Dans '70 Z20 Posted September 20, 2014 Share Posted September 20, 2014 Hellwig Frame FX Kit for ’68-’72 Chevelle One of the most effective ways to improve the stiffness and handling of a Chevelle is to box the factory chassis. This process could take considerable time with measuring, cutting and fitting steel panels, however Hellwig Products is making the task easy and even more effective with their new custom fit Frame FX kit. Most Chevelles have an open C-channel chassis that is only 3” wide at the top and bottom. This design is inherently weak in handling torsion and marginal in bending. Hellwig’s Frame FX kit doubles the width of the tension side of the frame rail and closes the area for dramatic increases in torsional and bending stiffness. The new Frame FX kit is made up 14 pre-cut 10-gauge steel panels that match the thickness of the factory frame and fit into the weak points of the factory chassis. Hellwig also engineered another panel that adds an extra mount to tie the floor to the chassis to add even more strength to the entire car. In addition, brackets are provided to mount the transmission crossmember with enough adjustment to accommodate nearly any drivetrain configuration. The increased strength that the Frame FX kit provides results in handling and ride quality improvements while retaining the factory chassis and mounting points. If you’re adding a high powered drivetrain and bigger tires, the Frame FX Kit should be in your Chevelle’s future. Stiffen the factory chassis to improve the overall strength, handling and ride quality Supplied with 14 pre-formed steel panels that fit in weak areas of each factory frame rail Adds an extra body mount to secure the floor pan to the chassis for added stability Transmission crossmember mount allows multiple drivetrain configurations For more information about the Frame FX line and other Hellwig load and sway control components, check out: Hellwig Products or call 800-367-5480. Quote Link to comment Share on other sites More sharing options...
bigscaht Posted October 10, 2014 Share Posted October 10, 2014 man i wish this would have came out when i had the body off the frame....smh Quote Link to comment Share on other sites More sharing options...
Ynot Posted November 8, 2014 Share Posted November 8, 2014 will this be the same as our montes? http://www.summitracing.com/parts/hel-11100/applications/ have a 70 that im gonna pull frame in near future and was gonna box the frame. This seems would make it that much easier and can order it when i order my UMI suspension kit too.... Quote Link to comment Share on other sites More sharing options...
mightymouse Posted November 22, 2014 Share Posted November 22, 2014 I order the chevelle kit but haven't received it yet. I will post some pics when I get it and I stall it hopefully soon. Quote Link to comment Share on other sites More sharing options...
Ynot Posted November 27, 2014 Share Posted November 27, 2014 Awesome ty I'm making a parts list as we type. Quote Link to comment Share on other sites More sharing options...
mightymouse Posted December 4, 2014 Share Posted December 4, 2014 I received my frame fx kit today. Hopefully I can start the install this weekend! Quote Link to comment Share on other sites More sharing options...
Boots Posted December 4, 2014 Share Posted December 4, 2014 don't forget the install pics as you progress Quote Link to comment Share on other sites More sharing options...
mightymouse Posted December 11, 2014 Share Posted December 11, 2014 Working on the install. I'm taking pics and keeping notes on a few changes needed to fit our Montes Quote Link to comment Share on other sites More sharing options...
Ynot Posted December 15, 2014 Share Posted December 15, 2014 Cool thanks Quote Link to comment Share on other sites More sharing options...
mightymouse Posted December 27, 2014 Share Posted December 27, 2014 Almost done. I juse need to install the new cross member mount brackets and modify the cross member. Quote Link to comment Share on other sites More sharing options...
Ynot Posted December 28, 2014 Share Posted December 28, 2014 Pretty straight fwd? Is the xmember still adjustable or welded in? Quote Link to comment Share on other sites More sharing options...
mightymouse Posted December 30, 2014 Share Posted December 30, 2014 the install wasn't too bad. The cross member has about 4 inches of adjustment. I have a 700 r4 now and left room for a 4l80 or T56 in the future. The only thing that was different is the extra body mount install. Basically you weld a plate with a nutzert to the floor cross brace and a new bushing goes there. The monte floor must be slightly different because the bushing didn't sit level and the bracket was 1/4 inch lower than it was supposed to be on the frame side. I put the bushing on the belt sander and took about an 1/8 off to make the bushing square. I put the frame on screw jack and used a lazer level to measure all the frame heights. The kit comes with chevelle measurements. My car had been hit in the drivers front at some time so I wanted to ensure it was stI'll square. Although a 4 foot level would probably be all you really need. I used a large ratchet strap to preload the frame rails 1/2 inch and tacked in a brace. The early kits installed where expanding in the center too much probably from welding too fast. Once everything was fitted and tacked I started welding. From the center out welding opposite from the previous welds about an inch each time. Then let those welds cool 20 minutes. It took 2 full days but when I removed the brace the frame was perfect. If anyone has any questions about this kit installation a can give some other tips I figured out along the way. My email is matthewrlee81@gmail.com feel free to email me. 1 Quote Link to comment Share on other sites More sharing options...
mightymouse Posted June 26, 2015 Share Posted June 26, 2015 I haven't worked on this much lately. Got the frame back from the powder coater it turned out great. Quote Link to comment Share on other sites More sharing options...
1970montess Posted June 27, 2015 Share Posted June 27, 2015 I've been installing the frame FX kit on my Monte frame too. All I have left is the crossmember and welding the bottom completely. It's not that tough of an install. The biggest problem I think I'll have is getting the brackets for the crossmember in right, since I have a 4l80e the crossmember mount bracket is really close to the extra body mount bracket. I may have to do some trimming on the crossmember bracket, hopefully I'll know soon enough. I'll try to post some pics if I can figure out how. Quote Link to comment Share on other sites More sharing options...
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