i am going to be getting my hands on a tci tc...




now i have a few questions...

i believe my car being an 84 and having the original motor still has the same factory year transmission...so the crank pilot should be 1.703?...is this referring to the snout of the tc that slides over the splines on the input shaft?....


the convertor is a 10 inch with an anti balloning plate on it....i think its a super street fighter...it says i have to drill holes for 7/16 bolts....just drill through the flewplate?

i dont have the serial number off the tc atm but i will later today...i think i wrote it down wrong when i looked at the part yesterday

motor is not stock with a cam and full exhaust,carb,intake, shift kit,3.73s and has run to date 14.4@97mph with a 2.3 60ft...i am hoping this helps get the car into the 13s if i can get a good 60, mid 13s

 

Most 84's had a 27 spline input shaft. You need the converter to match the shaft. That converter in the pic does not appear to have an anti balloon plate on it.

 

3800 stall speed is awfully high for a mild motor like you've got.

 

if you look at it in the base on the picture you can see the plate itself



from what i understand about convertors is they will act different for each application...depending of weight of the car and other variations from set up to set up...it will probably flash alot lower

here...i found this...



mportant Factors That Affect A Converters Stall Speed

Vehicle Weight
Vane/Fin Angle
Horsepower
Impeller to Turbine Clearance
Powerband/CamShaft
Stator Design
Torque Rate
Converter Diameter
Gear Ratio

These can be some of the biggest questions you have when looking for a converter. The best solution to any of your questions is to speak with a qualified technician at a high quality company.

 

You're right, less power means it'll flash lower. It'll be super in-effiecient. You need to match the converter to the engine and set up the drivetrain accordingly or else you'll be wasting HP.

 

i am going to call tci monday and see what they think before i slap the cash down for it

 

Anti-ballooning plates are also on the top of the converter, around the hub. I see none there.

 

the person selling it mentioned it having it, and its on the flexplate side of the tc


edit:...i guess it doesn't matter because i looked up the part number on tci and its for a 30 spline count 700r4...i have the older version so i am not wasting the cash


it says 1984 1/2...what number would i need to find on the trans to see if i would be able to use it?

 

Just trying to help. Your call.

 

and its appreciated...its a crappy picture and hard to see the bottom part of the part

 

Some say the 1/2 way through the model year they changed to 30 spline. My atsg manual says it happened late in the model year. I do not know of any way to id the spline count externally. Every 84 I have personally seen had a 27 spline though. Physically counting the input shaft splines are the only way I know of to positively identify it.

 

stupid gm...i am looking through my shop manual and i am probably going to have to crawl underneath the damn thing too

 

You can check the code on the pass side of the trans, just above the pan. If it starts with any number other than 4 it means it has been swapped out in the past. 4 means 84 model year. You may get lucky and see a 9, or basically any number from 5 and up. That would indicate a later model trans and guaranteeing a 30 spline input shaft. Long shot but worth checking.

 

even if i get the 4 its a long shot...i hope i can find out whith the serial number wether or not its a late model year trans...my vin number is higher up so it might just be

1G1AP87G5EN180211

the engine matches the car also with the vid on that so i am guessing it still has the original trans, but who knows

 

code i found was 4yg165at

 

Yep, the book says that it is a 1984, 5.0 f-body trans. Probably the origional one. Maybe you will get lucky and have a 30 spline. The 30 sline stuff is much more common and allows for a bigger selection in the aftermarket.

 

is the "165" part of that code good for me or bad?

 

That is the julien date. Unfortunately, it will not positively guarantee a 30 spline. My books all list gm's changes by the julien date. Not this time though. It simply says"late in the production year they went to 30 spline"

 

i found out my car was built in june...would that help?