New to the Game

Welcome!

By registering with us, you'll be able to discuss, share and private message with other members of our community.

SignUp Now!

CityBoy

New Member
Joined
Jan 23, 2007
Messages
2
Hello all, I was hoping you could help me out. I have the chance to pick up an 84 GN. I come from a world of carbed small block chevy's and have no idea what to expect from this car. My last car was a 1988 Monte Carlo SS that I swaped the 305 for a 327, and the 327 for a 355. I have always loved GN's but have a speed bug to keep happy also. I see alot of 86-87 GN's but rarely a 84-85. The seller claims the car is %100 original but is far enough away so I can't test drive it and think about it. Any input on orignal 1/4 mile #'s or horsepower would be appreciated. I am not against putting the work in to make it fast but I still want to start with a good platform. Thanks in advance.:D
 
Stock- 200 HP and a 15 sec qtr. Stock 86/87-240 HP 14.3 quarter. The 86/87 is easier to make it faster and a 84/85 harder. You will pay more for an 86/87 but the cost of mods are cheaper. The 84/85 is just the opposite. If you are serious racer go with the 86/87- more options. You can get an 84/85 to go fast but we have limits due to the cost of the mods. My 2 cents. Brad
 
Hello all, I was hoping you could help me out. I have the chance to pick up an 84 GN. I come from a world of carbed small block chevy's and have no idea what to expect from this car. My last car was a 1988 Monte Carlo SS that I swaped the 305 for a 327, and the 327 for a 355.

I have always loved GN's but have a speed bug to keep happy also. I see alot of 86-87 GN's but rarely a 84-85. The seller claims the car is %100 original but is far enough away so I can't test drive it and think about it. Any input on orignal 1/4 mile #'s or horsepower would be appreciated. I am not against putting the work in to make it fast but I still want to start with a good platform. Thanks in advance.:D


As posted by Brad.
Figure our your long term goal, balance that with your budget, and make your decision from there. Also, post your location. Someone may be able to help you look at the car to make sure you get what you expect.

Your request for HP numbers;
Focus on the torque numbers and area under the curve as well, not just peak HP numbers.


PS (I have to ask)
Did you ever run against a Hot Air TR in your SS with the 355?
How did you do? :rolleyes:
 
Are you set on an 84/85?

I don't know much about the hot air cars but I do know some people who run low 11's with theirs. They have a larger tubo and alky but it can be done.

Do you have to buy now or is there time? I would suggest reading up as much as possible and checking out gnttype.org.

If you have the time you might seek out some people with 84/85 and 86/87 to see the cars in person and go over the differences.

I ran a friend who had a ZZ4 355 crate motor in his Monte SS (race tranny and 373 rear gears) and I was substantially quicker in my mostly stock 87 GN.
Not really relevant to your 84 question but thought I would toss it out there in case your Monte was similar.
 
Renthorin- I qoute " I don't know about Hot airs but...." I know about hot airs and your advice only confuses new members- Please only comment out of knowledge rather than gossip. Brad
 
I dont think there is a problem with what he said. He knows a couple of guys with fast hotair cars, but doesnt own one personaly. For one, thats giving props to hotair cars and he also was honest (not misleading IMO). Plus he gives a couple very good suggestions. Not getting on ya Brad ;) and you know Im not trying to start anything, just my .02 cents. As long as its not someone trying to be a smart ass because they have nothing better to do, I like it when 86/87 guys stop by and participate in our forum if they feel they have some worthy input. On numerous occasions over the years I have given my helping hand to 86/87 guys on this board, and I seem to do it on a weekly basis away from the internet. There ARE those out there that realize that there is not that much different between the 84-87 cars. Makes me just feel all warm and fuzzy about our TR community :)

Anyway, I tell anyone thinking of buying a TR to do as much research as they can on the cars. Performance, production, differences, etc, etc. Search on this site. Check gnttype.org which is basicaly the Encylopedia site for these cars. Dennis Kirban has always been pretty astute to the ins and outs of these cars and may have some info at his site?? Not sure.
I always tell people that '87 TRs are the most popular and sought after. 86 & 87 are the same performance wise. These years are the easiest to mod because aftermarket parts are plentiful. 84 and 85 are more rare. The 84 GN is the rarest turbocharged GN at 2000 produced (87s were well over 20,000). Not sure how much more expensive it actually is to mod a hotair [un-intercooled 84/85], (will depend on your goal I guess). In the past I always heard this comment (and more) from 86/87 owners that just didnt know any better (boy, Ive got a few stories). Few years back it may not have been this way but now it seems that some hotair owners have fallen into thinking the same way. Parts are no less expensive for the 86/87 cars. 84/85 owners are just lacking in availability of some aftermarket parts [thinking about it, aftermarket downpipe is really the only main component that I can think of ??]. This is always the case with a more rare car. Especially when the car ('84) was the hottest thing out there when it came out but then all of a sudden after two runs an improved/evolved vehicle is released and the hype just doubled. Plus it gets mass produced.
The '87 (14.5~ et) as originally tested was over a second in the 1/4 faster than the '84 (15.8). Not much is needed (good tuning #1) to make a '84 as fast as a stock '87, and thats still with no intercooler and smaller stock turbo. Oh yeah by the way, the '86-'87s have [if you havent picked it up] intercoolers, bigger turbos, and run more boost from the factory (few other upgrades too), so no wonder they are a bit faster. Not much faster though considering, IMHO. With that being said, of course not much (good tuning #1) is needed to get a 86/87 car faster as well. Decide how fast your trying to go. 12's arent hard for a 86/87 car to obtain. They arent really that hard for a 84/85 car either as long as you plan right. Faster than 12's for a hotair car is where it is definately much much easier with a 86/87 car. Mostly because of ease of upgrading turbos and such which is related to what the different engine configuration allows. This is all figuring street tires by the way. If you like to use slicks then take that in consideration too, because the #s will be that much easier to obtain.
As stated you should educate yourself on the cars first so you know exactly what you are getting into. Tuning the cars is always the key, much more so than throwing parts at it (and especially when youve thrown parts at it). They are a completely different animal than a small block Chevy car. If you are not prepared they will become frustrating (still at times even when you do prepare), but when they are right there is nothing else out there like them [read up on tuning, here and in the General Tech forum].

P.S. in case youre wondering, it is possible to add an intercooler to a 84/85 car.
 
Renthorin- I qoute " I don't know about Hot airs but...." I know about hot airs and your advice only confuses new members- Please only comment out of knowledge rather than gossip. Brad

OUCH! I prefaced that by trying to say I am more familiar with 86/87 so as to avoid such comments but alas.

What I was saying is that hot-airs can be made quite fast as seen by the signature of the members I was referring to:

"85 Hot air running 11.58 at 115.75 with only 23 pounds of boost."

Sorry if I confused the issue Ryan...just trying to help.
 
WOW! That is alot of information. I really wasn't expecting anyone to answer in such detail. Thanks!
To answer a couple questions:
I didn't buy the '84 GN.
My Monte ran a low 13 1/4 mile at best, sad to say with a 50 shot.
I raced a couple of GN's with it and never came out on top, not sure what year they were.
And I'm on the S/W side of Chicago.

I think I'm going to stick with an 86-87 car for the platform. When I built my Monte i was young, had alot of time on my hands, and had no mortgage. After some thought, I'm not opposed to 84-85, espeacially if the price is right. I am desperately seeking a car w/ a straight body and unmolested engine. Any leads would be appreciated. Thanks again to all who replied!
 
84/85 GN is a good platform

You should expect a stock 84/85 to be a bit faster and quicker than
your Monte SS when it was stock with a 305. The turbo Buicks were always faster than the Monte SS and the Hurst Old Cutlass of the same years.
look at some old car and driver magazines and see for yourself.
They published the numbers when the cars were new.
In fact I belive the 84-87 GNs were faster in the 1/4 mile when compared to each Corvette of the same year. This will give you an idea of their performace stock.

Your choice depends on what you want to do with the car.
If you would be happy with some mods and high 12 second or low 13 second car then the 84/85 is a good choice. If you need to go faster then a 86/87 will be easier than a 84 to mod to do those times.

I personally prefer the interior of the 84 GN to the 86/87
 
Back
Top