%20LINE/Want%20to%20know%20about%20swapping%20out%20a%20rear%20end%20and%
happy reading
i have a picture log link below to view
i moved my rear axle back 2.5'' and wish i'd gone 3.0''
