LS2 / TEA 2.5 / BTR Stage 2 / Fast 92 / LG 1 3/4
03-21-2015, 06:25 PM
#1
LS2 / TEA 2.5 / BTR Stage 2 / Fast 92 / LG 1 3/4 Thanks to CMS for their thorough dyno time today. Car made 471/442, I had only put about 20 miles driving around on CMS's email starter tune so I'm glad it made the 3hr trip each way lol.
Parts list:
LS2 shortblock
TEA 2.5 243, turned down sodium filled LS3 valves, BTR springs, ti retainers, milled to 64cc
Fel Pro .041 headgasket
static compression 11.5:1
BTR stage 2 cam, 227/234, .614/.576, 113+3 Cloyes hex-adjust timing gears / chain
Melling medium volume oil pump, blueprinted
Johnson short travel lifters
BTR pushrods
Comp trunion kit
Fast 92 port matched
Ported LS2 tb
K&N intake
LG 1 3/4, stock ti catback
Mobil 1 0/40
LS7 clutch + Fidanza
ATI 10% pulley
GM 36lb injectors, rebuilt/ flowed
Walbro / Lingenfelter pump
Parts list:
LS2 shortblock
TEA 2.5 243, turned down sodium filled LS3 valves, BTR springs, ti retainers, milled to 64cc
Fel Pro .041 headgasket
static compression 11.5:1
BTR stage 2 cam, 227/234, .614/.576, 113+3 Cloyes hex-adjust timing gears / chain
Melling medium volume oil pump, blueprinted
Johnson short travel lifters
BTR pushrods
Comp trunion kit
Fast 92 port matched
Ported LS2 tb
K&N intake
LG 1 3/4, stock ti catback
Mobil 1 0/40
LS7 clutch + Fidanza
ATI 10% pulley
GM 36lb injectors, rebuilt/ flowed
Walbro / Lingenfelter pump
Last edited by lxcoupe; 03-22-2017 at 08:13 PM.
03-22-2015, 05:40 PM
#7
Yes CA 91 pump. But the tuner did say he could only put 22 degrees of timing in it, I think my low end would be stronger had I used a stock gasket, which might have allowed more timing. Stock .051" gasket would have brought SCR down to 11.09:1 but that's just theorizing at this point. The torque curve looks good but maybe the car needs gears or something I dunno it doesn't feel as strong and flat down low as I thought it would.
I have some old Hoosier R6's that I will air down to 18psi and do a 1/4 mile day just for giggles, I built the car for the road course and I'm worried about the fragile C5 driveline...
I have some old Hoosier R6's that I will air down to 18psi and do a 1/4 mile day just for giggles, I built the car for the road course and I'm worried about the fragile C5 driveline...
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04-12-2015, 06:51 PM
#13
Took the car to Famoso today just for kicks, ran a bunch of 11.60s - 11.70s @ 121-123 mph. 1.90 60ft was my best of the day, not surprised as the only tires I had were dried / worn out/ heat cycled Hooser R6 road race tires that I aired down to 18psi hot. DA was 1500ft. I was getting some pinging at top track, so I bought a 32oz bottle of Torco from the fuel man and pinging went away but it got a lot warmer and I only made 1 pass with the Torco (mixed with half tank of 91). The Torco did raise mph by 1.2 compared to previous pass, even though it was hotter out. So I think with cooler air and Torco or a few gal's of 100 octane in the tank, the car might mph 125, but not much more than that. I still have the stock tstat in the car, so it was running at ~210* all day. I wonder if that's contributing to the pinging? I've never once heard pinging on the street. I was hoping it would mph higher, but on the way home the car felt TONS stronger with the Torco in the tank, literally night and day. The motor has a more aggressive sound at WOT and feels like it has more low end. Either way, I didn't build it to be a 1/4 mile car, so 11.67 @ 123 is acceptable to me, given the tires.
Last edited by lxcoupe; 04-22-2015 at 03:16 AM.
04-18-2015, 10:15 PM
#14
On The Tree
That is bloody great mate!!
I had that same cam in my old car and I loved it. Was a real real surprise of a cam. While mine didn't put down as much as yours with it pulling an average of 374rwhp. It was my heads that didn't let it shine - they flowed 270cfm / 198cfm.
But it was really quick from 3000rpm in my 6 speed and flung around to 7000rpm with great pull the whole way.
I had that same cam in my old car and I loved it. Was a real real surprise of a cam. While mine didn't put down as much as yours with it pulling an average of 374rwhp. It was my heads that didn't let it shine - they flowed 270cfm / 198cfm.
But it was really quick from 3000rpm in my 6 speed and flung around to 7000rpm with great pull the whole way.
04-19-2015, 03:04 AM
#16
That is bloody great mate!! I had that same cam in my old car and I loved it. Was a real real surprise of a cam. While mine didn't put down as much as yours with it pulling an average of 374rwhp. It was my heads that didn't let it shine - they flowed 270cfm / 198cfm. But it was really quick from 3000rpm in my 6 speed and flung around to 7000rpm with great pull the whole way.
I bit the bullet and ordered some 315 Hoosiers this week. I'm heads to Sac Raceway in 3 weeks for mineshaft air to try and go as close to 10.99 as I can.
04-26-2015, 09:16 PM
#18
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Holy numbers! those are great! I have the same cam in a 5.7 with hand ported 243's at 62cc with stock gasket through an m6 and 12 bolt with 4.11 it made 378whp on a dynojet. ran a best of 12.47@114. Hitting it with some nitrous pretty soon though. Have an Idle video of yours?
04-27-2015, 10:04 AM
#19
Been driving the snot out of mine and it feels really strong as well. Based on what it put down before with the ls1 and looking at my MAF readings I think I'm sitting around 425-430rwhp with it unlocked. The torque is up significantly over the old ls1 combo for sure.
04-27-2015, 10:27 AM
#20
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Been driving the snot out of mine and it feels really strong as well. Based on what it put down before with the ls1 and looking at my MAF readings I think I'm sitting around 425-430rwhp with it unlocked. The torque is up significantly over the old ls1 combo for sure.
