mchicia1

iTrader: (5)

420-440 as others have stated. No one is hitting 500 rwhp with an ls6 intake on the car and 1 3/4" headers on stock displacement.

Calculators are dumb...there is a lot more to trap speed than just peak horsepower. Gear ratios (tire size as well), average horsepower, torque curve, etc.

You have a very stout car though, 130 mph in the 1/4 is no joke.

RaVagE

Or you could get the car dynoed, and problem/mystery solved.

BrianC98Z28

iTrader: (11)

or go pay $30 for 3 pulls and be done with it. Case closed, who gives a **** about dyno #s and what some dumbass calculator says on the internet.

mattster03

iTrader: (22)

that's funny because 99% of the time people are saying, "who cares what a dumbass dyno says, get your car to the track". I will get it on the dyno and it will most likely read 450+/-10rwhp... I was mistakingly following a bad calculator that has proved very accurate for me in the past. 130mph does seem abnormally fast, so I had to ask the question.

jetaws6

iTrader: (3)

I dont think 130 is fast for your light car. Theres plenty of heads and cam fbodys trapping in the 120 area

mike c.

iTrader: (1)

I trap 130mph on a 26'' tire. i'm at 530hp and the car with me is 3,670lbs.

baezi z06

iTrader: (2)

This one is good

here you can see both RWHP and Engine hp

based on ET time and ET trap

http://vexer.com/automotive-tools/1-...MPH-calculator

but et trap is more accurate unless you have 100% run

Baezi

mattster03

iTrader: (22)

there's also a pretty big difference b/t 120 and 130

mattster03

iTrader: (22)

just curious how deep into the 10's are you and what's your 60'?

jetaws6

iTrader: (3)

There's also a big difference between 1000lbs

mattster03

iTrader: (22)

Your typical drag racing Fbody weighs almost 3,900lbs? That's news to me.

jetaws6

iTrader: (3)

3700 with driver is close enough

mattster03

iTrader: (22)

haha alright... ask someone who just went through the work to drop 200-300 lbs off a car if that much weight isn't worth taking into account . needless to say i'm pretty happy with the power the car making... whatever it might be. I was really just looking for an explanation as to why a calculator that I have found to be right on in the past is spitting out an unbelievable number... I guess there's just too many factors, but I do agree that the wallace racing one seems much closer to reality.

jetaws6

iTrader: (3)

Like it was said before I think it was a flywheel number. Your car is definitely in the 450 range though and is trapping a 10 second mph

mattster03

iTrader: (22)

From the calculator I linked in my 3rd post:

"Input the Weight and 1/4 mile Trap speed of your vehicle. Our Calculator will generate its rear wheel horsepower".

The wallace one is much better I have come to find, so I will be using it from here on out.

I am definitely working on my 60' times... they are the only thing holding me back right now. I need about 0.150sec to get my 10 second slip... I just bought a set of ET Streets and some skinnies to try and get there in a few weeks.

mike c.

iTrader: (1)

10.63@130.08 1.55 60 foot. I normally get lower 1.4 60's but my slicks are four yrs old and shot. I hope this year with a new set and this ported mammo intake vs my unported 102 i can get a 10.49 or something.

Damian

iTrader: (89)

OP, do you have a video of your pass? If so, post it. I'd like to hear your driving skills before making an assumption.

One key fact a lot of people tend to forget when arguing MPH is how fast you shift. I've jumped in peoples' car before that was going slower than it should, and picked up 4-5mph based on better driving/shifting alone. I'm also typically bigger than most of those people (235lbs) so I added weight at the same time.

I'm not saying this is the case with the OP's car, but it is something to think about. A car capable of 135+ traps can be brought down significantly lower with 4 slow shifts.

71 chevy

iTrader: (18)

the calculator is correct for flywheel hp. they mislabeled it as rwhp

silverz28camaro

iTrader: (20)

My car dyno's 451 rwhp and traps 127mph in about 1000 da. weight is 3200lbs in a camaro.

I would think that with yours being about 300lbs lighter and maybe slightly more areodynamic 130mph would be expected with 450rwhp....ish

But also mine is a 4l60e car with a 3600 unlocked converter and you are 6 speed...

I think I did those online hp/1/4 calculators and they say my car should be 550 rwhp or something...

Either way your car runs killer strong and is deadly from a roll. to bad my dodge ram isn't that way

silverz28camaro

iTrader: (20)

are you 6 speed or auto?