I suppose this is long past overdue for an update, here's the cliff notes version:
I went and raced the NHRDA event in Arizona back in March, double classed the 11.90 index and 10.90 index. I came with a new larger "budget friendly" compound turbo setup 364.5sxe 73mm turbine w/.80 gated T3 housing over HT80 89mm.
Made a couple test runs for qualifying, picked up 5 mph in the 1/8th, blew a boot and still ran a new personal best of 10.7x @ 12x MPH. Fixed the boot, went into eliminations, and destroyed the rearend on the 1st elimination round of 10.90 index.
Sheared the pinion shaft on the dana 70 rear, broke an axle, and lots of bound up metal/bearing/ring and pinion fragments on the track and inside the pumpkin.
Going back together with a new "used" Dana 80 rearend, and hope to get a full pass down the track to see what the new turbo setup is capable of.
In short, with identical fueling/timing/etc, the upgrade from HT4B 83mm/ HE351 to HT80 89mm/ SXE364.5 bumped 1/8th mile trap speed from 102mph to 107mph. Didn't get a full pass to see how it would react on the big end but it sure felt good when it shifted into overdrive. I believe average HP increased over 100 HP with the new turbo system. I think with a small timing bump, it'll surpass 1000 RWHP on a build Farrell Diesel 650cc 215 pump.
