I'm thinking there needs to be a 3rd link attatched to the top of the diff housing

The truck arm set up typically is triangulated and mounts around the transmission mount area

I am familiar with a typical truck-arm setup, and this setup essentially constrains the motion of the rear axle in the same way as a truck arm (or ladder bar for that matter). The way they mount to the axle is more reminiscent of a truck-arm to me than a ladder bar.

Anyway, I was just trying to make another analogy for folks to visualize.

The "trail-arms" or whatever you want to call them will control both the forward motion and the rotational motion of the rear axle. They will be in tension/compression and also experience a bending moment.

Could the pinion angle simply not be adjustable. Seeing that it just bolts to the stock spring perches, this is most likely the case. Would the pinion angle have to be adjustable for a ladder bar?

Im far from being a suspension expert or even technically inclined enough to understand half there is to know about it, but I, like many others here have been lead to believe that a ladder bar suspension was a no-no for serious cornering. This obviously works on this car seeing the results... but how?

The pinion angle in this case would have to be adjusted with angled shims. - - I think, unless I missed something.

I agree that I think angled shims would be required for pinion angle adjustments. And I have the exact same impression of a ladder bar setup, that's why I thought this might be something different that I wasn't seeing?

Perhaps Scott can chime in and clear it all up for me (us). :)

Once pinion angle has been determined it shouldnt need to be adjusted...
This suspension was designed as a very lost cost alternative for the average joe (like me) who cant afford detroit speed or ride tech equipment. It obviously works because Kevin (millertime179) has shown this at goodguys dallas and goodguys nashville where he was only 2 TENTHS of a second slower than Brian Finch! Apples to Apples this set up works!

Bryce

This is ladder bar/truck arm system or a combination of both. The pinion angle is set at install. It comes with new modified spring perches that need to be welded to the axle.

I knew there would be some questions about it and if it would work or not and that's ok. For me, it will work just fine.
I have taken a ride with Kevin in his 69 that has the same set up except his has poly bushings up front instead of the johnny joints. The car also has the least expensive coilover shocks on the market. The car plants itself very well in the corners and comes out smooth. Now, Kevin is a heck of a driver, and that has been proven at the two autoX events that he has entered in his car but, it does work and for the price it is hard to beat.

This is a rear suspension I used on my very first 69 camaro build back in 2004.I was on a very tight budget.It worked very well.When my son Kevin started his 69 camaro build a few years ago he also needed something that would work for his tight budget also.I have given it a lot of thought and the system could be redsigned too work even better and be very ajustable but then it would not be low cost any more.I had really never thought about building this for resale until we were at dallas (GG) this year and Shannon said he thought folks would be interested in it because it worked so well and didn't cost alot.And would be very easy to install w/o any trunk pan cutting.So far only 2 Drivers have been faster than Kevin at GoodGuy's.And they are running the best (Suspeneion) the world has to offer.Pinion angle can be ajusted when the spring perches are welded to the rear end.:thumbsup:

So I'm guessing at this point no third link on top of diff housing?

Scott, can you put together some numbers just so we can get an idea of cost?

Thanx Scott... Hopefully I didn't come across as questioning its performance, just trying to understand how it worked. :cheers: