Presentation on theme: "My Vacation By Ed Bon July, 2007 I had mentioned to a few buddies that I felt the 2002 A4 (4-speed automatic) C5 Corvette I bought for Carole was in need."— Presentation transcript:
My Vacation By Ed Bon July, 2007 I had mentioned to a few buddies that I felt the 2002 A4 (4-speed automatic) C5 Corvette I bought for Carole was in need of a little massaging but I promised her I wouldn't break into the engine (yet, heh-heh). For the past few weeks I have been preparing for the changeover by buying all the parts and then taking a few days off of work to complete the upgrades. My plans included headers, a 3.42 ratio diff, a high stall torque converter, a tranny oil cooler and an insulated tunnel plate. I started on July 4th and finished off the last couple of details in a week. Carole, when she wasn't busy, spent a bit of time assisting me and shot a few of the following pictures. What follows is a photo-logue of the project.
I pre-assembled the American Racing Headers when they arrived to check out the fit.
I had the headers ceramic coated to reduce the under hood heat.
I had an extra bung welded in for future wideband tuning use.
This 3.42-ratio diff is the one out of my M6 C5 that I put 4.10’s in when the car had ~3K miles on it so it’s just broken in. The one I’m replacing is a 2.73 ratio.
Dave at Yank Converters made this and shipped it to me in record time when another vendor dropped the ball in sending me another TC I had ordered earlier. In retrospect, I am very happy about that because it turned out to be a much better choice than the original one I ordered.
I picked up a 72” tranny jack for a great price. This came in very handy as you’ll see.
In anticipation of a bit of messiness, I laid some cardboard down. I also rearranged some of the rolling cabinets to give better work area efficiency.
Got the car on the lift and jacked up to pull out the rear cross member.
I pushed the cross member back in position and lifted it into place with the jack. Then I jacked the lower A-arms up, reinserted the axles and reconnected the upper A-arms, shocks and brakes. Of course, there were the various lines, connectors and clips that need to be reconnected as well.
Moving on to the headers, I pulled the stock manifolds off and unbolted the alternator and starter.
Summary Getting the cooler hooked to the tranny fluid lines took a bit of imagination as there are no adapters for directly attaching a cooler to the lines for later model ‘02’s and later. I had to splice into the return line but it worked well. I also had an issue updating the PCM with the new diff ratio but I believe I now have that squared away as well. After topping the tranny off with fluid and triple checking all my work. I took the car for a long, relaxing ride (Yank says to break in the TC for 120 miles before any WOT runs.) The A4 is like a whole different car. It accelerates with authority and sounds much better (gears, TC and headers). The car is so much more responsive I was taken by surprise. Small throttle inputs now create significant surges of thrust forward. NO drivability has been lost – in fact, the car actually feels tighter than when it was stock. Carole reminded me about the Elite tunnel plate I installed and the billet-feel I was experiencing made more sense. The response of the car is definitely what I was hoping for – and I have been light-footed so far in deference to the new TC. Can’t wait to see what WOT is like. I have to rethink my whole attitude towards automatic Corvettes now. I have to say this A4 is very close to the fun factor of my head/cam/headered, etc. M6. Wait ‘til Carole drives this thing – she may never let me into the driver’s seat again. What a fun vacation!