Well you seem as if youre going off of trap speeds, and to you, since a V10 R8 traps 120mph, and I trap 116, I wont win, but a V8 R8 traps 109, and you think its modified (which I agree) would trap around 115. When I put a gear in my car I should trap 120mph if not more. So using your logic, I should be able to hang/beat a V10, if I trap the same mph or higher, but then you question that a gear (which is probably the cheapest and one of the most effective mods) will help me win a race that I lost by a car in?

the vid wasnt up yet when he posted that comment. And did YOU watch the vid? In what world is ONE car length considered getting smoked?

 

I don't think that a gear will help you as much in a high roll race as you think, nor raise your trap speed by several mph...that's all.

You claimed that a gear will help you beat V10 R8s "pretty good", when you have yet to show that you can even beat a slightly modified V8 R8 or hang with a stock V10.

 

then lets look at it this way.. 12.5 @116 on streets... with slicks i should be around 11.9 lets say, then with a gear, going from 3.23s to 3.90s, i should be around 11.5 more or less, and I would think my mph would be around 120...

 

You have a hard time following that trap speed matters in a roll race among many other variables over e.t.?

 

N2O kit and you will walk him ...

 

What kind of street tires was you on. I consider my MT DR's street tires. They are DOT approved. Others I know run around on Nitto 5555R's. And claim what they street tires.

I can see .5 with slicks. Not much more.

But your not going to gain .5 with gears. maybe at best .2-.3..Now go to a 4.30 gear and you might see that .5.

 

holy ****, there is so may " i am gonna" "I should be" "i will" going on in this thread.

your car makes 430rwhp yet you only trap 116? something fishy right there. High reading dyno? I think so. 116 is traps for a 390-400rwhp full weight f-body usually.

as far as the gear goes, its going to HURT you on highway pulls...

with my stock 10 bolt with 3.42's on a street tire, my car consistently trapped 116 at the track (with much less power then you).

I put in 4.10's and the car trapped 115. Nothing else changed from the last time, other then the gear swap.

I put in my moser 12 bolt with 4.11's and went back on a 26" MT drag radial. Car does 115.xx consistently with NO traction issues. This is with 400rwhp, ms3 cam only. All motor of course.

now, for a little over view of before with the 3.42's vs the 4.10's.

when I had my 3.42's, my buddy went and picked up a 08 c6. His was a 6spd as well. We lined them up for some 30mph rolls, until about 140 and I would put roughly 2 cars on him.

a few days later, I had my 4.10's installed. Thinking my car would be faster now, we lined them up again. Same exact runs. Instead of me steadily walking away like last time, he edged me out by half a car every single time.

moral of the story...for highway pulls like with that r8, your going to be slower then you are now.

 

Sounds like maybe shifting slowed the car down. I have seen and personally picked up mph going from 342 to 410s. Track and highway both.

I got a solid 3 mph out of them in a 400whp car.

 

I am not sure what happened. My shifting is fine however.

http://www.youtube.com/watch?v=H_uakfA97cU

 

high reading dyno? ok, well tell me what you THINK i should be making with all the parts i have installed... those runs were from the previous owner as well..

and i dont seem to understand, a gear in my mind would mean much quicker acceleration, and no drop in top end other than the fact that the top speed is much lower. But I cant see a gear making roll races any worse unless were doing 160mph+, it just doesnt make sense to me... gear makes it easier for more hp/tq to the ground, and its not like just cause its a higher gear it stops producing power at higher mph than my 3.23s would.

And the only thing that I would explain the 1mph slower trap is that your 60ft was probably better than it was with the 3.42s. and doesnt that usually make for slower trap?

and ohio, theyre just 275 normal *** street tires, 2.2 60ft with them, not sure what tires they are though, and its 2am so im not going outside to look haha.

 

?? beats me. nothing bad about your shifting, i'd really expect an ms3 car to benefit from gears like that given its powerband.

no matter your outcome, i think it would be in his favor to get those gears. i've seen a lot more positive results...actually i think you're the first i've seen post negative results. i can see how maybe 140-160 they'd be a tick slower than 342s, but everywhere else they should pull.

OP: i think 390s and slicks would put your car capable of mid 11s, but the question is can you drive it there? what are the other specs on the cam? dur lsa? i'd think 437whp is about right, but i agree that 116 is slow for the power. adding slicks may even slow the car down a bit, just have to see.

 

honestly man, if I had a reason why my car became slower going from 3.42's to 4.11's I would tell ya. I am pretty much just a clueless as you. I thought it would benefit me as well, which is why I did it. The only thing I can come up with, is the way I drove my car with the 3.42's and the 4.11's.

with the 3.42's I would drive the ***** off the thing. My rev limiter is 7200rpms. I would shift at 6900-7k.

for example, if I was doing a 50 roll with someone, I would be in first gear. If I even so much as had 800rpms before I needed to shift, I would be in that gear. Maybe doing this helped me benefit from my power band more? I am not sure. I do the same thing with my 4.11's, they just dont have the "jump" in that high of the power band as the 3.42's.

the car definitely launches better. No doubt about that.

even with drag radials my car still trapped the same on motor vs street tires.

 

Yeah my buddies Camaro picked up 3mph from 4.10s as well. Those will be my next 'big' mod.

 

beats me. sucks you did the swap and lost ground.

i am planning on making the swap soon in this car. i am worried about how the car will backhalf, though. it seems abnormally strong in its current state and i really don't want to upset anything. i do know that swapping gears will make it exponentially more fun to drive, and at this point the car might see the track once a year. this one is very stock and i try not to race anything as a result haha.

just to make the op feel bad, this car trapped 111 with a lid and weld in flowmaster 80 series with a da of 2250'. it consistently picks up 25-26 mph on the back half. 99 car with stock everything, baffles me. i shift between 56-5700. it would pull my 111 mph header stall a4 car all day

 

What video were you watching?