Amerkin

This is the dyno graph from my new set up on The Silver Bullet. This was done on a Dynocom Industries in ground dyno at Calspeed and Performance. The car is an '08 C6 ZO6 with all OEM components except the following:
Vararam VR-SC1R CAI
Pfadt Tri-Y headers 1 7/8in., x-pipe w/cats
McLeod RXT clutch and aluminum flywheel
Tick adjustable clutch master cylinder
Katech C5 timing chain
ATI 10% under drive pulley kit
180 degree thermostat
NGK TR6 spark plugs
MSD plug wires
LS9 54 lbs/hr injectors
NW 102 throttle body
Fast 102 intake manifold (port matched to heads by Tony Mamo)
LS7 OEM casting heads (ported by Tony Mamo, CFM 398int/264ext @.650 Tony also cc'd and milled the heads to achieve 11.7 to 1 CR factoring in the thinner .041 gasket to improve quench) with OEM valves, bronze guides, GM 1.8 rocker arms with Compcams trunion kit
Johnson Limited Travel hydraulic lifters with EDM axle oiling
Compcams custom grind camshaft spec'd by Jim Voyles of Calspeed and Performance 235/246 (LSL intake lobe/LXL exhaust lobe) .657/.652 lift, +4 degrees advance ground in, 113 LSA
Snow methanol kit with controller, smallest nozzle
109 oct unleaded gas
640.9rwhp@6400rpm and 569.5rwtq@5200rpm SAE corrected
(on 91oct and methanol it did about 40hp less)

All labor and installation (except port work on heads and intake by Tony Mamo) done by Jim Voyles team at Calspeed and Performance. Tuning was done by Jim Voyles.
This car has very near stock drivability, idles at 900-950 rpm, and can be driven at 1000rpm in 5th gear with no ****** and jerk bucking. The acceleration is instant from right above idle and carries well to 7200rpm where the power is down only 15-20hp from it's peak at 6400. It makes 450ft/lbs at 2200rpm, passes 500ft/lbs at 3200rpm and carries over 500ft/lbs to well past 6500rpm for a very broad power band. This car mph's quickly to say the least.

I want to thank Tony Mamo and Jim Voyles for collectively working on this combo. They both know an amazing amount about making power.
Tony's incredible flow work on induction systems is legendary and unsurpassed to my knowledge. His philosophy of a port just big enough to get it done and not any larger than necessary, keeps the air velocity high even at low lift and rpm numbers, making for a broad power band possible even on a high rpm capable motor. His advice always results in more power and the best quality work attainable. The Johnson lifter choice was his recommendation (I had never heard of them, previously they did all OEM work various manufacturers), and has proven itself with a very healthy high rpm smooth power delivery. Jim's shop is gaining quite the reputation for putting out very fast LS (mainly but not solely) powered cars. I've seen many different configurations for making power (forced induction and normally aspirated) come out of his shop with very creative design work by Jim. Jim's cars just simply work and work very well. His tuning skills are spot on and the drivability of this combo has actually shocked me, in how good it is. I have to admit, with the goals I had set for power delivery, I wasn't expecting it to have great drivability and was ready to accept some roughness down low in the rpm range. I knew Jim could get it to drive well, but he has far exceeded that. Great job. I will be racing in the 1/2 mile soon and running at the drag strip soon also. I'll let you know the numbers when.

kenw

Great number, you should be happy.

DaOtherOne

Great numbers

ProEFI

Great numbers

double06

What amount of timing were you able to run with the high octane gas/methanol? Typical on regular gas is like 22-23 degrees.

Da Z06

Nice power band! Got to love it!

BayAreaSS

Congrats that's a lot of power. Looks like you accomplished what you wanted. Looking forward to seeing how it traps at shift sector and what it runs in the 1/4 mile

WHY TRY?

Awesome #'s!!!! So what did you make w/o meth?

edmundu

IS that figure at 6k plus rpm's, or near trq peak 4.8-5.2k rpm's?

I have a similar setup, perhaps a bit more compression, I'm milled .065, but with stock head gasket .051. I figure I have around 12.3-12.4:1.

On pump 93, I can run 22-23 but only at 6.2k plus rpm's. Around my trq peak of 5-5.2k, more like 17-17.5


I am looking into either meth injection or some octane booster to be able to get some timing back to the low 20's at peak trq, and a couple more at max rpm's. But first I think I will just run racegas on the dyno to verify if it even is worth doing. For under 20whp, not worth the hassle, but if I could see 30-40whp, probably worth my while

Amerkin

I believe it was 28 degrees and no KR. On 91oct and meth I think it was 24.

Amerkin

A 50/50 blend of 91/109oct resulted in 630rwhp/539rwtq.

Amerkin

I'm not sure on that. As I said on the previous post, the 640hp run had I believe 28 degrees. I assume that was at peak hp, not sure what it was at peak tq. I'll talk with the tuner and get back to you.

Amerkin

Thanks for the compliments. And yes Tony and Jim working together brought in the desired result and then some! Now the old guy just has to get it down the runway and track. Looking forward to seeing you at Coalinga.

0Shane@CountyCorvette

Good HP numbers & killer torque. Nice job man! I'd love to see what this will trap in the 1/4 mile.

-Shane

x88

Wow, those are good results! Do you have any idea how much the underdrive pulley accounted for? 10 hp? Or more?

JMB

Wow, congrat's on an incredible set up! I don't think anyone noticed that this power/torque level was THROUGH CAT's....wow, just wow!!!! 1st rate set-up, Mamo is the man!

BayAreaSS

I know you'll get it down track and runway just fine haha. I'll be there Saturday.

robz

I like the graph. Nice setup. Have fun with it.

TomcatMF

Very cool. Are your mods smog legal in CA?

blackz97

Bahahahahahah