Bumping this up- I went and had my Diablo weighed again today at the same place I had it done before. I wanted to know the difference in weight since I swapped in the LS4 drivetrain.
With 1/2 tank of gas (about the same as before) it weighed in at 3240lbs. So it gained 80lbs over the iron headed sbc/ 5 speed. I was hoping to loose a little weight on the car but considering I added a/c, more metal bracing, a bigger battery and a few more items I guess it sounds about right.
Yesterday I took it to the dyno, I wanted the tuner to look over the tune and do some tuning on the dyno since I had done about 100 miles worth of street tuning. Since the tuner/shop hasnt done any tuning with Mega/Microsquirt he didnt want to tune it. I kinda knew ahead of time with talking with him on the phone but he said bring it out anyway and he would look at it.
He looked over my tables and said they looked pretty good to him so we decided to put it on the dyno so I could atleast log the pulls and do my own tuning. We did 5 pulls with the 3rd pull putting down the best of 272hp/288tq. First couple pulls I had a couple drops on the graph which I think was do to some junk in one or more of my injectors. The 3rd and 4th were pretty close and the 5th was down a little maybe due to heat soak as all pulls were with in 45 minutes.
So overall Im pretty happy with the swap, the car runs great on the street. Its alot smoother and more enjoyable driving car now with the paddleshift instead of the fiero 5 speed. I can do a semi-agressive throttle smash and light up the huge rear tires with ease. The power band is so much better with the 4t65ehd now, before with the fiero 5 speed first gear was useless. Its not wicked fast but for a driver its 100% better now with the LS4.
I already have started on some much needed body work and will be ready for a repaint the first week in June. Im trying to find someone who can make some kind of digital a/c-heat control to run with my shadowdash/android but havnt had much success yet. Anyone know of anyone who can do programming like this?