I've looked up some mods and I'm planning to purchase the following...
AS&M large tube runners, SLP cold air induction, Powermax catback/exhaust, slp headers, random tech high flow cat, and a neal racing torque converter. Now this car is totally stock runs about 15.4 needing a tuneup in the 1/4 mile (I'm pretty sure i can achieve a 15.2 stock time). What kind of performance increase should i expect? 1/4 times? Thanks in advance,oh yeah.. what else would you recommend?

 

Listed below are my mods and 1/4 times. If you have any questions please e-mail me.

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1988 Formula 5L/5sp 3.45 gears, SLP cold air kit, MAS gutted, TPIS air foil, TPIS AFPR, MAC headers, Mac under drive pulleys, MAC cat back, Relocated MAT.
Best ET street tires 13.85
Best 60 FT street tires 1.930
Best MPH street tires 99.29

 

I think you sure are about to waste a bunch of money.
the runners by themselves wont do anything for you.
you can make your own cold-air induction.
TES headers are cheaper and work well on 305 engines.
Cat-back exhausts do very little good if you're planning to keep a CAT anyway.
With all that money you could easily put together a 383 bottom end that will outperform a 305 with triple the amount of modifications you're planning.

but if performance isn't your bottom line and you want to spend the money, then I'd venture a guess at mid 14's with those mods.

 

My main goal is to get a reasonable amount of power (13's would be nice) and keep the 305 in the camaro for a long long time

 

They'll also rust a hell of a lot faster.

Depends on your setup, some people see up to 3tenths off their 1/4 with a good catback. But like I said, depends on your setup.


Any idiot can take a bigger engine and drop it in for more power. I guess that explains a few things




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91 Formula
305 TPI 5speed
1LE/G92/WS6

Paxton 6# SN92 polished kit, Ford SVO 24#injectors, Crane AFPR,SLP airfoil, ported/polished plenum, March alt. pulley,Crane Gold 1.6rrs,MSD coil,MSD6AL (5400rpm limit),Holley 9mm wires,Ac delco R43ts plugs,stock chip,Bosch O2sensor,SLP 1 5/8" headers,SLP catback,shortened shifter,3:73s w/Auburn posi,180* t-stat,JET 195* fan switch, Macewen white face gauges, Autometer gauges, Zoom hi-performance clutch.

 

the formula, which mods would be the best bang for the buck? Are there any cams or heads that go well with it? Thanks for all the suggestions so far!

 

Jono,
F*ck all the parts you listed.All they will give you is a few 10ths.
Go out and by NOS kit 5151 for $500 install it with the 150HP jets.Take it to the track and run 13sec passes all day!
If you have $300 more,buy cranes 1.6 gold rockers which will give you about .030 more lift on the peanut cam,putting you deeper in the 13's.
Nitro Don


[This message has been edited by Nitro Don (edited March 24, 2001).]

 

I wouldn't recommend nitrous, it's not constant power anyway. "hold on, i cant race you today i forgot to fill my bottle"

Jono, make your own cold air induction, get the torque converter, headers, don't worry about the hi-flow cat, and a good catback.

Also, what gears are in your car? For heads and cam..look at Comp Cam 08-304-8. There's a guy on here with an 87 T/A TPI 5.0. He was stuck at 14.4. After putting in the Comp Cam he hit 13.9s. He had just bolt ons. Heads..you could find a pair of used corvette aluminum heads or buy World Products sr torquers from Jegs.

Or....you could buy an Ati Procharger blower for $2703 from Excessive Motorsports. Do you have enough money now for it?

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91 Formula
305 TPI 5speed
1LE/G92/WS6

Paxton 6# SN92 polished kit, Ford SVO 24#injectors, Crane AFPR,SLP airfoil, ported/polished plenum, March alt. pulley,Crane Gold 1.6rrs,MSD coil,MSD6AL (5400rpm limit),Holley 9mm wires,Ac delco R43ts plugs,stock chip,Bosch O2sensor,SLP 1 5/8" headers,SLP catback,shortened shifter,3:73s w/Auburn posi,180* t-stat,JET 195* fan switch, Macewen white face gauges, Autometer gauges, Zoom hi-performance clutch.

[This message has been edited by theformula (edited March 24, 2001).]

 

Wow that sounds interesting, I'm a poor university student but I will have quite a bit of money to spend in a few months (full time summer job), these suggestions are great, I really like the cam/heads, headers,catback, air induction, torque converter route, is the supercharger safe on stock internal parts? Also how much hp/torque will my rear end handle? So many questions!!

 

85's didnt have the peanut(LG4) cam.They had the L69 cam.Here are some of the mods I would do to your 305.

Edl.1 5/8 TES headers
gutted cat
Edl.catback
ported plenum
airfoil
AFPR(46psi)
t-body coolant bypassed
K&N filters
homemade cold air
Underdrive crank pulley
New plugs,wires,coil kit,module
Mobil 1
160/180 t-stat(depending on climate)
Ed wright fastchip
torque converter/shift kit

Those are simple mods you can pretty much do yourself(besides maybe transmission)and should put you in the mid/low 14's.You can get the SLP stuff,but they are a little more expensive then the Edelbrock,and might not gain that much of a power difference on your 305.They will last longer though.If your tranny has alot of miles(more then 50k)I wouldnt rush in putting a TC/shiftkit in it,it may cause it to fail sooner.Do the other mods,then wait till you can have a complete rebuild done.

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1990 Trans Am GTA,Black/Black Leather,350,auto 3.23,Dual Cats,
SLP Package,SLP Torque Converter/Shift Kit,Fastchip,GSC's
G-tech 0-60 5.1 1/4mile 13.6@104
member www.transamgta.com
Previous Thirdgen
1986 Camaro IROC-Z

[This message has been edited by black5.7GTA (edited March 25, 2001).]

 

Thanks for the info, I've decided to hold off on the heads and cam until my engine needs a rebuild(could take a while), the IROC is in amazing condition not a rust spot to be seen my car has about 85,000 miles on it and it came with 3.42 gears. I have decided on the following

-hooker catback
-hi-flow cat(i need it for emissions)
-slp or hooker headers
-cold air
-chip
-airfoil
-K&N Filters
-the free mods...

hopefully this will give me a moderate power increase and hopefully mid 14's but i can see high 14's with ease.

Thanks for the suggestions I think these are good choices

THE IROC

[This message has been edited by Jono (edited March 26, 2001).]

 

Jono...

I have a 3" Random Tech Cat on my 86 TA...not only does it give you a bit more power, but makes the car sound really really nice. I put a 2 chamber flowmaster on there before i did the cat, and it sounded good. After the cat went on, it sounded like it had headers. Good luck.



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1986 5.0 TPI Trans Am
Random Tech Cat
Two Chamber Flowmaster Muffler
Megs Custom 4.5" Stainless Steel Tips
1999 Grand Am GT In-Dash CD Player w/Equalizer(fits like '86 original)
5% Tint On Rear, 35% On Sides

 

modifying our cars seems to become a never ending process. you can do all the exhaust, intake and other free mods but they aren't going to give you the power you are looking for. they will help but you won't be satisfied for very long. so i suggest you do the exhaust, intake and free mods and save the rest of your money till next summer when you have even more money. if you build a stronger motor, you will fry your stock tranny, your open rear end won't hook up, and even if it did you may have traction problems anyway with the stock stamped rear control arms and torque arm. i suggest thatu wait until you have the money to modify the car to handle the motor. build the suspension, rearend, and tranny first, then go for the motor. if you build a hot motor and leave everything else stock, you will have nothing but breakage and traction problems. i am in your exact position, i'm in college too but i have no money to spend. i have an iroc i did all the cheap and easy stuff to and am not happy with high 14sec timeslips. when i have the money i will mod the tranny (T-56 6speed) and suspension to handle the motor i want. that way when it is time to put the motor in, the car will be able to handle it and i won't have to worry about anything breaking. i see all the time guys building hot motors and then get pissed when something breaks and they can't drive the car. learning to modify a car in the right order is one of the hardest things,we get all caught up in going fast and all we think about is the motor. but we need to realize that there are many other things on our cars that need help before it is time for a hot motor.

 

theformula
Member
Posts: 1017
From: delaware
Registered: Jul 2000
posted March 26, 2001 10:39 PM
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I know this is a common problem in turbo cars. But what about supercharged cars? Does cold weather really mean lower ets? Does hot weather mean less boost?
Does anyone here boost higher in colder weather VS hotter?

I for one notice my car hauls more **** in colder weather. I can get wheel in 3rd gear when it is cold outside. Can't do this on hot days.

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91 Formula
305 TPI 5speed
1LE/G92/WS6

Paxton SN92, Ford SVO 24#injectors, Crane AFPR,SLP airfoil, ported/polished plenum, March alt. pulley,Crane Gold 1.6rrs,MSD coil,MSD6AL (5400rpm limit),Holley 9mm wires,Ac delco R43ts plugs,stock chip,Bosch O2sensor,SLP 1 5/8" headers,SLP catback,shortened shifter,3:73s w/Auburn posi,180* t-stat,JET 195* fan switch, Macewen white face gauges, Autometer gauges, Zoom hi-performance clutch.


theformula wins the Einstein racer award for this brainy question in the power adder section. Yeah I would take his advice for sure.

 

Jono, I recommend the SLP catback over the hooker. It's stainless steel . Also Borla is good if you have the money , kind of pricey.
Good luck



[This message has been edited by theformula (edited March 27, 2001).]

 

what does that have to do with the subject of this topic?

 

I was wondering the same thing

Superz, the main thing is not to make it go superfast just give it a little more boost that it should have had in the first place, in a few years I'm going to be buying a new car most likely a new f-bod(when they return) or a C6 Corvette. That will be my go fast car, this car will just be hanging around as many wished they had kept their 69's This first year IROC will be passed on through the years and I'm pretty sure will be a nice thing to have in 10-20 years! Anyways thats where I'm coming from so its not all about performance, and I'm sure the tranny/parts can handle a 14-14.5 sec car as its not too much power but just enough for cruising around.

 

You got me. I'd just ignore him if I were you