The C4 was an exciting and innovative car. One amusing thing was that the earlier cars were prone to squeaks and rattles. This generated a 16 page TSB of how to fix them. Things like "Locate wiring harness C. Relocate 1/4" to the right. Secure in place." 16 pages! All of that was incorporated into the production models. Being able to get the digital readouts for oil pressure/oil temp and such were very neat for its time, too. After the TPI 350s came online, the cars came more into their own. A better package than the prior dual TBI fuel system.
In that time, there were three or so Chevys that would go into OD/lockup converter at WOT. Corvettes and IROC-Zs, police vehicles, and diesel pickups. Everything else would not go into OD at WOT, much less lockup the torque converter.
I really liked the tilt front structure. Sit on the front tire and change the spark plugs, for example. In all of the brackets which held the bumper supports and other structure, there were adjustment slots longer than any I'd ever seen. Lots of adjustment space! The front end of the frame was the first HSLA (high-strength low allow) frame which GM (or others?) had used in a production car. GM had used a similar metal for bumper reinforcements, starting with the B-cars in '77. NO heat was to be used for straightening, as it was claimed to diminish the strength of the affected area, yet some insurance company adjusters said "Do it anyway", although GM literature said "NO!" Be that as it may.
On the cars with the BOSE sound system upgrade, which were many of them, the front speakers were hidden under the ledge of the instrument panel ends. The stock stereo had speakers on the top of the instrument panel, which gave it a more spatial sound rather than "lots of sound" from the BOSE system. I actually sought out an area dealer with a stock base stereo just to confirm my suspicion that the base radio was better than the BOSE unit.
Neat cars! Lots of tech under the skin! Really good performance, all things considered.
CBODY67