bx goat

The car made 486rwhp and 463rwtq tuned with Kooks LT's offroad, B&B bullets and TKO drop in filter. After I read about that whole exhaust valve issue some LS7's were having I decided to swap them out with stainless valves and mill the heads .030 while they were off. After tuning the car is now making 502rwhp and 483rwtq. Gain of 16hp and 20tq. I had a chance to wind her out on my way back home and honestly wasn't expecting to feel anything but I was suprised when the tach hit 4k. This thing just just catapulted forward. I can only imagine how it feels with something like a torquer cam.

I'd also like to thank ECS for the work. Great guys and atmosphere at the shop. Keep up the good work

Fartpipe

Congrats, beautiful car aswell..... whats the dip torque at 4800rpm-5300rpm?

bx goat

Thanks bro! No clue what that dip is. Hopefully someone chimes in cause now it's got me thinking as well lol

DOUG @ ECS

Thanks! Very nice car.


The dip is a simple drop in timing during torque peak to suppress detonation in the tune. Being that the graph is squished down to less then half the page it in that setting, it amplifies any small dip dramatically.
Post up the "normal" style graph we gave you, that people are used to seeing, and it looks normal.

Thanks again!

bx goat

Thanks bud! Here's the other graph with the old and new numbers.

madmax13

Impressive. Lots of new power everywhere. How much did that run you, if you don't mind me asking?

bx goat

A little over a grand with the street tune and labor.

BearZ06

Great info, thanks!

Burnin4

very nice! now throw a cam and an lsxr intake in there

dfinke23

Nice! Where does milling .030 put the CR?

bx goat

11.3-11.4 range. Don't know for sure.

bx goat

DSOM Z06

Great job! Can't wait to see where I end up will milled & PP heads??????? Of course a FAST intake and NW TB will be on the car as well.........

bx goat

Thanks and good luck to with yours

Chalky

Very impressive. Did you keep stock springs?

bx goat

Thank you and yes ECS kept the stock valve springs. I talked to a number of valve spring manufacturers and all of them stated that the stock valve springs were best for the stock cam.

SharkbyteLT4

nice results

zeshawn

thats a huge gain for the fact that the heads are milled only, not ported/polished, but I doubt 0.2-0.4 increase in compression would net that much, or does it?

TNTZ06

Did you use the stock pushrods?

Nice power gain.

dfinke23

I have always questioned how much porting and polishing the LS7 heads actually gain. IMO, 80% of the gains from a port, polish, mill job comes from the MILLING, that is why you never see the guys that offer the service test their heads with porting and polishing only. The porting and polishing is where they make their money, milling only costs a couple hundred dollars.