Specs on subframes?

[Salt Racer]

Cdog,
Thanks for the kind words. I also would have appreciated some visual aids of a set of DD cups ;-)

I do agree that '88-'96 C4 and C5 parts are excellent, but like I said in other threads, the pickup points (aka pivot points) need to be arranged right.

MII-based IFS can be made to work reasonably well, though there are some limitations. If you give a set of MII spindles and a set of C4/C5 knuckles to a suspension engineer, there's no doubt he'll be able to make better suspension using Corvette stuff. But a good engineer can design a better suspension using MII spindles than a Corvette-based system designed by an intern. It's just like my leaf vs. link analogy.

Here's a real world example. Art Morrison's 55 has MII-based IFS. It put down pretty good numbers during testing conducted by SuperChevy. They also tested the '56 roadster w/ C5 running gear owned by Chris Titus on the same day. The car didn't fare as well as Morrison's 55. I'm not sure about the geometry of Mr. Titus' suspension, but Art Morrison told me the '56 roadster didn't even have sta bars (aka swaybars) and had leaky shocks at the time of testing. It's quite apparent that tuning and preparation played a big role. If you ever run into Mr. Titus, ask him about Morrison's 55. He got to ride shotgun in it on slalom course.

Major kudos to SC staff and Mr. Titus for publishing the actual testing data - they could have covered up the poor performance of C5-based '56 Chevy or not even publish it. Most people get lots of info from magazines - informing the truth is the only way this customer-driven industry can move forward.

As far as which subframe is best...I will have to leave the decisions up to you. I work for one of street rod companies, so it's not appropriate for me to sway your decisions towards one company or the other.

I think one of the members here has Morrison Tri. 4-bar setup in a Camaro. IIRC, his screen name is 70t/a or something. You may want to ask him about rear seat issue. If you don't mind using split rear seats like on a late model Camaro, 3-link with central UCA is also a possibility. The link can be covered up with elbow-height console or something if you're so inclined.