A bolt circle of 4x100 would indicate a 4 lug pattern on a circle with a diameter of 100mm. There are many classic truck sites where they sell nearly anything for classic autos… There should be a sticker on the radiator shroud that gives timing and spark gap values. I'm pretty sure the '73-'87 were five lug wheels in half ton, except for the 4x4 trucks which are designated as K models. It sucks not being able to hear! Bolt patterns can be 3, 4, 5, 6, 7, 8 or 10 lug holes. Might wanna jump on their web-site and take a look around.
The 4x4 Rallye, introduced in '73 on the Blazer 4x4, will bolt up fine. All the Chevys I've done say 0 degrees btdc. Wheel Dimensions There are four important measurements that are used to categorize and identify a wheel for fitment purposes. How To Measure 5 Lug Bolt Patterns Measure 5 lug wheel bolt patterns from the outside edge to center distance between two studs that are across the hub from each other. Centerbore relates to the center hole in the wheel that centers the wheel on the hub of the car. The optional transmissions were the four speed manual, the Powerglide and the Turbo-Hydramatic 350 and 400. These packages consisted mostly of comfort features — nicer interiors, more padding and insulation, carpet, chrome trim, and upper and lower side molding and tailgate trim.
In 1968, Chevrolet celebrated 50 years of truck manufacturing, and to commemorate, they released a 50th Anniversary package, which featured an exclusive white-gold-white paint scheme. This expands the number of fitments the wheel applies to. That one has a 5x4. The 396, while still sold as such, was enlarged to 402 cubic inches starting in 1970. A utility variant, known as the K5 Blazer, was also introduced with a shorter wheelbase of 104 inches 2,642 mm. This measurement is your bolt pattern diameter.
There are a massive set of alloys on her now that I just dont like. For restoration, it should also be noted that the door and window cranks were slightly longer due to the molded plastic door panels, and the vent windows were now secured with a single screw on the inside of the door, thus differentiating it from the 1971 model year. The K models retained the same 6 lug pattern as the earlier trucks. How To Measure 5 Lug Bolt Patterns Measure 5 lug wheel bolt patterns from the outside edge to center distance between two studs that are across the hub from each other. This measurement is your bolt pattern diameter.
Ride height of truck inside spring and inside diameter of springs. So, if you want to use the rallys, you need to look for 1967-1969 model in 6 lug. Also, the small rear window cab was no longer available. However, the 1970s plastic inserts actually have highlights that break the appearance into six separate sections. Is the bolt pattern the same? There was also a 5 lug Rallye, used mostly on vans.
With the center hub diameter difference, does it prevent the wheels from mounting flush or what? Since most wheels are mass produced, they have a large center bore to accommodate several different vehicles. I thought they were all the same but found out the hard way. Anyway, thanks again for your reply. A bolt pattern of 5-115mm would mean the wheel has five bolt holes and they are 115mm apart measured across the center of the wheel. Check your vehicle owner manual for proper specifications. So, if you want to use the rallys, you need to look for 1967-1969 model in 6 lug. Luckily I didn't spend much since they were just rollers for a chassis.
An alternative might be a set of wheels from Wheel Vintiques I rather like the 33 series myself. Correct me if I'm wrong, but aren't Prostars only 5-lug? Some internal cab changes were also made, most notably the switch from a hand-operated parking brake to a foot pedal, and a more modern looking two-spoke steering wheel with plastic horn button replaced the previous year's three-spoke wheel with chrome horn button. Like I said, I could be wrong, but I've never seen a 6-lug, 5-spoke wheel. Always refer to Owner's Manual for proper factory specifications that take precedence over the listed recommendations. The K models retained the same 6 lug pattern as the earlier trucks. Since most wheels are mass produced, they have a large center bore to accommodate several different vehicles.
Below is a pic from the ebay page and some details. Luckily I didn't spend much since they were just rollers for a chassis. No warranties or guarantees are expressed or implied as to the accuracy of the information provided on this site. At first glance, the 1969 and 1970 grilles appear identical. I got a 72 C10 with 5 bolt rims. Finally, the front brakes on all light-duty trucks were switched from drum brakes to disc brakes, resulting in much less brake fade under heavy use. This centers the wheel perfectly on the hub ensuring that there is no run out when the wheel is installed on to the vehicle.
These trucks being 40 years old + having been through several owners you never know what they have changed on them. The bolt pattern is comprised of two numbers - the first indicates how many bolt holes are on the wheel, and the other describes how far apart they are. These Wheels were taken off a Brand New 2002 G-Van local Conversion Facility and have been in storage ever since Wheels are in excellent condition! When you install wheels for the first time, you should re-torque wheels after about 100km to 150km 60 to 90 miles. You'll also need new brake lines. Check your vehicle's manual for correct settings. Per the measurements I gave them. Hmmm, not sure what you're asking.
And then all new tie rods and ball joints it was preety cheap. Would you believe the shipping costs more than all the items together! This centers the wheel perfectly on the hub ensuring that there is no run out when the wheel is installed on to the vehicle. In both series, the 'Highlander package' included special color-coordinated houndstooth cloth inserts and additional trim colors and insulation. Torque: All alloy wheels should be installed using a torque wrench. In the 80's and 90's models the 2 wheel drive had a 5x5 bolt pattern. Several changes occurred in 1971.