LS3 418 Stroker,Nightfury cam GM CNC LS3 Heads
 

Hi,i Recently Upgrade my Engine with a LS3 thompson 418 LS3 block, with GM CNC LS3 ,Night fury cam,and Fast 102mm intake With Full Exhaust,.do you think i can Reach 550 RWHP with this configuration?i expect to get minium 500-500 RWHP on my ls3 M6 camaro.
thanks for your help.

Why Thompson?
Hope it goes well let us know what you make....

hi,thompson is a good guy ,i have experiences in LSx ,the car feels great ,but i dont know if my heads and cam are good to reach the 550 RWHP mark.
thanks!

I think the camshaft is to small for 550rwhp.

in the past i saw a post that someone with LG CAM put 550 rwhp ,i think the nightfury and LG are very simir in the specs.by the way my compression is 11:8:1
thanks!

Seems like you got it figured out.
Let us know how it turned out.

I have an idea,and my butt dyno tells me im about at 500 hp,i put this to see if someone with similar setup like me is over 500 hp thanks for your help

With this build I'm at 531 rw / 519 tq

LRB Performance: http://www.lrbperformance.com/
417 CI
Manley pistons 4cc flat top
Total Seal AP Gold ring set
Compstar rods 6.125
Compstar 4.000 wet sump crankshaft
ARP main stud kit
King Engine Bearings

Latozke Racing Heads: http://www.latozkeracingheads.com/
CNC Stage 3
Cam: 235/247 on a 114+2

Installed by Florida Speed and Power
Tuned by Slowhawk Performance

Thought you made 564rwhp 533rwtq?

That's what I was told but never saw a Dyno sheet. I had it retuned at Slowhawk and I was there for the tune this time.

wow that's good numbers ,I will be happy with that numbers,but I don't know if my heads are not enough for 530hp,.

what intake are you using,ls3 or fast,thanks

For air flow I have a FAST intake with a ported Nick Williams TB and CAI. I bought the FAST and TB before I decided to stroke the motor. If you plan on installing a FAST, check around to determine if the bang for the buck is worth it. Depending on your build and what you plan to do with the extra HP, the stock intake might suit your needs. Maybe check around and compare the flow rate between a FAST (ported and not) vs. a stock LS 3 intake (ported or not). In hindsight, I wish I did.

Ok a stock ls3 no fuel upgrade yet mast heads jre rough idle blower cam fast 102 ported tb too 492.3 thru the factory cats. I am trying to justify using my 40& or building a new motor before it gets procharger

500rwhp should be no problem at all. guys are making 500rwhp with camshaft & cnc heads. We had a customer make 525rwhp with PRC 260cc heads & a 235/239 TSP camshaft on a stock bottom end!