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CalTracs - Trucks
CalTracs Truck (7610-300)
1968-1972 Ford F-100 2WD with 3 inch diameter axle tube
Designed especially for trucks, axle BELOW springs. Bolt On traction system. Full pre-load adjustability, keeps axle from rotating/maintains pinion angle, eliminates spring wrap up, improves 60′ times. Black powder coated. Berlin-style pivot plates for most applications.
Specializing in leaf spring traction systems since 1995, the Calvert Racing Team knows what it takes to get your truck hooking harder than ever whether you’re drag racing, sled pulling or just towing. Helps eliminate wheel hop. Designed by racers for racers, CalTracs boasts unsurpassed quality and craftsmanship; the competition is eliminated right off the starting line. The preload link is made with Chromoly, lightweight but strong, ensuring maximum leverage and minimum flex. HD Rod Ends have a radial static load capacity of over 14,000 pounds. Two-piece aluminum front spring eye bushings assembly keeps the front pivot squared and rigid. The rear mounts are made with 5/16” mild steel to withstand the correct torque on your u-bolts, keeping the rear end from moving.
This kit requires and INCLUDES a set of square u-bolts.
SQUARE U-BOLTS (spring OVER axle): Calvert Racing’s square u-bolts are 9/16″ ” diameter. We recommend torqueing truck/square u-bolts to 90-100 foot lbs. After running the vehicle down the track a few times, we also recommending checking the u-bolts and readjusting if necessary. Please see FAQ page or CalTracs Installation Guide for more info.
FULL COLOR INSTALLATION GUIDE INCLUDED.
NOTE: Your final product may vary from photo depending on your application. Some applications require additional hardware. If your axle tube measures 3.25 inches diameter, please see part #7610-325
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CalTracs Rear Mounts
CalTracs Rear Spring Mount (MT-2)
1970-1981 Chevrolet Camaro.
SOLD SEPARATELY
Rear Spring Mount for CalTracs assembly
Made with 5/16″ mild steel to withstand the correct torque on your u-bolts and keep your rear-end from moving. Black gloss powder coated for extra durability.
MOUNT FITS BOTH LEFT AND RIGHT SIDE.
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CalTracs Pivot Plates
CalTracs Pivot Plates/set of 4 (PL-0423)
SET OF FOUR PLATES, THREE HOLES
Designed for RACING VEHICLES. Three holes for adjustability on lifted Trucks. Made with 5/16″ Mild Steel, black powder coated for added durability. 6.5″ long, measured from center of spring eye to bottom of plate.
IMPORTANT: INCLUDE YEAR, MAKE AND MODEL IN THE CUSTOMER NOTES SECTION SO WE MAY VERIFY THE CORRECT PARTS ARE SENT.
NOTE: It is recommended that you begin using the hole that allows the traction bars to be most parallel to the ground when your vehicle is fully loaded, weight on tires. Adjust according to how your vehicle responds and your desired level of hook.
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Lifestyle
L Black T-Shirt (T-LB)
LARGE BLACK T-SHIRT
Note: Currently our of stock. Should be back in stock the first week of January 2021
50/50 Cotton/Poly blend for comfort and ease of wear. Silk screened front and back. Machine washable.
(T-LB shown)
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Accessories
U-Bolts, Round/set, 3.5″x9″ (UR350x90)
SET OF FOUR ROUND U-BOLTS w/hardware
3.5″ axle diameter x 9″ long, axle ABOVE springs
Round U-bolts, Grade 5 steel, rust resistant coating, 1/2″ diameter, Sets include 4 U-bolts, with nuts and washers.
NOTE: While you can use your vehicle’s stock ubolts with CalTracs, Calvert Racing’s 1/2″ diameter u-bolts is an upgrade as most stock applications come with 7/16″ diameter u-bolts. We recommend torqueing the u-bolts to 65-70 foot lbs. After running the vehicle down the track a few times, we also recommending checking the u-bolts and readjusting if necessary. Please see the FAQ page on this website or CalTracs Installation Guide for more info.
(UR225x70 shown)
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Accessories
U-Bolts, Round/set, 2.75″x9″ (UR275x90)
SET OF FOUR ROUND U-BOLTS w/hardware
2.75″ axle diameter x 9″ long, for axle ABOVE springs
Round U-bolts, zinc plated Grade 5 material, 1/2″ diameter, kits include 4 U-bolts, with nuts and washers.
NOTE: While you can use your vehicle’s stock ubolts with CalTracs, Calvert Racing’s 1/2″ diameter u-bolts is an upgrade as most stock applications come with 7/16″ diameter u-bolts. We recommend torqueing the u-bolts to 65-70 foot lbs. After running the vehicle down the track a few times, we also recommending checking the u-bolts and readjusting if necessary. Please see the FAQ page on this website or CalTracs Installation Guide for more info.
(UR275x70 shown)
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Leafsprings
Split Mono Leafsprings/pair Stock Height (420-35)
1963-1976 Dodge Dart
1962-1976 Dodge Demon
1964-1969 Plymouth Barracuda
1970-1976 Plymouth Duster
1962-1964 Plymouth Savoy
1960-1976 Plymouth Scamp
1960-1966 Plymouth Valiant
STOCK HEIGHT SPLIT MONO LEAFSPRINGS, PER PAIR
Tested on the fastest stock suspension cars in the world, Calvert’s Split Mono Leafsprings are designed to control and reduce excessive body separation in rear suspension and plants the rear tires without unloading.
All of Calvert Racing’s Split Mono Leafsprings are assembled to order with grade 8 hardware and heavy-duty alignment clamps. Aluminum bushings are pressed into the front spring eyes and polyurethane bushings in the rear spring eyes, these springs have been proven to withstand over 2,500 HP at ¼ mile ETs in the 6s.
NOTE: Calvert Racing Springs are designed for DRAG RACING and have a higher spring rate / stiffer ride than stock springs. Spring halves are dipped in black paint before assembly, but some raw steel may show due to deburring/grinding sharp edges.
Calvert Split Mono Leafsprings are designed to work with CalTracs to maintain arch. While street driving does not put undue stress on the springs, racing with Calvert springs without a traction device installed may result in bent or de-arched springs.
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CalTracs Rear Mounts
CalTracs Rear Spring Mount, Left (MT-37L)
Chevrolet S10 with shock mounts.
SOLD SEPARATELY
LEFT Rear Spring Mount for CalTracs assembly.
Made with 5/16″ mild steel to withstand the correct torque on your u-bolts and keep your rear-end from moving. Black gloss powder coated for extra durability.
RIGHT mount available, part # MT-37R
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