brians91formula

iTrader: (12)

This question might seem stupid to some, but I'm really curious.

What does the average Heads,Cam,Intake LS1 run with a proper setup and no serious weight reduction ?

I have seen Cam only full weight cars trap 119mph in the 1/4 and I have seen H/C/I full weight cars only trap 113mph.

So what does the average properly setup LS1 Fbody run with a decent H/C/I combo run at sea level ?

Nitroused383

iTrader: (10)

I'd say average full weight sea level H/C/I car with supporting mods should be 120 mph +. If you have decent rear end, clutch, torque converter, tires and what not 120-126 mph is attainable depending on heads / cam. My car for example is pretty mild / budget, 3700lb raceweight 224 cam with unported 243 heads, yet in the middle of summer @ 2400' elevation (3900' DA) has ran around 117-118 mph. If I ran at sea level on a cool day I'd expect around 122-124 mph. I don't see why a larger cam setup with a quality CNC'd head would not run even harder.

brians91formula

iTrader: (12)

Thanks Nitroused383. Thats the kind of information I was looking for.

I'm right at sea level, and I hope to break 120+ mph traps with the following...

227/233 custom cam
Ported LS6 243 heads
LS6 intake

plus supporting mods.

Right now im at 402/378 cam only so I think its doable.

N2RACINGLS1's

iTrader: (2)

Well I am not sure if my Formula is average but it usually traps between 123 and 126 on NA runs at 3,300 lbs.

The low MPH number would be 2,000 DA and higher and the high MPH number would be 1,700 DA and less. I do not get to race at sea level!

N2

brians91formula

iTrader: (12)

new setup is about to go on.


227/233 custom cam
Trick flow TFS 215 heads
Fast 92mm intake ported to match the heads w/ 92mm throttle body
FTP 98mm Lid, Z06 85mm MAF
Chris1313 ram air


If I don't trap in the 120 -124 mph range i'm going to be pissed. I don't care about ET right now because i'm still on a 10 bolt rear.

MWC 9" should come this fall.



p.s. My track is at sea level.

Pro Stock John

iTrader: (34)

I'd be interested in hearing more examples too, I'm mainly interested in the trap speeds.

S.O.MWS6

iTrader: (4)

with Ported 5.3's, fast 92/92 combo, a torquer v2.. (420/392 on dyno dynamics dyno) and 4.11 gears at 2600 feet (4300DA) i trapped 117.8 with a crappy 60' lol...

car weighs 3750 w/ me in it....

in denver, same setup...i ran 112mph with 5900feet 7600DA...

nmass399

What does your car trap now and et.

NC98Z

iTrader: (1)

The track I run at is about 100ft above sea level according to my GPS. I normally trap 119-120 mph in the 1/4 but I've been hitting high gear before the 1/4 mile line. I just changed to 28" tires. I should lose a little in the 1/8 but I should pickup in the 1/4. Suppose to run Saturday. I'll let you know the difference. My car is full factory weight and I weigh over 300#s.

c0ncEpT

iTrader: (4)

I would expect the AVERAGE H/C/I car to trap at least 120/124 with an auto/6 speed @ 3600lbs.

brians91formula

iTrader: (12)

with my current horsepower numbers in sig I trap anywhere from 117-115 mph. The ET is not worth mentioning. lol

SweeTbone

iTrader: (8)

I ran a 12.15 @ 119.1 MPH with a 2.0 60' on the POS 10 bolt. Not wanting to grenade it I left soft and it pretty much bogged. Stellar trap speed with a crap ET. I ran at full weight (Not sure of exact #) except no spare tire and jack. Still have washer fluid in it. The MWC 9" that's arriving soon should remedy the ET. Unsure of what the DA was either.

1990LSx

iTrader: (9)

At sea level it should do 120-124mph in good weather. DA can kills some mph for sure.

Nitroused383

iTrader: (10)

I installed an altitude compensation device to remedy my high density altitude issues

shortdog

iTrader: (1)

Though, it has been done, I won't consider that "average" for a full weight H/C/I AUTOMATIC to trap 120.

c0ncEpT

iTrader: (4)

There are a few automatic cars around here that trap 120 with stock casting heads and LS6 intakes. All of them weight 3500+.

I would expect aftermarket castings and fast set ups to trap 122+

To me thats average.

shortdog

iTrader: (1)

If "FULL WEIGHT" (not 3500, or weight reduction) stock ci H/C/I A4 cars "AVERAGING" 122+ mph in your area, then maybe I need to move up to MI for that awesome DA, or change my setup. That's a high 10 second pass, lol.

demarco313

You should EASILY trap in the 120s! You trap 117 now and your new setup looks much better than your old setup...At sea level with those new mods you listed and being an m6 you should see AT LEAST 122/123

Thats average for the "ppl you know." Thats definitely not the average trap speed for ALL of the ls1 crowd especially with a automatic and ls6 intake at full weight. Is it possible yes, is it average no.

There are alot of aftermarket heads and cam combos with Fast intakes that dont even trap 120 being manuals at that. Some do some dont, but for an auto its thats much more harder to achieve that 120 trap especially with a automatic with an ls6 intake at full weight.

lemons12

iTrader: (71)

Custom cam
AFR heads or the like
Fast Intake
Full bolt ons
Proper gears/tire size/converter
Etc..

A4 or m6 should be high tens bottom elevens..120-125.

JaSSon

iTrader: (11)

127 to 128 for my ol'e heap. Raceweight 3200#s.