camz383

12.98!!! yep, thats what I get for spending $3k on the car and cant even get a lower time than last year... I'm really dissapointed in the car right now, who knows maybe its the driver...

Last year I ran a 12.50 constantly on motor babying it off the line at 2500rpm and then getting on it.

I really need to get it on datamaster or something but I have problems with my laptop connection

My new mods are:
Dennys nitrous ready DS
Moser 12 bolt, same gears as before 4.11s
Holley 58mm TB
Racetronix 42# injectors-- could these be too big or something?
Madz28.com tune

This is what my best run looked like today.
Reaction-- .764
60ft-- 2.001
330ft--5.580
1/8 et--8.449
1/8 mph-- 86.76
1000' et-- 10.912
1/4 et-- 12.970
1/4 mph-- 110.08

I ran today about 7 times and this was the freakin best I could do. It was about 94* today out and real sunny so im sure that had a little to do with it.

I went out looking to run a high 11 on motor and a mid-high 10 on nitrous, but left really dissapointed...

Last year I would run a 12.5x@115mph all the time on motor, but I lost 5mph and 5 tenths...

I think a lot of it has to do with the launch, I am used to taking it to 2500 then feathering it off the line. Well I figured that today I could launch at 4k and drop the clutch... First few runs I had the front QA1's set on 3 and rear on 6 and It bogged really bad, the front end would come up so much and then just bog down and lose all rpms.

In between all different runs, I set the qa1s at 4 on front and launched at 4500 and i blew the tires off basically. Then I tried back down at 3 and launched at 4500 and it bogged... then the final run I set them on 3 and launched it at 5k and the damn thing blew the tires apart again.

There were guys there asking me what was wrong because they remembered my car from last year running 11s... lol i felt like an ***

Once I get above 6k rpms it feels like the car starts to fall on its face... what could fix this?

Thanks for reading through all this if you did, any help would be GREAT!

camz383

I'm thinking I need to get lca relocation brackets, new lca's, and a drag race rear sway bar... any suggestions?

Vendetta

Wait, this is with the car in your sig? If so, something is DEFINITELY not right there.. 517rwhp does not = 110mph...

camz383

oh no sorry, that is 517 on nitrous, i didnt use nitrous today, only motor

Vendetta

Ah okay, I see... what heads/cam are on your motor?

Vendetta

Nevermind I checked your page, I still think youmight be losing power somewhere, the trap should be higher with the cam and ported stock heads. Either way, once you figure that out I would definitely work the hell out of the suspension and run slicks on that 12-bolt.

camz383

yea i dont know what is going on, I am gettin an Lloyd elliot h&c package this winter. Dont want the down time right now...

I'm going to get the mt et street radials once these bfg's go bald

OldSchoolSS

The 12 bolt sucks a lot more power than the factory 10 bolt plus it adds more weight. You're lucky you're not going slower. The TB won't do much for you at your mod level. The tune is a mail order tune so ymmv.

FIREHAWK #07

iTrader: (1)

also you have to take into consideration that it is pretty FU&*N' HOT!!!! Me and my friends are all off our usual times by at least .3 to .5 tenths off!!! Wait till it cools down some, or wait for a good day to go out there and Im sure youll run much better....

HBHRacing

guys come on.. The 12 bolt and DS isn't eating up THAT much power. Maybe .2-.3. And altho I agree that he could make the same amount of power on a 52MM TB the 58 isn't really going to "hurt" him. And altho I do agree that a duno tune would be good thats not really the problem either. The problem is his launch.

this run. 2.0 60 and a 12.9

old runs 1.7 60 and a 12.5

Do the math. Use the basic "formula" that every .1 from his 60 will net him .15 off his ET and you get this. This run with a 1.7 60 would have made him .45 faster and ran a 12.52 or if you figure it as a 1-1 ratio a 12.67. Neither of which would be bad considering the new amounts of loss from the rear and DS. You also have to remember that it's summer. I'm not sure if his old runs were in this heat but if not that will be a factor as well.

You have to compare apples to apples. comparing a 2.0 60 foot to a 1.7 60 foot is like comparing apples to brussle sprouts.

camz383

I found one of my old time slips from a mid 12 run...
this is not one of my better 60' times but it was alright...
Here is so you can compare to the other
OLD
60'-- 1.85
330'-- 5.29
1/8 et-- 8.10
1/8 mph-- 87.70
1000' et-- 10.52
1/4 et-- 12.55
1/4 mph-- 111.40

Reaction-- .764
60ft-- 2.001
330ft--5.580
1/8 et--8.449
1/8 mph-- 86.76
1000' et-- 10.912
1/4 et-- 12.970
1/4 mph-- 110.08

buffman

iTrader: (9)

like mentioned you're running in the heat. What was the DA when you made that run?
Matt

HBHRacing

yup, heat and traction is all there is to it. Solve both of these problems and I am willing to bet that even with teh loss of the 12 bolt and DS you break 12.5's with your setup.

z28boysteve

iTrader: (9)

yikes for your ET that 60' is horrible... you spinning or bogging?

travie319

iTrader: (1)

those injectors are huge for a N/A tune unless you're running a dry system....?......

camz383

z28boy- i am doing both, spinning half the time and bogging the other half lol

travie- why do you think they are too large, i went through the calculations and came to the point of my car has around 420 hp n/a at the flywheel so basically that calls for a ~34# injector, and I am doing a h/c package this winter so i decided to go and get the 42#ers I am running a wet nitrous system...

harlan- i agree with that, heat and traction is a big factor, what do you think about the size of my injectors?

buffman- it was 660' above sea level

HBHRacing

A lot of people like larger then needed injectors. Reason being they can suply the same amount of fuel as a smaller injector without needing such a high duty cycle. It's actualy better for the injector life for that reason. As long as the tune is good your going to be pretty fair. But again, knowing what your A/F ration at WOT is would be really helpful to see if your tune is on.

RealQuick

iTrader: (14)

You said befoe that you traped 115, yet yo gave us a 12.5@111 versus the new 12.9 @ 110. The difference between those two is the 60', plus the waether, plus the extra weight hp robbing of the rearend. If you only lost 1mph like you just posted, then there isnt a problem....

camz383

yea that wasnt the best mid 12 run i had, i have ran it at 115 a few times. that was the closest one i have had on hand, the others are scattered somewhere...

93turboLT1

Just think...now you are ready for your new H/C setup. You have your 58mm and the rear end. I would be happy to own a 12 bolt on a stock LT1 running 14's, just to know that it will handle anything I throw at it down the road.