Wishmaster's87IROC

iTrader: (4)

ok, I havent been to the track in over 3 years since my 305 so I was a little rusty..and I just wanted to get an idea of what the car has in it.

I still dont have a good tune, Im on the bin from LSRacing cause im running rich down low and have no idea what its doing up top..and I dont have any clue as the the HP/TQ

FUll street trim Iroc 245/50/16 on the fronts at 33lbs and irocs 255/50/16 BFG's on the rear set at 18 psi.

I only made 2 passes my first pass I set the rear tires at 18 hot and backed into the water and just spun a little and came out and did what I thought was a good heating...go to the line and stall it up to I have no idea cause I wasnt paying attention and light turned green and I spun ALL the way past the half 1/8th...LOL....I was like damn!..and ran a 2.293 60" and a 10.60 at 74.5...LOL

ok so the next pass I droped the tires to 16 on the back and didnt back into the water and just did another good tire heating...smoke!!

got up to the light and stalled again still not paying attention to where it was at but it almost pushed thru the lights...GREEN! I nailed it not really all the way to the floor cause I figured it would just light em up again!

and this is what it ran..

reaction .364
I1......1.738
I2......5.007

E.T....7.741
MPH...92.455

I started in 2nd and let the trans shift and then shifted to 3rd at about 5800

now if I can get the 60's down and maybe shift a tad higher...whatcha think it will run? if I can get down in the 1.5-1.6 range? how much does that take off on the big end?

I have vids but I need to get them from the guy.

cp87GTA

On my GA the 60 directly affects the the final ET , and mph. A 10.60 @ 74.5 don't jive, unless your talking 1/8 mile. Dought if you will ever get it hooked up with street tires, even foot braken.

Wishmaster's87IROC

iTrader: (4)

dude if you read the whole post...I went 7.74 at 92.45 on my second pass.
Im not on street tires...Im on BFG drags and I did foot brake it.

fast82z

iTrader: (1)

I see an 11.7x being possible for the 1/4-mile probably 1teens mph. How does that compression work for you; just using pump gas?

Wishmaster's87IROC

iTrader: (4)

I wanna get my 60 footer down in the 1.5's or low 1.6's ...how will that translate on the ET? compared to my 1.7 60' and the 7.7

as far as the compression, I wouldnt know I just fill it with 93 and roll

i did run 100 once and it did seem to run alot better

88IROC350TPI

1.73 60ft = ideally 12.45 in a 1/4
7.74 1/8 = 12.27 in a 1/4
92.45 1/8 = 11.65 in a 1/4

Assuming you can get the 60ft's down you should easily be in the 11.50's at worst. Is that N/A or are you spraying?

Wishmaster's87IROC

iTrader: (4)

thats all motor...with im thinking a not so good tune.

im also thinking maybe a shouldnt stall the car up so high and let the converter take me there once I hit WOT....would that get my 60's down?
i went outside and figured I must have been stalled up to about 2400 or so

87_TA

92 mph suggest you should trap around 115 in the 1/4, I would say 11.7/8s with traction.. But you may pick up a fair amount more with traction, alot of times it stalls converter later getting into powerband faster.

88IROC350TPI

I'd say you are running very well considering how tiny your cam is. Leaving off idle is definitely worth a shot... my car's converter is too tight for motor so leaving off idle it runs faster because it flashes higher than it does off a footbrake. It's probable that you'd 60ft quicker doing that, but you also may increase your chances of spinning.

Orr89RocZ

iTrader: (20)

nice times man, that motor is pretty strong, almost where i expected it to be, not far behind mine!

For what its worth my car goes 7.31 at 93.5 mph on a 1.55 60 foot. Thats 11.47 at 118.5mph

Your car is definately good for 11.60's at 115-116. thats not too bad at all.

have you tried to play with my tune at all in that car?

Wishmaster's87IROC

iTrader: (4)

Yeah it blew me away when I ran that 7.7 after spinnin halfway down the track my first run...LOL

I think there should be more in..(but dont we always wanna think that) I just need to get my 60's down in your range Justin!...then I think i'll be doing about what you do...now also remember Im still not on a good tune and also Im in FULL street trim, no skinnies or anything. How I daily drive is how I rolled to the line except for the tire pressure in the rear...I may not be able to get my 60's down just because of the rear BFG's and not using MT's or anything.

Justin, what RPM do you leave at? and how do you leave? Reason im asking is because our cars are basically the same other than the cam and the CAI and a few other weight-transfer mods.

remember, I couldnt get your tune to startup

Orr89RocZ

iTrader: (20)

oh i was wondering if you got it to start by playing with a few things. We could go back to work on that if you want but your tune so far seems to be working close enough. real tuning will need to be done on the dyno or more track days but i like dyno to see quickly what works and what doesnt

I have 3600 stall, and for the most part i am trying to brake stall alittle, but not whole way up. Maybe 2000 rpms if i can get it there without the car pulling forward thru the brakes. When i'm ready to leave, i quickly throttle into it. Not necessarily full stomp but a quick press down. I tried full stomps and my car simply will not hook up when i try that. best i could get so far is 1.55 60 foot with average around 1.62. Leaving pretty much by 3800-4000 rpms when it flashes up.

But point remains your car is doing well for what it is and what cam you have. Shows you dont always need a big cam to get the job done. But then again your intake lobe isnt all that far off from mine duration wise. Just 4 degrees if i remember right.

Wishmaster's87IROC

iTrader: (4)

ok hers the vids...expand them..its looks alot better! everyone there said they loved the way my car sounded and came up to me asking what kind of exhuast I had.
fist one is me spinning all the way down the track..I dont know why I just didnt let off...i burn alot of my tread doing that!..LOL you can hear me feathering the throttle all the way down......the guy was being sarcastic when he said "hell yeah 10.6"...LMAO

Second is my 1.7 sixty and 7.7 run..you can see how I almost went thru the lights stallin it up...you can see how the car just took the hell off!...squatted and went!..full street trim. that 4th gen was a bolt -on LT1



fist pass


7.7 pass

Orr89RocZ

iTrader: (20)

does sound pretty good nice 7.7 run

1989GTATransAm

iTrader: (3)

On that first run it looks like your tires are smoking half way down the track. Nice and will only get better.

Wishmaster's87IROC

iTrader: (4)

yeah they were spinning most of the way down...i should have just left off.

I need to practice leaving and i hope I can get my sixties down and then see what it really runs.
but I know im rich down low...cause you can smell the gas while its idling....I dont know if that matters on WOT..but being on a mail tune...it cant be dead nuts!...
There has to be more on the table.

Orr89RocZ

iTrader: (20)

there is man, my mail order plus my street air fuel gauge tuning. ran 11.6's at 116. dyno tuned went 11.47 at 118.5, and hit 119.1 the week before in similar air with same 60 foots.

that mail order out the box was over 16 to 1 wot and the timing was way high at WOT. i added a buttload of fuel to get it right

Wishmaster's87IROC

iTrader: (4)

yeah but the question is how much? Im thinkin maybe 30-40 or so. See Im just mail order....no tuning whatsoever. wouldnt that be something if i was running your times!? i only wish.....

i could be right now...if i was to run the same 60's as you that would drop me to about 7.3ish4 im just 1.5 mph off your 1/8 ET but then on the big end i wanna be 11.4ish too.

the closest 1/4 mile track is the new Zmax dragstrip in charlotte and i dont think they have started any TT's

Justin, can you post up your full best run so i can compare?


oh and by the way, I know what you mean about the car not feeling that strong on the street...I never would have thought that..I was thinking mid 8..LOL..but everyone that rides with me says it feels fast...i guess cause i got the steering wheel in my hand.