NHcamaro

Alrighty I'm on my way home from my g/fs house and I see this old lady coming up the ramp so I thought I'd be nice and get in the left lane so she wouldn't have to worry that I might not let her in.. well she gets in and then I hear this loud rev I look back and its a 88 89 GT mustang I just about died from shock. This guy must have really nailed it to get where i was because last time I looked my rear view there wasn't a car on the highway. I put it down into D and kinda do a little jump I. I pull in the right lane and he stays back a few and then nails it when he got about to my door I nailed it (ha ha like that helped at all) well anysway he just kept going I really didnt feel like going after him.. to much traffic. anyway I know I would have lost. He had 5 speed and cat-back (from what I saw ). What stock mustangs can I stay up with what years? some V8s ? or just v6s ? or done

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1988 Sport Coupe 305 TBI
K&N
Flowmaster exhaust


Daily driver:
1988 K1500 5.7 4x4 shortbed flowmaster cat-back gutted cat.
AOL: RyanNH84

NHcamaro

I ment none ..got to learn how to type

90Iroc-Zee

Probably none. A few tiny mods to those V6s and they will rape you too.

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1990 G92 5spd LB9 - 3.42 80,000 miles

Accel Ignition/Wires (8.8mm), Advanced Timing, TB Bypass, Ported and Gasket Matched Plenum, Synthetic Motor Oil, 160 Thermo, TPIS Airfoil, K&N Air Filters, Centerforce I Pressure Plate and Clutch, Edelbrock TES Headers, Dual Cats, Edelbrock RPM Series Catback, Homemade Ram Air, Bosch +4 Platinum Plugs

14.4 @ 94mph w/2.0622 60ft (w/o headers and catback)

14.426 @ 96.19mph w/2.167 60ft(w/headers and catback)

Also newly modded w/o track times:

Holley AFPR, Underdrive Pulleys, KYB Shocks and Struts, Crane Ignition

ImportsRsloths

your l03 stands for LOW OUTPUT... his fox body gt stands for More horsepower, good 5spd, less weight, he might as well have a liscense plate that says LO3RAPR or TBIRAPR

HrdRockA4305

An L03 is no match for any V8 stang, unless its seriously modded. Especially if its an auto. The 5spds at least have a better fighting chance, but still, stock for stock theres no way. And the ford 5.0 accepts mods very readily, and few are stock. My car would need headers/gears/shift kit, probably an intake, and maybe even a new cam to beat a fox body 5.o/5 speed. A few of my freinds have stangs, and they would hand it to me any time anywhere. But hey, they've got Ford's performance engine. The Lo3 is not GM's performance engine in our years, the Lb9(?) and L98 are the ones actually build to run. I can already hear it coming from the less mature folks out there... I know i'm gonna get called a stang lover or something for this, but if somone can prove me wrong I'll be happy to hear it.

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88 Camaro (not an RS, or an IROC, justa camaro.)
305TBI/700R4/2.73
14" Open Element and Flowmaster 80 seires

Next up: headers and gears

ImportsRsloths

HrdRockA4305 you hit that stuff on the knows.... those 305 TBI engines are worse than a freakin honda VTEC (and have less horse imagine that).... if i owned a tbi id go to a junkyard but a 350 block (with pistons and everything) and then put my own ported heads and a cam in there..... then just put the tbi back on it (isnt tbi what big block guys use when they want fuel injection)

CODY BEHNKE

WHERE ARE YOU PULLING THIS OUT OF? I OWN A 91 FORMULA TBI AND A 91 MUSTANG GT MY FORMULA RUNS A MID TO HIGH 14, MY MUSTANG RUNS A HIGH 14 TO MID 15. 90IROC-ZEE ISN'T ALL THAT. LO3'S JUST NEED A LITTLE HELP. NOT ALL OF THESE "ULTIMATE" AND CHEAP A** MODS EVERYONE DOES.

91 FORMULA 305 TBI 1991 MUSTANG GT
5-SPEED 5-SPEED
3.08 GEARS 2.73 GEARS
43,000 MILES 67,000 MILES
K&N,5.0 H.O.AIR BOX K&N,FLOWMASTERS,
5.0 H.O. Y-PIPE, H-PIPE,ACCEL IGN.
MSD IGN.HOLLEY IGN. NEW CLUTCH, PRO 5.0
MODULE,FULL 2 1/2 SHIFTER, LARGER
EXHAUST HEADERS

iroc22

C'mon lets have some credit for the mighty 1/2 ton pickup truck 305 cubic incher. The L03 isn't that bad if you know how to drive it. Here comes the story:
I was cruisin home from work on a cool evening and i pull up to a red light. I was in the fast lane and beside me pulls up a deep sounding mustang convertible, looked like maybe '96. It had the crome wheels and a huge crome rollbar. This guy looked like he was serious stuff. I checked out the front fender and just saw the mustang symbol, so it must have been the v6. So anyway, he revs his engine and the light goes green and he screeches his tires pretty good and i dump my engine at 2500rpm. I get some pretty good wheelspin too. We came off the line equal but i gained on him. I shifted into second at 3500rpm, getting a huge chirp. We ended up racing to 75mph and i was at least half a car length when my turnoff came. The moral of the story is that the mighty L03 isn't all that bad, you just have to keep it in the power range and shift hard. You would be surprised how many people you can beat with this engine.

Heres my mods:
'89 IROC Convertible
305 TBI L03
Open element K&N filter
Dynomax turbo muffler
Full MSD ignition setup
Bosch Platinum plugs
hurst shifter

that's about it

iroc22

oh yeah my IROC has the lowly T-5 that has withstanded incredible abuse

ws6formula89

Running a mid to high 14s with the mods you listed is really hard to believe. With all my mods, I am only running a 14.1. I have changed everything on that motor, except the heads, which instead I had built (dumb move on my part).

LO3s just need a little help? Now, I respect the L03 as a NON-PERFORMANCE engine, and how it performs as a non-performance engine. But the fact is, it's going to take a lot of work, time, and money...only to hang with a stock L98. You can take that from me. Tossing money into that 305 TBI is just worthless, when I could have just taken that money I spent and built an awesome 12-13 second 350.

-ws6formula-

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1989 Pontiac Formula WS6
69,000 miles.
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305 TBI, 4.10 gears, SLP Zexel/Torsen Limited Slip Differential, 700r4 Corvette Servo, LT4 Hot Cam/Valvesprings, GM Aluminum Driveshaft, 2700 RPM Stall, Edelbrock Performer RPM intake manifold, Turbocity TB. Ran on 6-19-2001 again: UPDATED: 14.1 @ 97.68 mph. Dyno'd Bone Stock @ 172.6 rwhp, 266 ft-lbs. of rw-torque.

[This message has been edited by ws6formula89 (edited August 15, 2001).]

IROCThe5.7L

I knew IROCS well but not engines. Thanks to you guys, I made sure I got a 350. Or I would have just baught any IROC that was good. I got my car for speed!

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1988 Jet Black IROC
5.7L W/ 64000 miles
Flowmaster Exhaust
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My IROC

NHcamaro

Well when I got my camaro I knew nothing about camaros..all I knew is that I wanted a car with a v8 and not a ford...now that I look back I should have looked around for a LB9 but at the time it was a great deal and it was a v8 ..I would rather have my LO3 then any riced out import.

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1988 Sport Coupe 305 TBI
K&N
Flowmaster exhaust


Daily driver:
1988 K1500 5.7 4x4 shortbed flowmaster cat-back gutted cat.
AOL: RyanNH84

chevyguy8

Amen.

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91 Camaro LO3 RS 5-spd
Open air element, 16in Chrm IROC-Z wheels, dual 30in chrm exhaust tips, Z-28 wing,ACCEL 8mm wires w/cap n rotor, K&N filter, flowmaster, headers in near future. dual fans.

92fire-audio

Hmm, didn't know so many other people were in the same boat as me... When I got my car, all I really wanted was a V8 and something that looks nice.. I didn't know the difference between TPI and TBI but now that I look back on it I don't really regret it much because I haven't had any engine problems after 2 years.. When you buy a used car it is basically a shot in the dark unless you know the owner or have "see thru engine" eyes, I'm fortunate after 140,000 miles that the tranny and engine still run the same as the day I bought the car... Now, I hope the engine does die sometime so I can justify getting a 383 or something...

NHcamaro

yeah same here..just turned a little over 120,000 and I really only had to fix the temp control...well when I first got it it needed rear axles seals and all new back brakes in the back other then that it runs fine...

91rscruiser

as an L03 owner i really dont get what the big deal is about these motors being pieces of s*it.i mean c'mon,if ford can make a 5 liter motor fly,why cant the L03 fly also?big deal the 5.slows have true F.I. and we're stuck with a fake *** 2bb carb.5 liters is 5 liters.all we need is a good set of heads,a good manifold,and a good exhaust.not too much money.i figured out a nice performance package to put together for about 2 grand that will get me into the high-mid 14's no prob.on just motor.nitrous or a blower can easily get it into the low 13's no prob.and if im right most 5.0's are only in the mid 14.2 also.and you know that most of these dumbass kids with 5.0's are mainly stock,save for a catback Flowmaster system.the only real advantage i can see they have is that most of them are 5 speeds.but drive an auto right and its not too much better.especially when you look at the consistency factor and the fact that you also cant miss a shift.ahh feels good to let out a little steam once in a while.guess im just pissed about having my L03 always getting ragged on.

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-1991 camaro rs,dark red metallic,t-tops,stock 15inch rims
-stock L03 305,TH700R4,2.73's,only mod for now is a Flowmaster 80 series replacement muffler.
-best 1/4 mile times:16.2@84/2.37 60ft

HrdRockA4305

I guess I'll contradict myself somewhat here and defend the motor for a bit. My position on the Lo3 is that its not a performance motor. It wasn't intended to be. Its a caprice/truck motor, and fills the gap between the HO V8s and the V6s. It'll run forever, and makes nice enough low end torque to haul around nicely like a V8 should, all without being too hard on gas. My cars not fast, and will take a lot of work to become fast. BUT, by not having the IROC i'm paying less insurance, and the initial cost of the car was cheaper. When you're a college guy, and you find a car that you know is in better shape than any other "sports car" you can afford, you usually take it Once I can afford to, I'll put an engine in that can actually perform at the track. (ZZ4 maybe?) That was my plan all along. Have a nice ride right now, maybe not one that'll win races, but a car that looks good and i really enjoy driving. My final .02 on the subject.

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88 Camaro (The mighty LO3 SC!)
305TBI/700R4/2.73/122,XXX miles
14" Open Element and Flowmaster 80 seires

Next up: headers and gears

darbster

Hey guys...the SC is a great car...Ive had my 88 for four years(16yrs old) and i absolutely love it. That lil 305 TBI is a good motor..With decent gears that car would be pretty fast. I get mine back tomorrow...except the 305 TBI will have been magically replaced by a 20k mile 350 TPI But like i said....The 305 was a healthy motor, had 170k and was still tickin...cant wait to feel the L98 in there now though...Looks like I'm gunna have a lil bit of a sleeper huh?yeah!

Black82Z

the L03 and LG4 always seem to be slower than the 5.0 fnords because of the principles of physics. On the 302 the bore is 4" while the stroke is 3". Since the bore is bigger it unshrouds the valves, and the heads are a little larger so they allow more air and fuel into the cylinders plus they have a larger cam stock than we do. Since the stroke is so small this makes for a very fast downward stroke which doesnt make as much vacuum as a 305 or 350 because there stroke is 3.48". That is why the 5.0's like the power up higher and have to have stick or else they are slow off the line(without gears anyway).
With the 305, the bore is smaller but the stroke is longer and creates more vacuum, hence the greater torque(and the reason 305's have more grunt that a 302 at low speeds). Now the problem with the 305 is that the heads become the bottle neck in the equation. Because the bore is smaller the intake ports are smaller and so are the valves, but with a little work on opening up the heads they will flow a bunch better. For example with the mods in my sig (except all the head work and the cam) my car would pull to 4500 and no further, but as soon as I opened up the heads and intake and put the cam in the engine will pull easily to 5500, and I have even had it up to 6000 a couple times.
So as you can see everything has to match, if the exhaust cant flow what the engine expells then more air in will only add to the problem. so as to phrase other people on this board if you have a 1/2" hose which has a spliced in piece of 1/4" that will be the determining factor on how much can flow, same concept with intake,heads,cam and exhaust.

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82 Z28 have LG4-305"
Rebuilt heads-3 angle valve job,ported and gasket matched. comp cam xtreme energy 262 edelbrock performer, chevy 1.6:1 roller rockers,MSD6AL, rebuilt carb,15x4" K&N
3"flowmaster american thunder, Mac high flow cat,headman headers,
700-R4--B&M shift kit, B&M tranny cooler.
Sub-frame connectors, boxed lower control arms and torque arm. 1.5" front sway bar, new BFgoodrich radial T/A's--215/65 front 255/60 rear
RADIO-- premier Deh-p300
2-10"kicker SPLs,ZR240,premier 434x(4 way), custom built fiberglass box for subs. pioneer 6X9 & 4X6, grant GT steering wheel