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| Charlie Boy's 70 Chevelle 25.2 stock front car |
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| One of the more popular chassis upgrades over the last few years is the Pro-Mod style 25.2 "back-half chassis". Addressing the growth of classes like Outlaw 10.5, "Quick 8" type racing, and NMCA/PRO class racing, the Montana Brothers have brought their wealth of Pro-Mod chassis expertise to the world of "fast street car" drag racing. |
| "Charlie Boy" Micaliff - 1970 Chevelle - 25.2 chassis/stock front suspension car |
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| Step 5: Now that the 4 link bars are in place, the rest of the rear chassis can be completed. Unlike previous designs, all MBRC Pro Chassis use triangulated straight bars rather than "U" / Horseshoe bars or "X" bars. The end result is a stronger, lighter chassis that is stiffer than any other design. You can see the double framerails tying to the upper 4 link bar and driveshaft loop as an integral part of the chassis in the pictures above. |
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| Step 6: With the majority of the bars in place, we chose to jump ahead to doing some preliminary tin work on the floor and finalize our pedal placement. A double framerail car will occupy a majority of the center of the car and will necessitate a very wide driveline tunnel. As such, both the brake pedal and gas pedal were relocated 4" to the outside of the car. A trial fit by the car's owner verified the locations. A driver that is an uncomfortable seating position is at a disadvantage before they even arrive at the track. This is one of the key differences between a kit car and a professionally constructed car that is built to your specs. |
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| Step 7: Now that all the bars are in place we go back and final weld all joints and add braces to critical welds (upper left picture is the front of the cage as it meets the windshield/roof bars). Lifting the body off of the table 6"-8" allows for full welding penetration around the chassis where it cannot be seen (against the headliner). The next steps will be to final weld the body to the chassis, mount the rear end/wheels and tires and get the car back rolling on the shop floor. |
| Page 2 |
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| After a short detour to the body shop, the chassis is now painted and the quarter panels are looking better. The interior tinwork is replaced and the now powder coated rear suspension components are final fitted. Brake plumbing has been started and the project is getting closer to completion. |
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