I'm driving home from work, and a jeep cherokee flies by. We meet at a red light. Turns green, we both punch it, I hang with him up to second gear shift, and then he just keeps moving ahead.

I have a dual snorkel waiting for AIR removal, and headers to follow. There is a new catback on it, other than that, stock.

I'm not looking to smoke everything, but it would be respectable to be able to take, or at least hang with, a Jeep Grand Cherokee. What does the LO3 need? Car has 108,000.

 

a new motor?

seriously though what year? I know the recent models are somewhere in the low 15's so although they should take a stock 3rd gen in the 1/4, I would of thought your catback would of evened it out but I guess not.

The headers will probally but you right with him if not a little faster. If not just keep going down the list.

1) exhaust
2) intake
3) suspension
4) heads/cam or a new engine...

now that i think about it they are fairly close performing vehicles.
I think the high output 4.7l? v8 is around 250 horse and i would guess around 300lb of tq but they also have a bit more weight to carry....

 

Needs a 350!

There's just not alot can be done to the TBI without spending almost as much as a 350 swap would be. I have a 1990 RS with 305 TBI and a 1992 I just swapped a carbed 350 into. The 350 is much nicer.

On the 1990 305, I have ported/polished #416 heads, larger intake valve, vacuum adj FP regulator, LT1 cam, headers, gutted cat, carb intake with adapter, 3.08 posi rear, etc. etc. - about $1500 in mods. I spent months trying to get a chip programmed so the ECM didn't choke, and the best I have is the same power I started with - all because the ECM chokes on the mods.

The 1992 RS I have a 350 carbed, 10:1 dome-top pistons (to help make some compression with the crappy 76cc chamber heads), headers, gutted cat, and 3.42 posi rear with disc brakes. I spent about $2000 on the 1992 mods, and it's a world of difference!

Don't get me wrong - the 305 has power hiding in there - I can feel it - but I can't get a chip tuned for it, and I can't do it myself. The ECM sees all the new airflow, and dumps massive amounts of fuel in to compensate, and it's really rich and choking the potential power my mods created. I just lost my emissions requirement here, so I'm in process of slapping a carb on it, scrapping the ECM like I did in the 1992, and I'm sure she'll feel alot better.

That Jeep (assuming its a 4x4) is a V8 most likely (Grand vs. plain old Cherokee) - but the 4x4 would give it 3.73 or better gears - it's gonna scream 0-60mph because of the rear gears. Your stock TBI has a 2.73 gear - great for mileage, sucks for gettin' out of the chute.

For the $500 difference spent on the 2 cars, the 350 was way more bang for the buck!

 

lol it just sounds funny a camaro AKA sports car geting take out by a jeep AKA= SUV=off road im just playing

 

Dewey316 ran 14.5 with headers, full exhaust, open element and chip work. All of those mods can be used and or transfered to a 350. Check out the TBI board for more info. Making these cars go fast isn't that hard nor is it expensive.

 

EXACTLY why I began this post.

And SHifty, I read the TBI forum all day long at work, and I know all about teh bolt ons, I was just wondering what it would take to beat that stupid jeep grand cher (and be respectable, at least to me).
And I am extremely glad to know that most of my 305 parts will carry over to the 350.
I will continue doing searches for the great info.


THanks, I feel optomistic!

 

Simple bolt-ons will get you past the jeep, however if you want mid 14's and lower...seriously consider a new heart.
/gears, exhaust, intake and suspension will only take you so far...

 

I don't get these threads.

"My 20 year old technology is getting beat by a new truck." Thats like wondering why my PDA has more processing power than a computer from 1987. I love the 305 but its not a performance engine either, especially with the TBI (once again, a nice design but its not all powerful). You've got a heavy car with minimal power at best against a newer strong running- presumably decent powered SUV. Admit defeat, get a 350 with cam, heads, full exhaust, etc, find him on the road again and show him what's up.

 

If I can pull a 15.28 @ 96 with a 2.12s 60' out of this, powered by a HOT 305 TBI, I sure hope that you could wax a SUV with one in a 1,500 lbs lighter car.





Don't let the stock looking appearance fool you.

305 Bored .040, Heavily Ported 081 305 TPI heads(1.9/1.60 valves, .550" lift compatible), Huge Roller cam, Bored Edelbrock Intake, Front Pull 454 TBI, Cast Iron Exhaust manifolds,Single 3" exhaust(adds torque without signifigantly affecting HP), Dual 2 1/2" cat-back exhaust, Flowmaster 70 series Big Block Delta Flow Muffler Single in/Dual out, +alot more.

 

I didn't ask why did I lose.
I asked what I can I do to bring it up to modern speed.




Someday.

 

How about something like this:
remote tubro

It seems like you just need a turbo (300 on ebay), misc parts, and some fabrication time.
I'm completely new to power adders, perhaps I should put this in the power adder forum?

 

i have a extra gm-4 turbo (off of a 6.5L truck) lets talk pm me

 

My mom drives a 2000 Cherokee with the V8 and it could beat almost any 305TBI off the line, even with mods...its all wheel drive so it gets a good jump on ya...I bet it would take a lot of 350s off the line to...

 

My 96 GCL which recently found a new owner was a nice little hot rod SUV. The little roller camed 318's can fly with absolutly no modifications especailly how they are geared and the all time 4wd keeps them hooked up nicely. I dident dig the 5K rev limiter too much.

Headers and a cat back system would be the first place to start, of course 2.73's arent ideal gears for a sports car.

 

A rear end with 3.23 and disc breaks is want I'm looking to do first. Drums suck.

 

Am I the only one here who thinks the headers, dual snorkel, and adjustable fuel pressure regulator would put him ahead of a Grand Cherokee? This can't be to tall of an order for our "dinosaur" Chevy enines, unless he races you for about 50 feet in 4 wheel low

 

Yes!

These Jeeps really arent much heaver then an F Body. The engine is larger with a superior injection system designed by Holley and the heads used on these engines are freaking sweet. Only bad thing performance wise is the exh system cant be modified except after the Y pipe and since they used a starter on the oposite side from the Dodge counterpart, headers will not clear.

 

Its kind of funny when a jeep cherokee can beat a Camaro

 

Wow who knew Grand Cherokees could contend.... well I guess SSC did I'm going to go drive one of these things now. As a note the straight six Grand Cherokees I've driven SUCK, but I drove one Cherokee classic with a 4.0 HO in it and it seriously HAULED, I was amazed.

 

My Jeep has a 4.0 HO and its slow as hell.

 

Well the new body style Grand Cherokees are availible with the Hemi and the 4.7 V8.From '93 - '03 you could get anything from the 4.0 HO I6,4.7 V8,5.2(318)Magnum or the 5.9(360)Magnum.If the one you dealt with sully had TSI badges it had a 5.9 in it with 245HP and had a 0-60 under 7 seconds.And that's not taking into account if wasn't stock.

 

I agree with this post. Technology has come a long way, and for one you dont even have a performance 305. Its a 170 hp engine in a 3400 lb car. Thats why you lost. The newer V6 jeeps make more than that. So to win you are going to need exhaust,intake,filters,chip, and some good tires...later

 

I'll repeat myself:


I didn't ask why did I lose.
I asked what I can I do to bring it up to modern speed.

 

And I am going to repeat myself. You need exhaust,intake,filters,chip, and some good tires.

 

I read that part!

And I'm workin on it, thanks

 

Ya, you need a new motor. It's really easy to do, you can get a 350 or a 400 core for like $150. Don't put any money into that motor, because its probably old and tired anyways. The RS is a chick car, they are wicked slow but look cool, good for a commuter or cruiser, but if you care about speed you're gonna have to step up to a better block and heads.

 

I use it for a commuter. The deal is instead of saving to by a new car like the new stangs, or maybe the new maros, I'd rather "update" the rs. I'm still in college and I am not going to overhaul the car until I graduate, but for the time, I want to give it some more muscle (at least enough to beat an SUV)

 

In stock form the l03 is not fast by any of todays standards. BUT just the the lg4 simple bolt ons can really wake up the l03. First off a cam would be huge for that car beacuse as of now you have that tiny lg4 cam in there,and you also could get some better flowing heads but those mods are kind of a pain. Second the exhaust manifolds in that car are just paper weight. Same story with the intake manifold and exhaust its very restrictive. So with those mods alone you should have a quick car. Dont forget about the gears. Go with 3.42's or 3.73's cause it most likely came stock with swamp gears. You can also modify the tbi unit by getting a Dual snorkel air cleaner setup used on the 83-86 L69's if you dont already have one. Then get a chip and some good tires and you will be cooking.


http://www.goingfaster.com/spo/modthel03.html

 

That goingfaster article convinced me 10 months ago to buy my RS with TBI.

For gears, is 3.23 okay? I've been looking around and there are a good number of 3.23 with disc from 91 92 z28's.

 

ehhh not really. Those gears work really well with the tuned port injection powerband, but for TBI id get at least 3.42's. I had 3.23's in my old car [lg4] and they sucked. The 3.73's really woke up the car.