| Flaming River Rack & Pinion Specification Chart | |||||||
| FR1520 | FR40001 | FR40002 | FR1501 | FR1502 | FR1503 | FR1507-1 | |
| Drag Racing Gear | Street Rod Gear | 5.0L Mustang | Omni R/P | ||||
| OEM Design Style | 79-93 Qk Mustang | 74-78 Pwr Mustang | 79-93 Pwr Mustang | '71-'72 Ford Pinto | '74-'78 Ford Mustang | '79-'93 Ford Mustang | 78-83 |
| Steering Design | Front Steer | Front Steer | Front Steer | Front Steer | Front Steer | Front Steer | Rear Steer |
| Housing Material | Die Cast Aluminum | Die Cast Aluminum | Die Cast Aluminum | Die Cast Aluminum | Die Cast Aluminum | Die Cast Aluminum | Die Cast Aluminum |
| Tube Material | Carbon Steel | 1026 Dom Steel Tubing | 1026 Dom Steel Tubing | Carbon Steel | Carbon Steel | Carbon Steel | Carbon Steel |
| Tube Plating | Chrome | Powder Coated | Powder Coated | Chrome | Chrome | Chrome | Chrome |
| No. Turns Lock-to-Lock | 3.32 | 2.7 | 2.7 | 3.75 | 3.92 | 3.98 | 4 |
| Total Rack Travel | 5.5 | 6.00 | 6.00 | 5.25" | 5.34" | 5.75 | 5.00 |
| Overall Length (end-to-end) | 45 | 45 | 45 | 45-1/2" | 45" | 45" | 39.68 |
| Housing Length | 20-3/8 | 19.5 | 19.5 | 18-1/2" | 20-7/8" | 20-3/8" | 18 |
| Housing O.D. | 2.1 Both Ends | 2.15 (1.98 @bellow clamp) | 2.15 (1.98 @bellow clamp) | 1.940" | 2.100" (both ends) | 2.100" (both ends) | 1.35 |
| Tube O.D. (passenger side) | 2.02(after powder coating) | 2.02(after powder coating) | 1.350" | -- | -- | -- | |
| Input Shaft Angle | 72° | 18° | 18° | 72 | 72 | 72 | 72 |
| Input Shaft Spline Size | 9/16"-26 | FR Pyramid | FR Pyramid | 26 spline | 26 spline | 26 spline | 26 spline |
| Input Shaft Length | 6.56 | 2.5-2.63 From Top of Valve Housing | 2.5-2.63 From Top of Valve Housing | 4.07" | 6.44" | 7.44" | 6.50 |
| Inner Socket Assy (ISA) | 24.50 | 24.25 | 24.25 | 24.29 | 24.50" | 24.50" | 23.77 |
| Center-to-Center Distance | |||||||
| ISA Rod Diameter | 0.551 | 0.551 | 0.551 | 14mm (.551") | 14mm (.551") | 14mm (.551") | 14mm (.551) |
| ISA Thread Size | 9/16"-18 | 9/16"-18 | 9/16"-18 | 1/2-20 x 2" | 9/16"-18 x 2-1/2" | 9/16"-18 x 2-1/2" | 9/16"-18 |
| Driver Side Mount | Spike (Bushing Req) | Spike (Bushing Req) | Spike (Bushing Req) | Foot (2 bolts req'd) | Spike (bushing req'd) | Spike (bushing req'd) | Foot (2 bolts reqd) |
| Passenger Side Mount | Spike (Bushing Req) | Spike (Bushing Req) | Spike (Bushing Req) | Strap | Spike (bushing req'd) | Spike (bushing req'd) | Clamp |
| Spike Mount Center-to-Center Distance | 15.50 | 16.00 | 15.50 | -- | 16.00" | 15.50" | -- |
| Bellows Material | Nitrile Rubber | TPV | TPV | Rubber | Nitrile Rubber | Nitrile Rubber | Nitrile Rubber |
| Bellows Part No. | FR1502B | 100163 | 100163 | FR1501B (pair) | FR1502B (pair) | FR1502B (pair) | FR1502B (pair) |
| Weight | 12 lbs. | 12 lbs. | 14 lbs. | 12 lbs. | 12 lbs. | ||
| Bushing Part No. | FR1600 (2 Req.) | FR1600 (2 Req.) | FR1600 (2 Req.) | N/A | FR1600 (2 req'd) | FR1600 (2 req'd) | N/A |
| Outer End Part No. | FR1603 (2 Req.) | FR1601 (2 Req.) | FR1601 (2 Req.) | N/A | FR1601 (2 req'd) | FR1603 (2 req'd) | FR1601 (2 reqd) |