89IrocZ350TPI

Once I get my 1.6 rocker arms and slicks get ready TGO!

Orr89RocZ

iTrader: (20)

your running almost identical to what i was! You can get 12.9's, just need to launch like crazy and have good air! Ice that plenum down, its worth just about a tenth

89IrocZ350TPI

Yeah man. Thats all I want to do is hit high 12's. I ordered some 1.6 rocker arms. I was thinking if I get around 10-15 horses out of those it may be possible. Right now im kickin out around 250 rwh so about 310 motor. My torque numbers looked a bit high. It was hitting between 340-350 at the wheels. Kinda crazy cuz thats around 400 at the motor. Switched back and forth between the hypertech and TPIS chip and didnt notice a damn difference. HT actually made slightly better power. Strange. If I cannot hit 12's with the rockers alone im going to finally order the edge 2800 stall converter and some march pulleys. Then its on! lolz

87_GTA_5.7

stock l98, shorty headers, 3:70s, 75 shot of nitrous..12.7s..

ZONES89RS

iTrader: (2)

My 89 went 13.87 with 4.10 gears, 160k mile L98, RPM air gap and 750 hollry carb conversion with full length headers. So, with other bolt ons, i am sure you are not going to have any problem. I was launching like a puss.

Orr89RocZ

iTrader: (20)

i'm surprised you went as fast as you did with out a converter!! the 2800 stall on my car was the main reason i went half as fast as i did.

skinny z

1.6 rockers were worth 2/10's and 2 mph with no other changes when I did the swap.
Same track. Different day.

89IrocZ350TPI

What do u think id hit w/2800 stall? haha now u got me thinkin

Orr89RocZ

iTrader: (20)

my 1.6's made my motor lean. must have been letting alot more air in. I was mid 12's air fuel then went to 14.2 or so

EDIT:
whats your current 60 foot times?

whats your 1/8 mile

89IrocZ350TPI

1/8 was 8.2, and i believe 60 was 1.3.. have to double check

Orr89RocZ

iTrader: (20)

CAnt be 1.3. thats an 9-low 10 second car time

8.2 1/8 is also moving very very well. My 12.9's were 8.2's in the 1/8 and thats on a 1.71 60 foot

89IrocZ350TPI

haha the slips are in my room and i am far too lazy right now to go look for them. i know the 8.2 is correct. my guess is the 60 was around 1.9. your right 1.3 is nuts lol

89IrocZ350TPI

edit 1.8 .. just got off my *** haha. looks like you were faster than me.

87_GTA_5.7

Yeah 1.3 ****! lol Iv pulled a 1.8 but mostly 1..9s 2.0s cus Im spinning to hard out of the hole..too much nitrous off the line..well **** 75 shot wasnt anything..now shes a 300-400 shot beast MAAHHHH

89IrocZ350TPI

I wanna put down around 260 whp but i dont think its possible w/just bolt ons. The only things I have left are pulleys and the rockers.

19redbird89

I am curious about the pulleys as well. I have done some research but was lookng for some solid numbers before I move forward to buying them.

Brandon

89IrocZ350TPI

I was told by a few friends they are a waste of money until everything else is dont. I really dont buy the whole 12wrh claims. Prob more like 5 at best.

Thirdgen89GTA

iTrader: (5)

Its a very rare thing to have a bolt-on L98 with all the traction in the world hit a high 12. Not saying impossible.....just difficult. Look up Formul8's old formula. Every bolt-on imaginable, and it was a formula so fairly light too.

Thats a lofty goal. I wish you luck.

87_GTA_5.7

The pulleys work yes. Will you notice the power..prob not. All my buddys here..all mustangs but they think they have to have them. For the money they spent they could have done other things like, Cheap Headers, Anything for geting more air in/out, Finding a set of used heads anything. I mean You wont find any used AFRs for around $200-300 but something better than factory..but my budds, they are bummed that it did NOTHING for them at the track.

If you wanted to get pulleys, I spend a few dollars and get a CSR electric water pump, and the March Pulley brakets to work with the factory PS & ALT. Its less pull on the motor..more power making it to the ground and its a little less weight. It is a lot more money...but Im a firm believer in less drag more power.. Get rid of the A/C if you havent, Take that **** off the engine..less weight again..Fiberglass hoods, spoliers, Lighter wheels..thats all things to keep in mind..If you hit high 12s with out the bottle..Hold on for 11s on the bottle..

Orr89RocZ

iTrader: (20)

I've done both of those within the same time frame. The pulleys you can feel the engine rev smoother and quicker. I used March power and amp series, aluminum crank pulley. Extra light.

Power wise i dont think i picked up anything. It may have been minor.

The 1.6 rockers i did gain and i noticed a big difference in air fuel ratio change which i think is because of the extra air flow, but i also swapped to accel 24lb injectors which have a different spray pattern. either way fueling changed alot and i ran my 12's that week

I went 12.95 and 12.99 at 103.8mph with my bolt on L98. That was with HSR on top.

IF your doing 8.2 with a 1.8x 60 foot, a 2800 stall and slicks will drop that atleast 2 tenths. You should EASILY have 1.7x which in itself will net 2 on the top end. thats pretty close to 12.99 as is. I would figure in cold air your 60 foot should come down almost .2 and lead to a .3-.4 tenth gain.

For what its worth, my L98 put down 254whp with all the bolt ons, Stealth ram, and running lean at 14.2 or so to 1. Richen that up, adjust timing, I had mid 260's.

89IrocZ350TPI

For now I am just going to do the rockers. I was thinking about ordering the jegs brand. After than I'll have it dynoed and hit the track. I really dont plan on doing much better but we'll see. May need more than just bolt ons seeing as my hp numbers are kind of weak.

87_GTA_5.7

Hey Orr89RockZ I know Iv prob asked you this before but what are you running on just motor now? Still a 700? If so what stall? Watchin Vids make me wish mine was done..Love to see what mine does on the bottle!!

Orr89RocZ

iTrader: (20)

My 383 was doing mid 11s. Best of 11.47 in hot summer with abit of a traction slip. 1.55 60 foot but its capable of 1.49-1.50's and in cold air probly would have done high 11.20's at 120.

Just a mild rebuilt 700r4 with 3600 stall

87_GTA_5.7

Are you still doing the turbo build?

Orr89RocZ

iTrader: (20)

oh yeah, twins and its almost done with fabrication. Time to finish weld and get the new motor built up and dropped in

89IrocZ350TPI

I just saw the vid for the 2010 camaro. Funny now almost 40 grand only gets you 13.0's. I am almost there and I havent spend nearly that much. Still a nice car though that could probably hit high 11's fairly easy with the right bolt ons.

87_GTA_5.7

Yeah kinda a bum, Stock LS1 in SS or WS6s can get you into the 12.9s with the right driver, tires..bolt ons 11s, bottle high 10s, Heads/cam combo..deep 10s..9s on bottle..LSX motors are sick. I cant decide when my engine goes to get an LS or go with a true Pontiac big block..but I have to get my done for it to ever run lol

IROCThe5.7L

Yea, but it's a new car remember. You're paying for more than just straight line performance. Not to mention that 13.0 is at 111 mph. Once that car gets a decent driver with traction, I can easily see it going high 12's stock.

Thirdgen89GTA

iTrader: (5)

The V6 is running bottom 14's @ 98mph. This is a 3700lb car, so its quite abit heavier. I think the 3.5L v6 could be a fun swap into a thirdgen with bolt-ons, easy low 13 second car. Not alot of torque, only 273lb/ft, but it revs very well.

http://blogs.edmunds.com/straightlin...lenger-se.html

The V6 sounds pretty good too.

89IrocZ350TPI

Hey guys. I just ordered the rocker arms so im kind of pumped. Cant wait to get it re dynoed and see what it runs. My guess is a 13.0-13.1 but we will see. Almost time to get a cam

86 IROC

iTrader: (3)

Buy a converter! I cannot stress how much they help. I know rocker arms are cheaper, but it's not even close when comparing gains. My bet is that the rockers gain less than 10. Sticky tires + the right converter = run 12's as it sits.

Orr89RocZ

iTrader: (20)

Give it a shot with the rockers tho first. Seeing a stock trans/converter L98 go 12's with bolt ons would be very impressive to me

89IrocZ350TPI

Man what a pain in the *** those rockers were gah. I'll be going up to the track soon hoping to run consistant stock ls1 times.

Orr89RocZ

iTrader: (20)

They aint so bad Hope they work good on your car. They worked well on mine but never did get to retune it properly with the new injectors since the new injectors made it lean. I think it was because of the injectors but the higher lift rocker may also contributed. Still made power even tho it was so lean.

89IrocZ350TPI

They seem to be working good, and the car does feel a bit faster.

91interceptorZ

iTrader: (3)

I don't understand....are you guys saying you're bolting on pullies, HSR, headers, 1.6 rockers, some gears, and running 12's???.....stock they only run mid to high 14's...
Your saying that you went from a 245hp motor to over 300-320 horse with bolt ons?? (you need at least 300-320 horse to run 12's w/3500lbs of car) I'm not trying to say it can't be done....I just don't see it....and when I first got my car I did the same bolt ons.
I did the same thing here>>>> 1.6 rockers, HSR, MSD ignition, Headers, 3.42 gears, 2500 stall, pullies, air foil, 24lb injectors, chip, etc. I only went 14.0 @ 98-99.....the other camaros out here were running the same or slower depending on the bolt ons.

Not calling anyone liers or nothing like that....just doesn't seem correct to me.

Thirdgen89GTA

iTrader: (5)

You don't have enough off the line. The guy's gunning for 12s are doing it almost entirely on launch. slicks, big stalls....etc

91interceptorZ

iTrader: (3)

but your talking about little bumps in HP, 5 here, maybe 10 there.....I just don't see it...I know the torque is there, but your talking about dropping 2 seconds off a 1/4mi time with a launch. Now maybe you're right and getting a great launch does that....but the MPH is NOT affected by launch....and running 103 mph as someone said above would indicate around 310hp at the wheels.....not with bolt ons...no way. I could be wrong, but why is my 450hp car running the same as a stock w/bolt ons??
I had my motor put on a dyno after building it.....457hp @6200 rpm.....and I run 12's in my car with that motor in it (I'm at 3000ft elevation mind you, Idaho)

Thirdgen89GTA

iTrader: (5)

Your correct, that Trap speed isn't affected by the launch. However, 1/10th at launch is worth alot more at the end of the 1/4 mile.

I've seen a L98 thirdgen run 13.1's @ 99mph after Winger4800 bought it. He was gunning for 12's. It was Formul8's old black formula. Every bolt-on under the sun, vig stall, stock 3.27 9 bolt, and slicks. His 60 foots were rediculous. Stock L98 cam though.

91interceptorZ

iTrader: (3)

okay, I can see that I guess.....the 13.1 is way fast, very good launch..what is 60-foot times???....but the 99mph is right in line where my car was running when I had only bolt ons...

Thirdgen89GTA

iTrader: (5)

with a slightly higher stall, and gears I'm sure he could have done 12's. He had the traction.

91interceptorZ

iTrader: (3)

So I wasted thousands upon thousands of dollars building a motor....cause my goal was 12's.......I could have done it with the bolt ons.

Thirdgen89GTA

iTrader: (5)

A 12 second car on power, will always out run a 12 second car that does it on traction alone. So its not a waste.

91interceptorZ

iTrader: (3)

I know....should have put a LOL at the end.....

Thirdgen89GTA

iTrader: (5)

I get it now.

brandoz28

iTrader: (1)

what do your 60 ft's look like, i was running 12.8x at about 108 on a 1.85 60ft (hangover fest at cordova, it was like 15 degrees out lol) very traction limited. with traction and a higher stall that thing is gonna be bottom 12s, its just a stock vortec motor with an xr288 cam and supporting valvetrain modifications.

skinny z

It took all the mods in my sig to go 12.9 at 106mph. Poor 60' times of 1.8x average though.
I've read where 1/10th in the 60' translates to about 2/10ths at the end.
And I busted my 9 bolt doing it.

brandoz28

iTrader: (1)

man, we've got 0 suspension minus some cheapo summit 3 way rear shocks and some M/T 10.5 ET Street bias plies (about 8.5 tread width). got more cam and carb than that tho. but running shorties and a 3 inch Y pipe to a cutout.

skinny z

How fast?

Orr89RocZ

iTrader: (20)

underdrive pulley kit, HSR, tune, rockers, 3.42 gear, 2800 stall, full suspension, 3425lbs raceweight, shorty headers/full 3" catback with no cat(gutted)

12.99 at 103.x and 12.95 at 103.8.
12.95 was at a DA of 188 ft. Altitude at 1200 ft. Car made 254whp/315wtq

1.70-1.71 60 foot


Its all launch and good air.

NORMAL cool night summer air is 13.3's at 100-101. Air made huge difference