1988-305-tbi

Who would win in this race, my buddys has a 96 probe gt,5 spd, 165hp/ and he's telling me he can woop my ***. both cars are in good running condition with fresh tune ups. the probe is stock, with a cold air intake. My car has a brand new suspension about 7,000 miles, new rebuilt 700r4 with shift kit and 2k stall. I have an open element, ultimate throttle body+ spacer, edelbrock 1 5/8 shorty headers through a straight pipe with a 3 inch flowmaster cat back. Also have a tbi stage 2 chip installed, the probe also has a pretty fresh suspension. I' pretty confident that i'll win but what does everyone have to say?

ShiftyCapone

iTrader: (7)

I would ditch that chip in favor of the stock one but you should still win.

Nic

Not trying to hurt your feelings, but umm...you'd probably lose. He's got an easy high 14/low 15 sec. car if he can drive at all.

mrpopo573

I'm going with Capone. You should win.

I've beaten my local probe enthusiast and you have a better exhaust and overall setup than me.

89IrocZ350TPI

my buddys has a 96 probe gt,5 spd, 165hp


Come on now... a 96 probe gt. You should win

91ChevyRS

Not only does your car handle better but you should easily rape him, long shot with all those mods running you should have an easy 230hp....take him down

Maverick_IX

Some of those mods outshine the others...

A 3 in exhaust, will do very little with a 305 and stock heads. Headers/Exhaust always help, but its a proven fact that a 3in exhaust(or too large of primaries on your headers) with that setup is overkill, leading to "stalls" in the exhaust flow. The idea isn't to elimate ALL your backpressure, most engines need an OPTIMAL amount in order to provide peak power. (depends on compression as well)

I highly doubt that you are putting out 230hp especially to the ground.

BUT, you SHOULD take him down.

Its all about traction, especially considering Probes are FWD.
New Suspension should = Better traction is everything if done right.

FWD is FWD no matter how good of suspension the force(weight) ends up in the same place.

ShiftyCapone

iTrader: (7)

LO3's with a full 3" exhaust typically see an increase in VE by roughly 10%. A full exhaust does wonders for a stock 305. His set-up is far from overkill. If anything he should look into chip work because of the drastic change in VE. LO3's with a full exhaust are realistically out of tune and the ECM cannot correct. He should be putting roughly 170 to 180 at the wheels with the mods he has and even more with chip work.

84L69TA

LOL, ok. I dropped .96 off my ET with my old 83 TA. Bone stock LG4/auto went from 15.97 to 15.01 by putting on Edelbrock headers and 3" y-pipe, with a 3" Chokemaster catback. Sorry I forgot, I also had 3.73 gears both time the car was run.

1988-305-tbi

about the chip it's a stage 2 tbi chip from tbi chips . com, and ive switched back and fourth from the stock prom to this one, the stock prom throws code 32 on the freeway, stage 2 doesn't, plus i noticed a big increase in torque from the 3-4 k rpm range,and a much smother iddle. it's like night and day, i know a custom tune would be 10 times better but it still gave me a pretty notitcable increase for 100 bucks. he's got alot of buddies with probe gt's, it' like a car club. so i've been in coutless probe gt's i've raced 1 foxbody/5.0/convertible/auto stang, stock. he left before me but i caught up with him and statred to pull at the end of first but i had to shut down cause i had to enter the freeway, and he was goin straight. i've raced about 3-4 irocs/ driving around town, lost to 1 of them. i only talked to one guy i lost to, i followed him to a gass station. it was an l98 with headers and 3.23 gears, no wonder i lost. the probe should weigh around 3200 with him in it. i can't imagine how a car with 165 hp/ 130 ftp of torque can run high 14's

1988-305-tbi

about the headers / exhaust being over kill. before i installed the 3 inch exhaust i had more torque down below 2k, after the install i had way more torque from 2500- 5000, so i'm pretty sure it was a worth while trade, and the headers really made a big difference from 3k rpm and up. before the complete exhaust my car would pull to 100 mph or so after it pulls stronger at 120 than it did at 100 before the exhaust. the headers and full exhaust really woke this car up, def. not overkill p.s. the y pipe is 3 inch. the catback is actually a 2 3/4 cause the shop i i went to tried to screw me i went to them because they were the only shop in town that said they could install a 3 inch catback for me that day. i got my flowmaster crossflow muff. from the junkyard for 13 bucks. went to shop dropped it off then they call me to pick it up. so i drive it home, get under the car, to check out there work, the pipeing looked small so i called them about it and the guy freaks out and starts yelling at me he said i couln't find a 3inch for it so i put on a 2 3/4, i asked him why he told me it was a 3 inch, even after it had been installed and he new better, he told me to come back and pick up my money. so all in all i got a 2 3/4 flowmaster cat back for 13 bucks installed, not bad

Nic

I've got a couple friend's that are really big into probes. Seen it done with my own two eyes. Never would've imagined that little Mazda motor could do what it can do before I met those guys.

Maverick_IX

Everyone always likes to argue rational statements with the end results.

I agree that the exhaust should wake up the car a great deal...

My only point was that a certain (if very small) amount of backpressure is needed for optimum performance, I am DEFINITELY not going to argue that this is not a better setup than the stock (that would be ignorant).

I am just saying the bigger does not always equal better.

Depending on mufflers and y-pipe configurations a smaller pipe could perform just as well...maybe even better on a smaller displacement motor (especially if the PROM is not tuned).

(Turns out his setup uses 2-3/4 pipe anyways)

You can't always argue that it was the BEST setup just because it was a GOOD setup.

Plus, I only argued the pipe diameter, not headers... You can LOL all you want but next time to run into a RS Sleeper with a nice suttle exhaust and he smokes you, scratch you head and ask how can he be so fast when I am SO MUCH LOUDER!!!

I ran into a kid running true dual 4 in exhaust with no H-pipe on a near stock 305, and he was convinced that his exhaust would allow him to smoke IROCs, when really all it accomplished vs a smaller cat-back was making it un-earthly load.

Like I said, wasn't trying to argue, just saying bigger or more $$$ does not always better...

DuronClocker

iTrader: (1)

Umm did you ever see the thread where a lowly V6 gained like 15hp from a 3" exhaust? They thought that it'd gain even more with a 3.5". A 3" is by no means overkill for a 305.

If a car is tuned right, the less backpressure the better. Stock tunes usually rely on a the backpressure of the stock exhaust to keep the engine from backfiring when letting off the gas. Sometimes a stock car with a cat-back will backfire upon decel. Once tuned, this goes away and there is no problem. The less backpressure the better. Loss of scavenging hurts performance, but this is typically because too large of a header primary, not so much a problem with too large of a cat-back.

gatoRS92

It might be close, but I would put my money on your Camaro. I drove my friend's 5-speed Probe GT (either a '96 or a '97, don't remember) and it was decently quick, but no faster than my RS. If you get good traction, he should be staring at your taillights all the way.

Speaking of Probes, what was the difference between the Probe GT's and the GT 24valve? Was the 24v a completely different package, or was it just the same motor as the GT and just called something different depending on the year of the car? I don't really know how to word this question but that's the best I could do.

As for the whole exhaust debate, I really don't think there would be much of a difference between a 2 3/4'' and 3'' catback on an LO3. With the mods I have, I should definately get a chip burnt, but seeing as how I'll be replacing my LO3 at some point in the near future, I'm not worried about it until then.

two60two

as far as i know all of the second gen probe GT's were the 24v V6 and the first gens were just called GT....and had a turbo 4

1988-305-tbi

update.... i still haven't got around to tunning up my car, and my new trans is still messed up, it slips in 3/4. my friend with the probe just did a complete tune up on his car. my cars been pretty damn slow lately .but i decided to do a little test run from a stop to 70 against him. I pulled about 3 car lengths in first gear and 1-2 more in second, it was no contest. i can't wait to get it running good again

CHEVY_EATER

Yep, I know someone that has ran 14.8@96 with his a 200,000 miles 94 Probe GT. It has headers and intake, I think thats it. But the motor smokes and still has the original clutch! eeeekk
http://www.dragtimes.com/Ford-Probe-Timeslip-7090.html

Thats the time and info.