I went to virginia motorsports park friday and ran a 15.21 at 89.7 mph my 60' was 2.18 but i could fill my tires spin through first.
I was running street tires is this a good time for a stock 350 TPI with just the free mods. i know if i had some tires with some hook i could have easily hit mid 14's. At least i went to the semi-finals in the street wars. Bracket racing is all about running what you dialed.


THANKS BLAKE

------------------
89 T/A GTA 350 TPI free mods and all stock
15.21 @ 89.7

 

Hate to say it but thats not good for a 350.
The mph is pretty slow and the 60ft is not that bad if you have no suspension mods and less than optimal tires. Plus spinning would probably have given you a higher than normal speed thru the traps. I've raced at Dinwidde and its a pretty good track.
How many miles are on the car? Does it have a good tune up? Did you jack up the front tire pressure and lower the rear a little for more traction? If you spun all the way thru first you obviously have some good power happening. Something is amiss here...
But man, ain't it fun lining up at the tree?
I've been itching to go back...

------------------
Rob P
89RSconvtZZ4TPI
Edelbrock Hi-Flow Intake
SLP Dual Cold Air Intake
1 5/8" Headers
Semi-Siamesed Runners
MSD6AL/relocated MAT/ AdjFPR/IROC frnt@rear swaybar/wonderbar/steeringbox/alum drvshaft/ Alston SFC/3:23posi disc rear/MAC LCA/H.Adams Panhard Rod/KYB struts/ shocks/
92Z28convt5spd
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

yes it is really fun but i think my tranny has something to do with it it just wouldn't shift anywhere below 5,000 i just got my transgo and i think maybe then i might be able to break the 14's but even if my car is slow it sure is fun to run it down the track.
I just need to spend a little more money i guess.

 

anybody think this is a bad time also my car needs some tuning done.

------------------
89 T/A GTA 350 TPI free mods and all stock
15.21 @ 89.7

 

U should be in the mid to low 14's. Answer the questions asked in the other post, and that will give us some information.

 

The motor only has about 5,000 it is the caprice replacement from Jim Pace Performance parts yes it just had a tune up at about 3,900 and i put front tire pressure up to 58 and rear to 21. hope this helps

 

TTT

 

yea it is a bit slow...make sure your O2 is good...I gained 6 tenth and 4 mph just by changing it...(cuz the ECM was never geting a close loop reading...long story). With better tires you'll see high 14's (like 14.8). Some headers should be the #1 mod you need right now...here in FL, I have seen only one 3rd gen turn 13.9 all stock (I checked it myslef), the owner said he had a chip and K&N, and some very big slicks out back...dunno about suspention and his mph was I think 98.

 

At 89mph your not going to be running 14's with or without tires. Your 60' not all that bad considering. If you get much more traction you'll bog the motor down off the line and you'll run worse. The power's not there. But that is what stock 350 TPI 89 GTA's run. Your right on target for average that is. Not to bad. If you haven't done a full MAJOR tune up then do it before modifying it. When I say major that means O2, wires, etc.... The O2 sensors are cheap usually around $20; buy one if you haven't. You might gain back some lost HP and get closer to 14.99.
BTW there's no way that an 89 GTA should be mid to low 14's stock or very close to stock.
~Brendan

------------------
1988 Turbo Trans Am GTA - 3.8L V6 turbo w/ 700-R4
"There IS a replacement for displacement!"

<A HREF="http://turbogta.homestead.com/main.html"></A>

[This message has been edited by Brendan (edited April 30, 2001).]

 

Gotta question about that caprice motor. Is it the TBI motor? If so, did you change out the cam to one for a TPI setup?

 

Yes it is the tbi motor and no i didn't change out anything just stuck it in put the tpi on it and went. If i had a bad o2 then wouldn't it throw a code. and where can i get the vacuum line running from the front of the egr vavle it is not there and i need to put one back on.

I think since i have the caprice motor then that is why i'm running so slow.

THANKS FOR ALL THE HELP

[This message has been edited by transam350 (edited May 01, 2001).]

[This message has been edited by transam350 (edited May 01, 2001).]

 

Yeah, you answered your whole problem right there. That TBI 350 has a peanut cam, and quite possibly swirl port heads. In other words, it's a glorified boat anchor. Sorry, but sometimes the truth hurts.
...ed

 

i big to differ on that one....my car stock before any mods were done ran a 14.6 so the owner told me....u get the right driver behind the wheel u can do it...i've seen MAF L98's run anywhere from mid 15's to mid 14's GM was very inconsistant in the performance of these cars

------------------
Originating member of the SJNEP Crew
Member of the Jersey Fbody Crew(JFA)
Check out MyGTA Nicknamed:The Big Red Machine
***AOL IM RiceEatinGTA***
Moderator at www.transamgta.com
"What does not kill us only makes us stronger"

Tony

[This message has been edited by fly89gta (edited May 01, 2001).]

 

So if i put the other heads and cam from the original motor which is sitting in my basement it would make it have a little more power. And since the original heads are off i'll do a little port work on them then you think i might be able to break the mid 14's also the caprice motor has LT4 rods and crank does this help any.

THANKS

 

I don't want to start an argument, or start a flame against anyone, but my brothers 89 GTA ran 14.7 stock here in Indianapolis. My 1990 Iroc 305 runs 14.7's now.

 

Yeah, if you have the original 083 heads from your L98 i would look to putting them on with a little clean up work perhaps depending on condition (and while they're still off.) 083s are a reasonably good head for stock, and prolly better than a GM L05 rebuild would carry.
The cam is your biggest bottleneck. I wouldn't bother with the stocker though. Comp's XR line is really popular, but for ultimate low buck, the ZZ4 (hella mild) or LT4 hot cam (medium) wouldn't be too bad either.
...ed

 

i thought about puttin a different one than stock after i posted. So since i do have the L05 is 15.21 a bad time for my car.


THANSK TO EVERYONE FOR YOUR HELP

------------------
89 T/A GTA 350 TPI free mods and all stock
15.21 @ 89.7

 

Fly89GTA: "i big to differ on that one....my car stock before any mods were done ran a 14.6 so the owner told me....u get the right driver behind the wheel u can do it...i've seen MAF L98's run anywhere from mid 15's to mid 14's GM was very inconsistant in the performance of these cars."

The original statement was that they regularly run low to mid 14's. The fact is, they don't. I've owned 4 third gens, two where 88 & 89 GTA's w/ 350's. One ran high 14's stock and the other ran a terrible 16.2 (that's the one that has the 3.8 V6 now). That's great if the previous owner said your car was a 14.60 car but have you actually run it since to verify that. GTA's are nice cars, I like 'em, but for the most part they ran high 14's and 15's stock from the factory.


------------------
1988 Turbo Trans Am GTA - 3.8L V6 turbo w/ 700-R4
"There IS a replacement for displacement!"

&lt;A HREF="http://turbogta.homestead.com/main.html"&gt;&lt;/A&gt;

 

Does a caprice have a much different compression ratio than our cars?

Just wondering if the pistons are different (dished)

My car ran a 14.6 at Island, NJ off the showroom floor. Thats the only doc I got with the car when I bought it was a timeslip? It's faster now though..... I believe the car ran it, but was it completly stock or cut-back plugs and other stuff thrown at it I'll never know...

I would have the stock heads done up and shaved to 60cc while you already have them off you could 'butter' a machine shop by saying "I don't need them in a hurry, could you give me a discount" Get at least a 3-angle and full bowl work done, springs good to at least .550" and guides for that figure with the rest following...

Cam, definatly get a cam, the work spent here isn't worth sticking the old stock stick back in. The ZZ4 at least. That's what I run, but it is actually a mild stick and very cheap now-dayz.

Just with this you should definatly be in the 13's. I'm well into 12's with the ZZ4 and there's more to it. Exhaust, I'm running 1.6 RR, 24# injectors, custom chip, SLP runners ported fully like madmax did (intake too).......................

It seems like mid 13's under take some major sh:t to do for a 350TPI, but the 13's are not far away for you.

I'm sick of 'powertuning' already and want to step up to nitrous/supercharging but my bottom end will give out cause i'm running hyperglass. I know a heavier cam will help, but now too much at this point IMO.

So I'm at the crossroads $$$$$$$$$$$$$$$$
Leaving it alone until I either do a 383 and/or SC it but I'm definatly ready to blow my $$ on my six just to get it 'peppy' with a crate (ramjet)

I do have to do some highway driving and a mild mild v8 with highway gears seems good to me. Or I could get that ATI Procharger 12PSI

The devil and angel on my shoudlers and you can't get into the 13's?

 

Joel on the caprice motor jim pace said it was 9.8 and it has forged pistons that he put in it.


THANKS

------------------
89 T/A GTA 350 TPI free mods and all stock
15.21 @ 89.7

 

point taken Brenden...i have a question for you....how long did it take you to do the 3.8 swap? and what are u running...cause i'm doing that this summer i can't WAIT!!!

 

I need a tune up too.

------------------

• Red '91 Z-28 350
• 700-R4 Trans
• T-tops
• no major power
  gaining mods, K&N
  Filter, Flowmaster
  exhaust -series 80-,
  exhaust cut-outs
• Best E.T. 15.0@93mph, Will improve that 1/4 mile time this spring.
• HardlinePerformance

 

WOW my first post that's on fire!

 

Im sorry guys, but I have seen too many L98 mass air cars going low 14s. My 88 Formula went 14.30s at 95 & 96MPH all day.


------------------
L98, 3.27 9-bolt, Hooker shorty headers, custom 2.5inch Y-pipe, no cat, 3inch 2chamber flowmaster, JET AFPR, Ported MAF, Best ET: 13.86 @100mph. 1.99 60'
17 inch ROH "ZS" wheels. 17x8.5(front) and 17x9.5 (rear). Firestone Firehawk SZ50s. 245/45/zr17s and 275/40/zr17s. T56

On the way... Radar Blue 89 Formula, T56, Ram Jet 430, Ram Air, 17inch ROHs.

 

i have seen several bone stock mass air l98's run 14.2's to 14.4's bone stock, but i have seen some that only go 15.4's because the 700r4 wouldn't shift into 4th when they were at full throttle and they got suck in 3rd, mine runs low 13's with stock heads, cam, intake system, i have the small bolt ons, headers, and a turbo 350 trans with stall(the trans makes the real difference, it shifts so quick and keeps the tpi in it's power band with the stall) soon upgrading to a superram, hoping for high 12's with stock heads and cam

 

Fly89GTA: My car ran a 14.00 @ 99.17mph last year in the Texas heat at only 14psi of boost. My 60' time was a horrible 2.3 seconds with of course street tires. My positraction 9-bolt diff. is worn out so I was have some traction problems. At the time the engine was completely stock; in fact worse. So all and all not to bad considering. I have no doubt it will go faster than that this year. I'm looking for low-13/high-12's.
The swap itself wasn't too bad. I was just time consuming and took a while to prepare for. We did the actual swap in about 3 days. That's pulling the old motor and wiring harness, installing the new harness, the new motor, and new fuel pump, etc.... Let me know if you have any questions about it.
~Brendan

------------------
1988 Turbo Trans Am GTA - 3.8L V6 turbo w/ 700-R4
"There IS a replacement for displacement!"

&lt;A HREF="http://turbogta.homestead.com/main.html"&gt;&lt;/A&gt;

 

Your 700-R4 should NOT be shifting into 4th gear while running the 1/4 mile. If it is then something's wrong. You don't use overdrive to drag race. Your saying your car runs better than an slightly modded LS1 in the quarter with a few bolt-on parts. How may bolt-on parts does it take to run low-13's (excluding superchargers and nitrous) w/ stock (no porting) intake, cam and heads?!?
~Brendan


------------------
1988 Turbo Trans Am GTA - 3.8L V6 turbo w/ 700-R4
"There IS a replacement for displacement!"

<A HREF="http://turbogta.homestead.com/main.html"></A>

[This message has been edited by Brendan (edited May 02, 2001).]

 

I have a friend with an 89 iroc 350TPI. It went 14.28 @98mph at Bakersfield CA, and is BONE stock. Even the stock muffler.

 

Hey guys, so is it good that with my 305 TPI that I am running 15.2 @91 MPH near Chicago?? I thought I was running OK, but not that good. When I didn that run all I had was K&Ns and a chip from ed wright that I stuck in the day before. Everything else was untouched, but I did a tune up and an oil change too, but those don't count.

Now I live at 3600 feet and run mid 15's on a calm day. I also have an MSD, Airfoil, AFPR set @ 50 psi, 8.8 wires, supercoil, gutted airbox, gutted MAF, a Hooker muffler, no cat back, and I think that's it. So far my best is 15.69 @ 87.9 MPH on a windy day.

oh well, i guess my 305 ain't as bad as I thought.

Later,
Jesse

------------------
85 Z28, 305 TPI A4
pretty stock with a few toys
15.2@91mph
http://photos.yahoo.com/j_hougnon

http://screamindeamin.cz28.com/images/jesse/

 

DUDE..Wanna gain like 4 tenths?? Lower your freaking fuel pressure!!! 50 psi is insanity on your car..trust me..I run best at stock! 87 MPH is god awful for your car..you aren't that high up either! Trust me..It's all in the psi my friend..


------------------

• Red '88 IROC 5 Speed 305 TPI w/3.08
• Dual Friction Stage III Centerforce Clutch
• Accel 300+ Racing Ignition
• Accel 300+ Pro Sleeve Plug Wires
• AC Delco Rapid Fire Plugs
• Flowmaster Force II 3 Chamber Cat Back Exhaust
• Hypertech Chip
• Hypertech Airfoil
• Gutted Air Box
• Best Maryland (40 degrees) E/T 14.686, 60' 2.205, 1/8th mile 9.461, 1/4 mile MPH 93.91
• Best Florida (80 degrees) E/T 14.88, 60' 2.163, 1/8th mile 9.540, 1/4 mile MPH 92.74
• Best 60' 2.163(Florida)
• TPiS AFPR set to 42psi using Accel Fuel Pressure Gauge (Installed after Maryland run)
• Aluminum Driveshaft (Installed after Maryland run)

[This message has been edited by Yarnboy (edited May 04, 2001).]

 

Just got of the phone with Jim Pace himself and he said that the caprice motor i have is the one with the crappy cam and swirl port heads. He said if i ran a 15.21 with that motor stock it was a great time. He said change the cam and put my heads with a little port work and i would be in the low 14's easy. So i guess i'm pleased wiht what i'm running with the motor i have at least i can start with a brand new block and parts to start building.

THANKS
blake

------------------

 

Not to beat a dead horse or anything, but, all of these times are based on so many different things that you can't say what one car would run against another on opposite coasts of the country. You have wind, elevation, tires, temp, condition of the track...the list goes on. I talked to several Californians that say their stock L98's run low 14's. But, here in Missouri, my best bone stock run was 15.00@92.5mph and a 2.12 60ft. on street tires. Now my 60ft. is shot b/c of tires and mods. But I still not as fast as the west coast guys are stock. I figure if I ran out there, who knows what I would run???

------------------
1988 Iroc-Z
L98 350 TPI
700R4 Tranny
2.77 gears(will change)
--------
Mods: Crane CompuCam, headers, gutted air boxes
Best e.t.: 14.49@95.5mph
60ft.@2.27(was 2.12 w/o cam)

 

15.2 is about right for the 245 hp l98. The first time I ran down the track was with only a hypertech chip and k&N's. It ran a 14.7 which wasn't too bad. The last time was a 13.9 with minor bolt-ons. The trick is in eliminating emissions and timing.

 

I totally agree with Badbowtie,its very hard to objectively compare E.T's from different states, tracks, etc.My times of 13.70's at 101-102 mph are at approx 800 ft alt and a relitivly poor track.Add in street tires that boil through low gear if WOT.Like bowtie my mods have hurt me pretty bad on street tires for any kind of decent 60 ft.Of course its MY choice to run street tires,just dont feel like building another rear end LOL.

------------------
86 z28 zz4 ssm lift bars ,3.73 simesed runners and a traction deficient 13.707@101.02,on a 2.16 60 ft on 295/50/15 junk street rubber ,best MPH run 13.82@102.7,69 AMX,390 4 speed sticky tires and other stuff..12.94@102.3

 

It's not my 700 r4 it is my friends and i thought the same thing, i figure he should be able to get 110 mph in 3rd

as for my car i have home made ram air, air foil, hypertech coil, acccel 8mm wires, headers, emissions removed, hypertech chip, 160* stat, no cat, flowmaster muffler, th350 trans with 3200 stall

 

If I'm not mistaken, you said TBI, not TPI. TBI is a horrible injection system. A 350 TBI I wouldn't doubt ran that, if you still have the ol' L98 then I would pop that sucker back in and sell that motor for what you can get.

And who says 3rd Gens don't run mid 14's? My friend has an 89 Formula 350 G92 bone stock and he's running around my times or better. Both of our cars are bone stock...until summer starts of course = )

------------------
1990 G92 5spd LB9 - 3.42

Accel Ignition/Wires (8.8mm), Advanced Timing, Homemade Ram Air, TB Bypass, Ported and Gasket Matched Plenum, Synthetic Motor Oil, 160 Thermo, TPIS Airfoil, K&N Air Filters
14.4 @ 94mph w/2.0622 60ft

 

Everyones car is different but mine went 14.25 at 96.07 BONE STOCK on Yokohama S306's pulling a 2.03 60ft. I know a guy with an 88 GTA that went 14.9 the same night with exhaust, dunno why.

------------------
89 Formula 350 WS6

CAR
Bright Red, grey interior, T-Tops, power everything

MODS:
K&N cone filter, removed MAF screens, TB bypass, SLP airfoil, MSD coil, Flowmaster catback, BMR lower control arms, BMR panhard rod, Energy Suspension bushings, Goodyear Eagle GSC's 245/50ZR16, Nitto NT-555R 245/50VR16 rear

60ft-1.9
1/4 ET-13.9
1/4 MPH-97.5

 

Geez, I never realized they could that much a difference. I was disappointed in my 14.5 time with my heavily modded 305 TPI. The oxygen senser is one thing I didn't think about. I used the old one in the motor swap. I hope I can break into the 13s without my Nitrous.

 

a