Rembrant Posted March 23, 2019 Share Posted March 23, 2019 Gentlemen, Quick question: Can a 1987-up cab be modified so that a Bullnose dash/interior can be installed? A "rust free" cab popped up for sale locally last night for cheap, and it was advertised as "85 style". I happened to notice in one of the pics that the 4x4 shifter hole was in the floor next to the tunnel cover. I mentioned that it looked like a 1988-up cab, and he said it was a later cab but that the firewall was modified so that a Bullnose dash could be installed. Is this possible? I haven't heard of anybody doing this before. Link to comment Share on other sites More sharing options...
85lebaront2 Posted March 23, 2019 Share Posted March 23, 2019 Biggest issue you will run into is the actual mounting points and VIN location for the dash. 1980-1986 dash boards are essentially "built up" from an assortment of metal and plastic parts. They attach to the cowl at the windshield base at 4 horizontal mounting tabs (Gary might have or be able to get pictures of them) there are two end mounts and over the steering column, VIN location was moved outboard about 1" starting in 1987 (try to find a correct 1980-1986 windshield). Parking brake pedals are different, but will interchange at the front as the location and firewall holes are the same. Wiring changed completely in 1987 and again in 1992. 1987-91 the dash harness and front harness join at a large round plug on the driver's side, 1980-1986, the dash and front harness are one assembly that goes from one headlight to the other by way of the dashboard. Brake pedal and column mount are different, but mount the same. Link to comment Share on other sites More sharing options...
Gary Lewis Posted March 23, 2019 Share Posted March 23, 2019 Biggest issue you will run into is the actual mounting points and VIN location for the dash. 1980-1986 dash boards are essentially "built up" from an assortment of metal and plastic parts. They attach to the cowl at the windshield base at 4 horizontal mounting tabs (Gary might have or be able to get pictures of them) there are two end mounts and over the steering column, VIN location was moved outboard about 1" starting in 1987 (try to find a correct 1980-1986 windshield). Parking brake pedals are different, but will interchange at the front as the location and firewall holes are the same. Wiring changed completely in 1987 and again in 1992. 1987-91 the dash harness and front harness join at a large round plug on the driver's side, 1980-1986, the dash and front harness are one assembly that goes from one headlight to the other by way of the dashboard. Brake pedal and column mount are different, but mount the same. And, there you have it. But, maybe mounting a Bullnose dash in a Bricknose can be done? I can provide Bullnose pics if needed. Link to comment Share on other sites More sharing options...
Steve83 Posted March 23, 2019 Share Posted March 23, 2019 ...the firewall was modified so that a Bullnose dash could be installed. Is this possible?The dash is just one consideration; the wiring is another. Depending on donor & target years & options, you might also have to deal with t-case shifter, chair bases, shoulder belts, steering column, EEC mounting... Link to comment Share on other sites More sharing options...
Rembrant Posted March 23, 2019 Author Share Posted March 23, 2019 ...the firewall was modified so that a Bullnose dash could be installed. Is this possible?The dash is just one consideration; the wiring is another. Depending on donor & target years & options, you might also have to deal with t-case shifter, chair bases, shoulder belts, steering column, EEC mounting... OK. I'm going to go have a look at this thing and see if I can figure out what year it is, and if it would work. Link to comment Share on other sites More sharing options...
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