Has a 468 cubic inch big block, 4 bolt main with TH400
This has a 16 gallon fuel cell, custom tubbed frame, S&W rear suspension 1-800-523-3353, Brute Strength rear differential with Richmond 411 gears, Moser axils 219-725-6689, rear disc rotors from '80 Firebird rear, '82 - '88 Camaro front calipers and pads, and caliper brackets made out of 3/8" steel.
'72 Pinto Manual Rack and Pinion
My invented Pinion Mounted Parking Brake. This tubbed application brought about the necessity to create this parking brake. the large offset rear wheels did not allow the capability of using the factory parking brake cables. This parking brake location solves that problem. Looks pretty trick too!
I am converting from stock 11” disc brakes to the GM B-body 12” front disc brakes. Also known as the “tall” spindle conversion. They are called “tall” because the spindle is taller than the A-body spindles. Also, they inherently lower the body to the road by about an inch. B-body refers to the full-size GM vehicles such as Impala or Caprice. There is a lot of information available on this conversion, but I will describe what I did. It is slightly different then you may find elsewhere.
You can use ’78-’84 B-body as a donor or ’85-’90, whish are stronger and lighter, or ’91-’96, but just ignore the ABS stuff. I used a ’90 Caprice Police car as my donor. Be sure the rotors measure 12”. Average Caprices and Impalas came with 11” rotors, but the SS, Police cars and wagons had the 12” rotors. The 12” rotors will not fit on the spindles made for 11” rotors. You have the option to use the donors rotors, which will come with 5 on 5” lug pattern or you can get the ’88-’92 Camaro 1LE rotors, which will fit the 5 on 4-3/4” lug pattern as you had originally. I chose the smaller lug pattern for this car because I already have the custom wheels with that pattern on them. From the donor I used the spindles and backing plates, turn the calipers in as cores for a new set of 1970 Chevelle calipers. The Chevelle calipers fit the spindles and give you the proper location for the brake hoses.
With the spindles sand blasted and painted, it is time to focus on the control arms. There are 2 types of factory front lower control arms; those with round rear bushings and those with oval. GM pretty much mixed and matched these at random. The round ones were the first design then the oval ones came about to give a little more shock absorption from pot holes and such. The round ones give you stiffer suspension, which is fine if you leave the round rear bushing rubber. But if you plan on driving on the street and want to use urethane bushings, I strongly recommend using the control arms with the oval bushings. The extra material in the oval bushings offset the stiffer urethane, resulting in a stiffer response suspension yet forgiving with shock from the road.
To mount the b-body spindles in the Chevelle lower control arms, the b-body ball joints must be turned down to 2.012” diameter in order to be press fit in the arms. Before the lower arms can me installed, the motor-frame mounts must be installed because the arms will block access to the brackets hardware. Next I pressed the new polygraphite bushings in. I prefer the graphite impregnated polyurethane over the straight polyurethane because it reduces the squeaking caused by no lubrication between the rubber and steel parts. Don’t forget to use the Formula 5 grease between the inner collars and the urethane bushings. After using the armor coated hardware kit I have also put together to mount the lower arms into the frame, the spindles are ready to be put on. Don’t tighten the bolts until all the vehicles weight is sitting on the suspension. The poly bushings need to rotate freely, without binding until the actual ride height is achieved before locking them down.
I have purchased new front springs with a 2-inch drop for my application. It is now time to look at the upper control arms. With the B-body spindle conversion, the spindle is taller, which changes the geometry of the upper control arms. Some people use offset shafts and lots of shims to compensate, other companies make shorter control arms specifically for this conversion. However, I found polepositionrp.com (888) 303-8555.
I ordered 9200M5 (8.25” –10”) w/metric steel cross shaft/ bolt in ball joint plate, requested: 5” & 6” sleeves w/ midsized plate and 6.5” cross shaft centers with OE pivots. These arms give all the versatility in adjustment with out requiring any shims. No shims give you the shortest distance between the arms pivot point and the ball-joint center. This equates to maximum camber roll on hard cornering, which makes the most use of the B-body spindles handling potential. The adjustable arms make doing alignments so much easier. Pole Position also offers home alignment kits. To mount the spindle to the upper arms just use the stock B-body upper ball-joint. The outmost ends of the brackets that are welded to the frame to mount the upper control arm shafts need to be bent in slightly to allow the upper arms to achieve maximum travel before hitting the frame.
This picture is to show where the brackets get bent in to clear upper control arms. The 2 places are located by the small pieces of white chalk. The area was freshly painted again because the paint chipped after hammering on it. If I’d have known, I’d have done this step prior to galvanizing and painting.
The ’70 Chevelle calipers fit these spindles without any modification. You can use ’69 Camaro front disk brake hoses with the Chevelle drum brake hose frame brackets, they are a few inches longer. Be sure to use the correct “Banjo” bolt. Napa #82701 is 1.1” long. You can also use ’78 Camaro hoses but you will need to use Banjo bolt Auto Zone # 313935 which is .9” long. The ’78 Camaro hoses are cheaper and do not have to be special ordered. I found this out after already purchasing my ’69 hoses, so that’s what I used. Or you could just use the stock Chevelle frame bracket and hoses.
I have cut the door frames, roof line and quarter window from a Chevelle coupe. I will be grafting the Chevelle sides in to make it a 2 door wagon with functional quarter windows and fill in the old side rear windows solid like a panel wagon.
Computer Generated 2 Door