Team - sorry, I have been sick this weekend. Car is being tuned but we believe the motor could be floating the valves above 5000 RPM's. My builder hopes to complete the tuning in the next couple days and I will post the dyno graph.
CoopZ06
If the power is dropping like a stone, it's most likely a valve control issue. If it's flatlining at 5000 rpm, it's the unlocked torque converter soaking up your power (not valve float). So what was it doing?
__________________ 2009 Pontiac G8 GT Vararam, EFI Live tuned, Cruising in 4 cylinder mode, hauling on 8. 2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAEMods list, Idle Sound Clip, WOT video, 183.092mph video 2007 Suburban 5.3L K&N FIPK, EFI Live tuned for max power and fuel economy. 2007 Jeep Grand Cherokee SRT8 sold: 12.12@112.70mph, 150.942mph Texas Mile. LS1,LS2,LS3,LS7 Custom Camshaft Specialist For custom camshaft help press here. Custom LSX drivability & dyno tuning by appointment only.
Just heard from my builder (MC Racing) in Kansas City and they have just started tuning on my max effort 346 build. I should have dyno numbers later today or tomorrow. Attached below is the mod list, this car is a purpose built drag car and will never see the street.
Lets see some input on what power and torque the car puts down. I will post up dyno graphs later this weekend. Attached below are the modifications.
TrickFlow 215cc CNCd heads - decked for 12.0 compression and race gas
PRC Gold Valve Spings (good for .650 lift)
Custon Cam - 247/251 .623/.623 113+3
Calles Forged Rods
ARP rod bolts
COMP Hi Performance Lifters
Yella Terra 1.7 Roller Rockers
Diamond forged Pistons (with valve reliefs)
American Racing 1 7/8 LT with bullet turndowns
Melling Oil Pump
NA 347 Motor
Vengance Ported 92mm Intake and TB
Custom Ram Air
Other Mods - Turbo 400 RMVB
Precision Shifter
10Pt Cro-Moly Cage
Kirkey Race Seat & 6pt Harness
Grant Quick Release Steering Wheel
Strange Front & Rear Drag Brakes
Billet Specialities Drag Wheels (Front & Rear)
S60 with 35 spline axles & spool (4.11 gears)
MT ET Fronts (26x4.5) & Rear (28X10.5)
QA1 Shocks - All four corners
Yank 4500 Stall
Custom Driveshaft
Full Suspension Mods.
Weight of Car should be 3200lbs with me in the car. Radio, Speakers, AC, HVAC, Seats have been removed.
CoopZ06
Why'd you swap out the TFS springs for the PRC springs? If I recall correctly, the latest TFS springs are more like the PRC Platinum springs in terms of seat pressure. Unless you have early TFS heads??
Why'd you swap out the TFS springs for the PRC springs? If I recall correctly, the latest TFS springs are more like the PRC Platinum springs in terms of seat pressure. Unless you have early TFS heads??
The PRC springs I believe are 360 lbs open, the Platinum are 400 lbs open, the TFS heads come with springs that are 450 lbs open, they are the same as the AFR 8019 $100 upgrade spring.
If you took the springs that came with the heads off, then you most likely put a much lesser spring back on.
Max effort w/ 12:1, hydrolic cam and an off the shelf intake?
I know a guy down in Gardner KS with a 15:1cr 347, low tension rings, perfessionally ported TFS heads, single plane intake, HUGE (.65x lift) hydrolic cam and custom 12" collectors off 1-7/8s LTs with turn downs. I wouldn't even call that "max effort"!
But if you are curious he made ~470rwhp through a Neil Chance (6k rpm) converter and a TH350.
The PRC springs I believe are 360 lbs open, the Platinum are 400 lbs open, the TFS heads come with springs that are 450 lbs open, they are the same as the AFR 8019 $100 upgrade spring.
If you took the springs that came with the heads off, then you most likely put a much lesser spring back on.
The PRC springs I believe are 360 lbs open, the Platinum are 400 lbs open, the TFS heads come with springs that are 450 lbs open, they are the same as the AFR 8019 $100 upgrade spring.
If you took the springs that came with the heads off, then you most likely put a much lesser spring back on.
Yes thank you TFS for changing to those springs, after I told them I changed every set I got anyway, saves my customers a couple $$$
Im putting togther about the same setup motor wise though you have better headers, slightly larger cam and 1pt more compression then do.
__________________ 2000 NBM A4 Camaro SS #8156 -- 10.85@127.96 MPH 1.66 60' The SS in action! 2001 SOM A4 Camaro SS #487 --- 11.01@129.11 MPH 1.71 60' No Traction
Sorry for the delay, we ran into numerous problems with the car. The transmission was junk and the converter was incorrect for the application. I finally heard the motor fire in person yesterday and it sounded great. It should be on the dyno this week.
good to hear, Sorry to had troubles at least you have your issues worked out and can start to enjoy the car plus you have some better parts now good luck on the dyno should be a beast.
I got mine running last week should also finish tuning and hit the dyno next week.
__________________ 2000 NBM A4 Camaro SS #8156 -- 10.85@127.96 MPH 1.66 60' The SS in action! 2001 SOM A4 Camaro SS #487 --- 11.01@129.11 MPH 1.71 60' No Traction
Sorry for the delay, we ran into numerous problems with the car. The transmission was junk and the converter was incorrect for the application. I finally heard the motor fire in person yesterday and it sounded great. It should be on the dyno this week.
CoopZ06
Should be a good track car and the heads are nice and those LSL lobes are good too. I think your trans and converter were eating a lot of your power for sure.
Keep us updated. We wanna see what she runs. Each build is special and this one sounds like a strong setup and is prob gonna run mid to low 10's once you get all the bugs worked out. What are your goals for this car? I plan on building something close to this real soon also!!!
-shane
__________________ 2003 cobra vert- Sold, ported heads, ford gt cams, whipple, a million hp!!!
Had to trade switch over to real world, "don't need boost to make power"
Talked to Coop today!!! All the bugs are worked out and she was on the dyno today..... until it ran out of fuel.... Racetronix is going in and they will be back on the dyno tomorrow....
__________________ 2003 cobra vert- Sold, ported heads, ford gt cams, whipple, a million hp!!!
Had to trade switch over to real world, "don't need boost to make power"
Talked to Coop today!!! All the bugs are worked out and she was on the dyno today..... until it ran out of fuel.... Racetronix is going in and they will be back on the dyno tomorrow....
Tomorrow has come and passed, Any new news?
__________________ 2000 NBM A4 Camaro SS #8156 -- 10.85@127.96 MPH 1.66 60' The SS in action! 2001 SOM A4 Camaro SS #487 --- 11.01@129.11 MPH 1.71 60' No Traction
Thats no good. Dont let this run of bad luck discourage you man.
__________________ 2000 NBM A4 Camaro SS #8156 -- 10.85@127.96 MPH 1.66 60' The SS in action! 2001 SOM A4 Camaro SS #487 --- 11.01@129.11 MPH 1.71 60' No Traction
