this is the work i have done so far does anyone know what i can do for more power i dont have a lot of money right now but maybe their is something cheap im forgetting to do.im only running 15.3@93 and 0-60@7.1 that was before the homemade air induction and ignition. i test it on my gtech i know its not very fast for A l98 but my right tire is allmost bald. any help would be appreciate it.





Description of Work
new brakes
air foil
under drive pulleys
b&m shift kit
flow master muffler
400 h.p. fuel pump
bbk fuel presure regulator set@42
timing advanced to 8*btdc
hollowed out cat
new 2 1/2 ex. pipe
new mass air meter
new computer
new ignition module
new plugs
polly graphite trany mount
new m.a.f. relay
ported upper plenum
a.i.r removed
new autocraft battery
kyb struts & shocks
160,fan switch
180,thermostat
home made cold air induction
high performance ignition (cap,rotor,8mm wires,blaster coil)

 

The reason your car doesn't go any faster is because you haven't done anything to make it faster. Out of that whole list, at least half of those things are regularly scheduled maintenance, not any sort of modification; of the things that are modifications, most are completely neutral in their effect, such as a AFPR set to the stock setting and a high-flow fuel pump, which you'll never use the flow because you still have the long-tube runners, so at the flow your engine does use, it's no different from a stock one; and the few things you've done that would actually change the motor, are merely nibbling around the edges, and I doubt are worth 5 HP total (air foil, plenum port, pulleys, remove AIR).

I see a whole lot of money on your list. I believe I have built whole motors for less than the sum of all that stuff. If you want to go faster, the first thing you have to do, is to understand what is the current limit to the car's speed; spend your money on that one specific thing even if it's not cheap or easy to get to or sexy-looking, not shotgun it all over the place on stuff that looks cool or is easy to un-bolt and re-bolt; then once you've made an improvement, analyze it again, and understand what the next limit to performance is.

Right now your first bottleneck is your exhaust. Your car needs headers to do anything any better than what it's doing now; and 2½" exhaust is too small, it's smaller than what came on the car. You used your own money as the weapon to shoot yourself in the shorts with on that one. Next, it needs gears. A set of 3.42s would be about perfect. After that, you'll need to make it breathe a little at a igher RPM than 4500; that means a new intake base. etc. etc. etc. Find the weak link, fix it. That's how you get the best bang for your buck.

 

i understand what your saying i am not stupid when it comes to making these cars faster its not my first performance car i have had 3 mustangs and a formula 350. i have made my car faster than it was with the bolt ons and my center exhaust pipe was 2 1/2" from the factory i we looked it up and measured it the car was a single cat car. your right though i should get a 3" center pipe and headers. thing is i read about all the other third gens running low to mid 14s with just minor bolt ons less than i have and my car is running low 15s all though my tire is very low on tread.its not that i dont know what to do its just i dont have the money right now but i guess your right i just have to save and get what i need.

 

them numbers are terrible for an L98 even with the few mods you have as for the right rear being almost bald, makes no sense why, but you may want to fix that as a start. timing seems too high, also, why an 160 t stat switch with a 180 stat? keep going with more bolt on's, you may see 14's. lol

 

Aren't you supposed to get at least mid to high 14s with a stock L98??

 

 

hey zippy your real funny maybe you should drive a honda you little freak i asked for help not your wise *** opinion thanks for nothing.

 

What is the altitude where you live? Have you factored that into your ET?

A stock L98 should run 14.7 or so, with a corrected time. Is Poughkeepsie in the mountains or on the coast?

 

hey im sorry about the attitude but i thought you where giving me an attitude with the ad more bolt ons for 14s comment. i have have put alot of time and money into my car and i dont like it when someone cracks on my car. anyway poughkeepsie is not in the mountains its like 80 miles north of new york city but now im about 125 miles north of the city it is in the catskill mountain region. i tried to run the car on the gtech today but the gtech wasnt working everytime.

 

I'd be curious as to if that is even a L98 you have or a LB9. Those times sound more like a 305 time. Check your RPO codes and make sure that you have a L98.

 

Find out what gear ratio you have, I bet it's 2.77 or so. Get some 3.42's in there. And make sure you have a good posi.

 

you should wory about things like heads, cam, exhaust, intake, and things like that before all the bolt ons. all the bolt ons in the world wont help you if you don't have the engine to suport it. remember that the power is made in the heads and cam, then you need to have an intake and exhaust that will suport it. once you have basicaly what you want then get all the bolt ons you want. the l89 heads should do pretty good, i think headers and a good exhaust will help you the most right now.

your not going to make 400hp with all the bolt ons in the world if your heads and cam will only suport 250. i think most of the bolt ons they have are a waste of money and arn't worth what you pay unless you've got a ton of money and realy want them.

a rear end will help a lot if you have a 2.77 or something.

 

well i checked my rpo codes along time ago my car is a L98 and my car has 3:27 posi so thats not my problem unless someone changed the engine and put a 305 in? now i have a new problem i went to start my car and it wouldnt do anything i had power from the battery just wouldnt do anything.anyways i know i need heads and a good cam and a good intake just dont have the money.

 

well, when my 86 iroc stock went 15.65 best, i was not happy. going .3 faster with an L98 with a few mods on it, something is wrong. my point is rather than throwing bolt on's at it, find out what's wrong with it in the first place. i don't see anything wrong with a honda as many would smoke your 15.3 second time and to make it better with one or two bolt on's to my sonoma gt, the 4.3 would beat your time. btw, my 305 iroc when i sold it, 14.40 best pass. crack all you want, i've worked on many third gens, along with many other models and know what it takes. in your case the first thing i'd be going for is why it's slow to start with, not what else to throw at it.