Ok, I need help everybody. I have a 67 Dart GT that has 14" wheels with a 4" bolt pattern and 9" drums. I would like to upgrade to front disks(or better drums) but everything I've found is for either 4.5" bolt patterns or 10" drums. What options are out there for me??? Please help!
Since you have factory drums, your best option is probably moving to the late A body '73 - '76 disc setup, which moves you from SBC 4" to LBC 4.5".
You are looking at new wheels and at least a re-drilling of your rear drums to the LBC 4.5" bolt circle, if you converted to LBC 4.5" wheels.
The '73-'76 A body disc calipers and rotors, as well as wheel bearings and seals are inexpensive so that's one big plus, along with being able to go in any auto parts store and order Mopar factory replacement parts.
However, when all is said and done with the '73-'76 LBC conversion, you will have spent a sizable amount of money, with the cost of new wheels and perhaps rear axles. Please keep in mind that if you do not already have the later A body front parts, e.g. the spindles, caliper adapters, control arms, etc. you will have to find those parts which will cost money --- sometimes as much as $300/350 for a full setup. Most of the time, You also must factor in the cost of new suspension parts for the LBC like ball joints, bushings , etc.
This all adds up in the $$$...
Scarebird does sell a conversion kit that uses a GM style caliper adapter, which will allow you to use GM calipers and rotors, + keep the SBC 4" bolt circle. A few people on this board have converted to this setup. With this setup, you keep your SBC 4" wheels, and you leave your rear drums/axles alone. The Scarebird conversion will cost somewhere in the $600 range, with new rotors, calipers, bearings and seals.
Hope this helps...
