There were 4-5 TBSSs at Infineon yesterday, but none wearing drag radials so I guessing that you didn't make it out?

There was a pretty good crowd of cars yesterday, and I was only able to get 3 runs in.

First run I was in the right lane and gave a really skimp burnout which produced NO traction out 250-300 ft...it was both frustrating and fun, as I never have really gotten into it without jumping right back out. This time I just back off the pedal til it caught then stabbed it again. Results were as expected, a crappy time of 14.52 @ 100.58.

Second run I gave it a pretty good burnout then was a little hesitant to give it much pedal off the line thinking it would break loose...I was pleasantly surprised in that held as I gave it more. So it was a bit of a soft start with a 1.94 60' but I had a better idea of how much pedal I could throw at it. Results were markedly better at 12.82 @ 103.46.

Last run was in the 1st round of eliminations, which I was not wanting yet since I had not even experimented with stalling it up yet--but I dialed in at 12.70 and hoped for the best. I did about the same burnout then staged. As I was stalling it up the front brakes slipped and I bumped forward, which made me drop my gas pedal and stab down on the brake...but it was too late and I ended up red lighting! Ended up with a 13.12 @ 103.91 and a 2.87 60'.

All this with Rick's tune and the new 3.42 geared 14-bolt. Next upgrade: swap out JBA shorties & Magnaflow catted y-pipe for new Dynatech LTs & catted y-pipe, tweak the tune and back to the track. I'm not expecting BIG gains but want to do it so everyone can see the results.

 

yah I should get the truck back today i hope. We will all be out there the 29th and did you see the 12.3 tbss. Intake/Tune and 50 shot ran 12.3@108.

Seeing what your times are i really think it would be a good match up.

I ran almost 104 but only a 13.3. Now with the stall it should trap about the same mph but high 12s. You have 2 weeks to get your mods on so get er done so we can race lol

your truck with some 4.10 gears sticky short tires (26 inches tall) im sure would be in low 12s. I think your running what a 29 or 30 inch tall tire?

 

Yeah, the 275/45R20s are 29.75". I have a set of M&H 275/50R17 drag radials on MT ET wheels that I'm ready to give a try.

The LTs are being installed tomorrow...then I just need to make it to Fremont to tweak the tune, and adjust the shifting a bit.

I didn't get to do much watching as we were all in the first 4 lanes which moved pretty fast once they called us up.

 

yah with 3.42 gears and 29.75 your barly into 3rd going thru the traps not in the power range at all. they 275 50 17 will help also but if your really looking to get the best out of it id step up to at least a 3.90 or 4.10.

with your 3.42 and the 275 50 17 if im correct going thru the traps in 3rd at 105 mph your like 4400 rpms which is nothing at all.

Ill see you up there the 29th and if i get my 8 rib on ill be taking my tvs2300 tbss up there see what she does.

 

What are your iat at 8lbs with your current setup? Do you have any cooling mods..canton...bigger heat exchanger...meth?

 

no i have the tvs2300 set at 11.5 psi. the 6 rib belt was getting torn up bad so thats with a 3.0 pulley. Im waiting for my 8 rib to come in and its a 10 percent overdrive on the crank so dropping it to a 3.2 pulley should keep me i hope at 10 psi boost which is fine for now. I will be doing a 2.8 later and keeping 15 psi on the 2300.


i have a canton tank and the trailblazer ss kit has the biggest heat exchanger they have. im at 15 above ambient cruzing around and doing 3 back to back runs my iats most is 115 degrees and drops back to 15 degrees above ambient in less than a minute.

RPM motorsports did 3 back to back runs on the dyno and they got 105 iats most wiht the tvs 1900 set at 5.5 psi. The tvs is just so much more efficent than the 112 i had on there before

 

I intended to examine the RPM at teh traps but repeatedly got caught up watching the MPH instead...apparently my speedo is not calibrated well as it was showing 108-110 mph and the timeslips were showing 103-104. Gears is in the plans. I have the 4.10 gears/install kit in the garage, and picking up a TrueTrac here soon.

In the event that you were asking about mine, I was told that the IAT was 150-160* at the end of a dyno pull. Currently I have the original reservoir and OLD original Radix HE, which I'm guessing is maybe 22"W x 9"H x 1"D? I just bought a CTVS HE and plan to upgrade the reservoir as well.

 

3.42 gears with 275 45 20
105 mph is 4058 rpms

4.10 gears with 275 45 20
105 mph is 4850 rpms

Best combo for you by far
4.10 gears with 275 50 17
105 mph is 5200 rpms

What is your redline anyway 6000?

 

Goatchs..... I was told depending on what I want to do to do one or the other.... Racing I was told a larger reservoir and for the road I was told a bigger heat exchanger. If both the heat exchanger is having to do more work to cool off more water.... but larger canton can be packed with ice but will heat up faster with more contact to ambient air with a larger heat exchanger. At what point is iat to high?

Trying to learn from you.... keep me updated with any changes.

 

Its shifting at 5800 which is currently a good match with the power curve...power has already peaked so why push higher? With future changes that may have to be raised.

A 28" DR is what I will be using with both the current 3.42 gears and the 4.10 when they are installed. I'm already looking at getting the new 295/45R17 MT ET Street DR II tires when these M&Hs are done. That would be good for 110 mph @ 5500, which is close to the trap I would expect to be hitting with the future improvements (110-113 mph).

Well, I suppose that makes some sense, if it operated on the same concept as the cooling system for the engine (think about the effect that removing the thermostat has on the effectiveness of the system). However, the SC system does not have a thermostat and since the coolant pump on the SC system still circulates the same volume but the system coolant capacity has been increased with the larger HE & reservoir, it would take longer to bring overall coolant temps up, and the temps would fall faster due to the larger HE. So, I'm thinking it can only be more efficient, with no decreases OTHER THAN having more of the radiator blocked from receiving direct airflow--since the CTS-V HE basically covers the front of the radiator.