Mini-sub frame kits for 67-70 Mustangs. http://www.classicperform.com/NewProducts/2006/NewFiles/NovaSubFrame.htm I have been reading about this kit over on Vintage-Mustang.com and Stangnet.com. The kit is getting good reviews form the people that have seen it or driven a car with it installed. The price of $689 for the kit seems very competitive to rebuilding your stock suspension. The kit consists of: It looks like the only major change would be a different plate to mount the lover control arm. Take a look at either of the Mustang sites, the CPP web site and chime in with your thoughts. Is this a kit that would interest you if made available for the Maverick / Comet? Maybe if there is enough interest, we can talk them into making this work with our cars.
It still looks like the springs are over the upper control arm. If that kit mounts the springs between the control arms it would get a lot of demand from the guys that want to do away with shock towers.
Yes, the springs are still over the upper control arms (UCA). The idea here is to eliminate the strut rods and replace the lower with something that doesn't twist and move in an unpredictable way. Those of you who are old enough probably remember when a Mustang II conversion used a strut rod instead of a triangular lower control arm (LCA). By repackaging the kits to use the new triangulated LCA, the kit became simpler, handling improved and you had less problems with alignments as the arc of motion for the LCA was the same throughout its range of motion. The strut rod bushings act as a bearing for the vertical motion of the strut rod. But the "bearing", when tightend, causes a wheel to be resisted in both vertical directions causing the wheel to loose contact with the road when going over bumps, rising slowly when hitting a bump and falling slowly when hitting a dip in the road. This results in a jarring and uncomfortable ride. Our current setup isn't bad but as the strut rod bushings wear, or age, all sorts of bad things happen to the suspension geometry. In the quest to "stiffen up" the front suspension, other types of strut rod bushings have been tried, sometimes with disastrous results. Poly strut rod bushings can cause a severe bind that causes stress on the rod, sometimes causing failure of the rod. You can buy heim joint strut rods which eliminate the bind but they are not cheap either and add more road noise and "feel" into the steering and chassis. Roller spring perches really help the suspension work by freeing up the up and down action of the suspension by removing a source of binding. Changing to an LCA with the elimination of the strut rods and the inherent bind would also make a huge amount of difference in the feel of the suspension. Much more like a new car that a 35 year old car.
