mw66nova

iTrader: (13)

went out to silver dollar again today for some testing. i put a new tire on the car and wanted to figure out what it was gonna want for tire pressure and launch rpms, etc. seemed to really like a 2800rpm launch speed when foot braking, went a 12.41 @ 108mph on a 1.65 60'. i wanted to try one launch off the transbrake, so i let it ride at 4100rpms on the floor the very last pass i made. went 1.64 60', 12.39@107.08mph. my little bro came back to the pits all extatic that the car picked the tires up 6-8". i didn't believe him so i talked to a couple of buddies and they all agreed. i wished i had a pic of the launch, but i don't...

here's a pic of the car in the pits with the new 29x9 hooser slicks on it.

SebasIroc

iTrader: (1)

nice time you got there...up here we got another snow storm....more then 1' of white sh...we got over 10' this year so I wont see any track time before end april-may.

you almost beat my best....you give me hope I can see 11 with my little 350

Seb

Stevo

iTrader: (45)

wow, grats man! Thats impressive. What was different from the past weeks? The electric water pump and different meats on the rears?

mw66nova

iTrader: (13)

that's it! water pump drive and the new meats. i have to figure out the DA so i can compare last week to this week a bit better, but the air last week was better from what i remember. i also put in another 2* initial, which brought my total intial timing up to 23* and total timing of 39*.

xpndbl3

iTrader: (5)

see...slicks ARE faster So you went with a 29x9 or a 28x9 tire?

Guest

Nice times. Pretty soon that thing will be running 11's.

F-BIRD'88

You got to cut this out !!! You're going to bum out all the guys who spent big bucks on aftermarket cylinder heads, stroker motors and roller cams etc.
Try locking out the timing so that you have lots and lots of initial, yet don't over advance it in then traps. 39deg indicates slowed combustion burn speed (or inaccurate timing marks) ,possibly needs more jet.
What do you think caused the ET/MPH reduction/gain the most, the slicks or the electric water pump? What was your new rpm thru the traps?
How did your new 1/8th mile et and MPH compare to before?

With the tall Hoosier slicks you should be all set for the juice.
They tend to grow more in the traps the faster you go.

I'm going to need to get something tall(er) for my car with the 406+N2O.
Did you have to do anything to the wheel wells/quarter panel lip to fit the 29" tall slicks?

DIGGLER

iTrader: (1)

nice times, but why such a tall tire?

F-BIRD'88

tall 9x29's when set at around 10psi so they squat down tend to give a strong sling shot effect out the hole. The more the tire tread squats and wrinkle walls on launch, the longer the tread foot print and effective gear ratio at the starting line (better traction). Then at the top end they tend to grow in diameter helping the top end charge (MPH). Sort of like a variable gear ratio. Radials don't do this quite as much as real racing slicks do.
Just don't get carried away with low tire pressure or the top end gets unstable.
Tubes and wheel rim beed screws are recomended if you run low tire pressure.

DIGGLER

iTrader: (1)

i think the car would be faster on a set of 26's. but im guessing he wanted the car to make it through the 1/4 when on the nitrous.... and didnt want to change the gear in the rearend?

mw66nova

iTrader: (13)

i've got rim screws in the there, but i'm running 18lbs. didn't have a problem with hooking.

i need to lock out the timing, that's something i've been meaning to do, just haven't gotten to it.

1/8 mile previous best was a 7.94 @ 85mph, my new best is a 7.82 @ 86.6ishmph

i think that the water pump and the tires did me about the same amount of reduction. new trap rpms are right at 6250rpms.

fitment was not a big issue. i had already rolled the fenderlip and beat the inner fender in to clear an old tire combo. it's got PLENTY of clearance
----------
diggler, my car was running 6500rpms through the traps on a 28" tall tire, which is too much. the car has 4.56's in it, i needed a tire that was gonna lower my trap rpms, not raise them, lol! i think it's obvious that the car is working right.

ssean92

iTrader: (10)

congrats on the new time Bro......

Orr89RocZ

iTrader: (20)

wow man, thats impressive!!!! that car sure is coming along! Faster and faster each time.

not too far off 11's man, that be awesome to see that car go 11's!!

ZONES89RS

iTrader: (2)

Damn, how much faster you think it would be with 50 rextra cubes? 11.8x maybe?

F-BIRD'88

Based on your 1/8mile times and mph there is still more in the car.
12.30's@109 possible
Possible front end alignment needed. Possible too much timing in the traps (high speed spark retard) or not enough jet. You're right at the point in the traps where a hyd cam craps out. (RPM) may have to adjust the valvetrain so the hyd lifter plunger is at the very top or very near the bottom to get the last few rpms out of her.
A 7500 rpm capable valvetrain and 5.38's or 5.57's would put it in the 11's.

EvilCartman

iTrader: (1)

Ok that's it, I want a transbrake in my car now Congrats on the times man

DIGGLER

iTrader: (1)

didnt wanna change gears? either way will work i know, but i'd rather not lug the bigger tires down the track if i dont have to.

what are your plans nitrous-wise? how big a shot?

mw66nova

iTrader: (13)

i'm piecing together a kit. gonna run some nitrous works solenoids and run a zex perimeter plate. gonna put some 125pills in it at first i think. i don't wanna go too big yet, i still got playin' to do. i'm probably not gonna have all the n2o stuff ready to go till next season. i'm putting a forged piston in this motor to make sure things are gonna be ok too.

i did not wanna change rear gears, lol! i needed new tires anyhow, but seriously, these things are 11lbs lighter EACH than the old 275/60/15 drag radials. you should feel just how light this wheel/tire combo is. it's right at 34lbs total.

funina91ss

Good times. Are you still running the TBI? I sprayed (150)mine to a 7.88 in the 8th and a 12.49 (ran out of gear) Stock TB, motor, heads and a compu cam.

zz17iroc

iTrader: (4)

That's what I'm talking about Matt. I wanted to go real bad sat, but soldiers came first. Keep it up man

maro_of_the_92

car looks good man, nice time.

1QWIKZ

Congrats! Car is definitely working!

mw66nova

iTrader: (13)

this car has never been TBI. it was originally a 3.1 car. i'm not sure why people keep asking me this cause i've never eluded to the idea that it ever once was a tbi car, oh well. the car has a 650 double pumper on it.

craig, thanks brother! you wanna come out this saturday for some bracket racing? it would be fun!!!

funina91ss

I think just saying it has a 305 in it and most 305 (RS) were TBI atleast that is why I thought it might of had one. But none the less it still runs very strong.

mw66nova

iTrader: (13)

i gotcha. but you'll not find one single 305 anywhere close to what i'm running with a stock tbi unit on it, lol! Fast355 does some pretty incredible stuff with the tbi, but i don't think even his high hp 305 is running tbi anymore.

funina91ss

Mine does with the help of some N20

mw66nova

iTrader: (13)

here's a very crappy quality video and a very crappy quality screen capture from the video of my totin' the front left tire. this was a foot brake launch so it wasn't the "violent" 8" tire totin' that i was talking about off the transbrake



http://s86.photobucket.com/albums/k1...t=SD531685.flv

Orr89RocZ

iTrader: (20)

sick man! thats awesome!! 305 liftin the wheels??? are u serious? who actually believes you its a 305?

xpndbl3

iTrader: (5)

TONS of 305s have pulled the wheels. My old one was going 11.60 at the track on a little spray, and the stock class guys are rocking 18" of air easily, and that's with less than .45X lift. Although matt is doing surprisingly well for such a small budget, just think if he actually had a 350 what he could have done instead of dumping coin into that 305 over and over

tommyboy

[QUOTE=mw66nova;3678026]here's a very crappy quality video and a very crappy quality screen capture from the video of my totin' the front left tire. this was a foot brake launch so it wasn't the "violent" 8" tire totin' that i was talking about off the transbrake

Deja Vu.....

Fast355

iTrader: (2)

The Camaro is still TBI and still daily driven. Still runs just as hard, if not harder than it did when it turned the old times out. The Van has a mild TPI 305 now though.