Just had a new cam installed, along with a TH400/trans-brake/5000RPM converter and an LS1 pcm conversion (no opti/single coil any longer). Tuned locally here. Thought I'd share the numbers.

385 CI, 12.4:1 SCR
AI LT4 heads/intake
HR cam 246/254
Coan TH400/5000 rpm Coan Converter/t-brake
12-bolt/4.10 spool

 

That's excellent with the TH400, 12-bolt and 4.10. With same setup, I measured 19.8% drivetrain loss at the 400rwHP level. My stall isn't as high, posi in place of the spool, and it was a non-locking converter. If you had similar losses, you would be at 525HP at the flywheel.

 

That set up is making some awesome numbers

 

Nice setup. Any pics of your coil install?

 

Nice! So tempted to get this EFI system especially since I have no one local that can do an LT1 tune and not thrilled with mail order tunes. But there is Kaltech a few miles down from me that does dyno tunes.

Are you using a single or double roller? I've got a double roller and I've been told that EFI has a billet timing cover to fit double rollers and their reluctor wheel.

How easy was the harness install?

Wow! That's some serious driveline loss! What's the percentage with a T56 and a stock 10 bolt with 4.10's?

 

Harness install was cake for me. I dont know about anybody else. I bought mine pre made however. Congrats on the #'s throught that auto SSMPSTR. I am loving not having to worry about ignition problems with this setup. My tuner even said he could tell a difference in how it runs and the mannerism of the vehicle.

 

Congrats on the nice #s. PM sent.