8 inch Torque Converters

Why do all these Converter Companies not want to sell you a 8 inch?
Everyone wants to sell you either a 9 or 9.5.
Need a new converter and everyone try's to talk me out of one.

Whats the use going to be for.. car and weight.. is it a street car

Transmission Specialties has never tried taking me out of a 8 inch convertor. My last 3 have been spragless and I’ve been very happy with them. Ever without dyno numbers on my last convertor I told them I wanted 5800 stall and it ended up being 5760. Can’t beat that.

What one needs for a torque converter is def one of those “it depends” things.

It is application specific. Stall speed desired, power, stroke, gear, weight, intended use. With everything being big inch, big power, boosted, etc, these days, not many situations are right for that small converter.

I have been told good 8" cores are hard to find, and most new 8" converters are usings parts from ATI.
9.5 stuff is cheap for them to buy so easier to sell cheaper/or make more money.

I am buying another 8" right now

Originally most race converter company used the Opel 8 inch cores and built them for the tranny, engine and so on.
I've been told the 8 inch cores are no longer out there and not many company have any in stock to build them now
I've ran into the same thing in the last three years several times
There is a HP limit on how well any small converter will work, the bigger the core the more power it will take before failing is what I'm being told once you get over 900 HP
For real high RPM stall, above 8500 RPM, A1 says their 7 inch is the hot set up

All 3 of mine are 8”.... that’s what Lenny spec’ed for my small block

I've got 2 8's that I got from Stock Eliminator guys. One is a PTC, the other is a TCI. Pretty sure PTC will build you one. I know Edge will, and they are using billet covers now.

I have an 8" in a 727 in a street car. It works but it's pretty stupid. Fun though! I'm willing to sell it. Kevin at Hughes went through it. I originally got it from Marv at A-1.

As has been mentioned, the 9-9.5" cores are plentiful and that's why they'll push you toward them.

Well I just so happen to have 3 ATI 8” for sale LOL pick your poison.

2- Glide 8” convertors with Turbo inputs one is 67-6800 the other 7000.


1- 904 8” Transbrake convertor 7100-7200 stall

All of them are basically brand new with less than 15- 1/8 mile passes.

Asking for 800.00 plus shipping each.

Jason Buckner 936-577-1648 call or text

I have an 8 inch and I blew right throught it,,,,,is it junk now???

I run an 8" on the street, it flashes 6400 behind my 416 and it drives well on the street. It is a turbo action that is rated at 4800.

All depends on torque input and desired stall speed. With my combo the 9 1/2 Ultimate will flash to 6100. That's all my combo needs. If you have less input torque or need more stall then the 8" or even smaller would be appropriate.
Doug

Depends on who built it and if they will stand behind it. They should be able to fix it and upgrade where needed. Only question will be is if it’s cost effective as opposed to buying new that’s already beefed up.

Jason

Can anyone tell me the answer to this one?? I took out an 8 inch and tried a used converter.That is when realized I was blowing through the 8".Is that converter now damaged???

Well if it worked at one time and now does not, it may need repair. If it never worked it may just be too loose and could be tightened up. I think only a good torque converter manufacture could tell you for sure.

I have a 8" conv that I blew through and I.m still using it.. let it cool
down and it should be fine.. I went to 9600 rpm on mine and it normally
stalls at 5600 rpm.. I dont use a rpm chip for the stall which is how I
leave the line all the time

If it drives okay at light throttle and isn't making noise or metal it is probably okay

The converter was taken out before I realized I was blowing through it,I would like to sell it but I will not sell junk!