Dyno'd 2) LS7's today.
 

On the engine dyno. Both engines were within 3 HP of each other. Tried a number of different things. Best results were with Cats and Air filter in place.
566.6 Hp and 521 lb ft engine #1
563.8 and 516.8 lb ft engine #2
We use an 06 ZO6 ecu with drive by wire pedal assembly. Still maintains std GM cold start mapping, AC anticipate signals and full sequential injection unlike some others out there. Idle smooth at 650-700 rpm.
445 lb ft at 2750 rpm.
What an incredible engine GM has given us.

Are these stock or do they have forged pistons? I assume premium unleaded. Good numbers!!

Stock, cast pistons. Yes, local pump gas, which has 10% ethanol.
Yea, I'm real happy with the numbers.

thats awesome numbers. Wish I had one.

Stielow's 2nd Gen
 

Mark Stielow needs to put one of these in a 2nd Gen F-body... preferably my 72 Formula! (c:]

Wonder why he's never done a 2nd-gen?

V/R,
Ty

Trust me 2 gens are coming strong at next ! DSE has allready started working on parts and my cousing bought 73 firebird "project G-bird" so its for sure now :cool: