My '75 Monza 5.3/Turbo Build Thread
Dyno Tune Video!! 
11-21-2015, 08:50 AM
#29
Only 400 rwhp on that video. When i went to get it tuned and two problems happened, first my tuner didn't have any methanol mix (ran out a day prior) and my boost controller was stuck at 7 psi (lowest setting). Regardless the IAT's were way too high even on 7 psi @ 247 degrees. Timing is set at a max of 20 degrees, but the PCM is set to pull timing with high IAT. E85 is still the hero, otherwise it would be really bad.
A couple of weeks later I went to another dyno just to check numbers with the boost controller fixed and methanol in the wiper tank. I didn't look at the low boost number numbers, but the IAT had dropped to 90* (maybe 75* ambient). So I turned the boost up to 12 psi and it made 550 to the wheels. That was enough to absolutely annihilate a Hellcat at on drag radials (I was on M/T 26x10.15 ET Streets) a few weeks ago, but I killed the stockish TH350 (fragged the roller clutch, I am sure) in the process.
Just picked up the built one yesterday, 36 element sprag conversion, hardened input shaft, TransGo kit, direct piston machined for extra clutch pack, Alto Redo Eagle and Borg Warner clutches, Koleen Steels, dual bushed Vega lighened sun shell, dual feed drum, TH250 gundrilled/hollow output shaft, roller pump, roller first gear plantaries, etc. Should have it installed today, unfortunately gotta pull the engine to swap transmissions.
A couple of weeks later I went to another dyno just to check numbers with the boost controller fixed and methanol in the wiper tank. I didn't look at the low boost number numbers, but the IAT had dropped to 90* (maybe 75* ambient). So I turned the boost up to 12 psi and it made 550 to the wheels. That was enough to absolutely annihilate a Hellcat at on drag radials (I was on M/T 26x10.15 ET Streets) a few weeks ago, but I killed the stockish TH350 (fragged the roller clutch, I am sure) in the process.
Just picked up the built one yesterday, 36 element sprag conversion, hardened input shaft, TransGo kit, direct piston machined for extra clutch pack, Alto Redo Eagle and Borg Warner clutches, Koleen Steels, dual bushed Vega lighened sun shell, dual feed drum, TH250 gundrilled/hollow output shaft, roller pump, roller first gear plantaries, etc. Should have it installed today, unfortunately gotta pull the engine to swap transmissions.
11-22-2015, 12:00 AM
#30
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chevydarrell (01-02-2020)
03-07-2016, 09:19 AM
#32
Been running again since January. Made a few changes.
Moved the methanol nozzle to precompressor, no dyno to check changes but seems to run better and makes more boost with the boost controller at the same previous setting. So I turned it down. Currently about 11 psi.
Had the hood louvered over the Winter too, was having really high under hood temperatures. The louvers made a huge difference. Had the hood shot in semi gloss black too since attempting to color match 41 year old paint is futile.
Also installed racing harnesses and just recently racing seats.
Lastly, my custom plates came in, I can't believe it wasn't taken.....
Moved the methanol nozzle to precompressor, no dyno to check changes but seems to run better and makes more boost with the boost controller at the same previous setting. So I turned it down. Currently about 11 psi.
Had the hood louvered over the Winter too, was having really high under hood temperatures. The louvers made a huge difference. Had the hood shot in semi gloss black too since attempting to color match 41 year old paint is futile.
Also installed racing harnesses and just recently racing seats.
Lastly, my custom plates came in, I can't believe it wasn't taken.....
03-08-2016, 06:14 AM
#35
Teching In
Join Date: Dec 2012
Location: Indian Trail NC
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Hi there. Do you have any pictures of how you ran the left side turbo piping over to the turbo? I'm thinking o about doing this also, but i know nothing about turbos, fuel injection, or LS motors. Yet. It is pretty overwhelming when you have to learn everything new. Great build, i look forward to seeing this little car much more.
03-08-2016, 08:59 AM
#36
My setup has a log manifold, which if you can avoid using a log, it's best. If I had the room I would of used two factory manifolds, instead of just one. The driver side manifold feeds into the log manifold on the passenger side (about the middle) through the crossover tube that goes between the K member and oil pan sump.