Building your first limited modified (Southern Sportmod 2011)
I am writing this for first time limited modified racers and builders. I have been a racer and car builder since 1965 and I know how hard it is to build a car when you have not done it before. First if you are new to the sport and this is your first modified race car then you are going to have a learning curve the first year. Don't try to build a high dollar car for your first one. Unless have some experience racing a dirt car you are not going to go out and win races your first year. So save some money and just build a safe dependable limited modified with out the extras, who knows you might not like racing. First off are you mechanically inclined, can you weld or do know someone that can, do you have a place to work, do you have the tools? If the answer is no then your better go buy a car race ready.
if you want to build your own chassis, this can save you some money. You can buy
a ready built chassis for approximately $1500-$2000 click on this link to view a
you are going to build your own chassis find a Mid-size GM
1978-1987 car with metric full frames only with 108” wheel base as per OEM
specifications of stock. You can find 1981- 1984 Buick Regal's cheap, you don't
need motor and trans. make sure frame is not bent. The best way is to turn the
car up on it's side, remove gas tank, remove master cylinder, gas lines, save
brake lines and unbolt the frame from body. Make sure you are not going
have the car or frame fall on you. Take the frame and clean it up. Then
you can remove the front suspension parts, rear end, brake lines and save all
the parts. Set the frame on jack stands on a level surface. With a cutting torch
cut off all body mounts, other brackets you do not need, do not cut any
suspension or shock mounts. Grind and clean where you cut off mounts. Front
frame horns can be cut off in front of the steering box and idler arm. Rear
frame rails may be cut off behind upper shock mounts. All
frame bolt holes must remain in stock location. Wheelbase will be checked with a
minimum of 107” and maximum of 109”.
these frame, engine location, roll cage rules before you cut or build
Now you know the chassis rules, frame is clean, on jack stands and you are ready to install roll cage, frame bracing, and engine plate mounts. Do not try to relocate upper control arm mounts, this has to be done in a jig. You can click here to look at a complete GM Frame.
If you don't have a tube bender or a source for a cage kit I would look at Speedways Motors modified cage and frame kit for approx. $680.00, you can't use the rear frame clip but it will get every thing else you need. Speedway has bumpers and nerf bars. Like I said at the beginning you need a Mig welder and a person that can weld, this is not the place to cut corners you life may depend on it.
2011 IMCA SportMod. Body
IMCA SportMod. Setup Tips