Hi all, I'm new to the forum and have my first (probably of many) question. I bought the car a few months ago.. the car didn't shift into overdrive.. my plan is to drop a 350 in....when I pulled the 305/tranny it looks like the tranny is a turbo350.. I was under the assumption all monte SS would have had the 200R4... my question is did the forth gen montes come thru with turbo 350???this would explain the lack of overdrive....lol

 

Welcome to the forum...

I would call you by name but I see you haven't filled out your profile yet.

About your question...

Its obvious someone in the past had changed out the trans...

1984:
The SS was a hit not only in the car-buying public, (starving for some power after the hefty emissions regulations of the late 1970s) but also in NASCAR competition, where it continued to be a winning body style after the 1984 season successes. Production picked up, and 112,730 sport coupes were sold as 1984 year model coupes. An additional 24,050 had the SS option (with an 180 hp (130 kW) 305 V8 that saw a 5 hp (3.7 kW) boost from the previous year), having an asking price of US$10,700 (£6,890). The Monte Carlo SS was available with Strato bucket seats and floor console as extra-cost options for the first time in place of the standard split bench seat with armrest (the Strato buckets also returned as an option on the regular Monte after a two-year absence). The regular Monte Carlo came standard with a 125 hp (93 kW) 229 CID V6 (231 CID V6 for California) and a 165 hp (123 kW) 305 V8 was optional. Available for the last year in a base Monte Carlo was the 350 CID diesel engine, and there were only 168 manufactured. All engines for 1984 got the three-speed automatic transmission with the exception of three SSs at the end of the 1984 production run that received the Turbo Hydramatic 200-R4 transmission with overdrive.

In 1984, there were a limited number of Monte Carlo SSs made in Mexico, for Mexico sale. The differences are many in the Mexican to US/Canadian SSs. There was no rear spoiler. The rims are 14" checker style, an option on the base Monte Carlos in the US. The side mirrors are different style and black. The interior is that of a Grand Prix, in blue. The engine is a 350, 265 hp (198 kW) (unconfirmed) and 350 lbf·ft (470 N·m) of torque (unconfirmed), and got a 4-speed manual with Hurst shifter.






Hope this helps !
Thanks for joining the MCF Family Looking forward to some pics of your new Monte Carlo.
Pls feel free to join the conversation in our daily blog!

We look forward to hearing more about your new ride... Mods.. etc..

 

Welcome to the forum, I don't know anything about your year of Monte's other than they can be built to be quite nasty...

 

thanks guys.. I was told by the original owner motor and tranny were original to the car... there is no overdrive indicator on the gear selector.. and looking at the Haynes manual the pan is definitely the thm250/350... kinda has me shaking my head... but thanks very much for all the info.. And my name is Brian.

 

Hi Brian:
Nice to meet you.

Since your pulling the drive line out of it...
Once you split the motor and trans.... on the back of the block by the bellhouseing is the original motor numbers....

Check those numbers against the id plates to see if in fact it is all original.
Maybe... It was special ordered that way also?
That's the only way you will really know for sure.

Also you may want to check in the springs under the front seats and see if the build sheet is there since it maybe a "Special" ordered Monte Carlo..

Keep us posted!
Thanks Brian!

 

Welcome to the forum!! Sadly, I can't confirm or deny the setup you are finding.

Stick around and share some pics of this project

 

The 200R was not available until the 1985 Monte Carlo SS. So you probably have the original drivetrain in your 84 SS.

 

X2 the overdrive was not avalible until 85 it has 3.73 rear gears.
The 83-84 montes have the th350c and has 3.42 rear gears.