SS4000....Is it too big for 2.73's????
 

Basically what the subject says. I have figured out that I have 2.73's. I really want the Yank SS4000 but I am thinking maybe i'll have to do a gear swap also. Can't afford both now so what do you guys think??

It will be loose! But, you should get a converter first.

I know we have a few diehard 2.73 guys running larger stalls...hopefully they'll chime in.

The SS3800 would be a good choice. It will provide a HUGE gain over the stock unit with 2.73s.

The 3600 works well if looseness is a bigger concern.

Yes, it will be loose. If you think you will do a gear later, go for it now though. Needless to say if you drive on the highway with it locked up, its not a prob.
The reason *I* still have 2.73 gears is I'm not spending a f'n dime on this
2 cent 7.5" rearend, but it has not broke after hundreds and hundreds of passes... :judge: :jest: :chug:

Defiantly gonna be loose but I think it would be ok and a very large improvement over the stock converter. Good Luck man

WeS

i have the ss3800 with stock 3:23's and I love it!

I would go with a vig.3600 .I have had a 3200 for just over a year and have not had any problems.

Thanks C54U2NV, i am looking into the vig. 3600. I have a buddy who has the vig. 3200 in his vette and it seems to be pretty slow :barf: ...... so i am gonna go with a little bit bigger one. thanks for all your help guys

Vig 3600? LOL.. that stalls to ~4300 and has a lower STR (you want more with those gears)

It will be looser than the Yank 4000.

:huh: Everyone I have talked to said that PI converters stalled up about 400 more rpms than advertised. That would make the 3600 ~ 4000. Have I been misinformed??

Isnt the price difference between the Yank and the Vig. quite a bit??

In the LS1 world, the Vig converters stall higher than advertised.

How much of a differance would it be between a 3600 and 3800 stall for 2.73 gears?

I don't think it would be much, because it is only 200 rpms, but the STR is .05 higher so I assume it should be almost exactly the same

Not much at all, you were right in looking at the STR, that will determine the looseness of the converter. Should be about the same. Good Luck

WeS

If I plan on running nitrous do i need the balloon plate, or does it matter that much?? I know the Vig. comes with it. Would the vig. 3200 or the 3600 be best for my application.

The balloon plate will offer a little extra added security bun not completly necessary. Good Luck man

WeS

I believe the SS3600 uses a different pump compared to the SS3800. If the pumps are different, the 3600 will be tighter and not have as big a shift extension. Either converter will make a big difference in performance.


The STR is one factor in how loose a converter feels. For example, the YTP series have pretty high STRs but are very loose feeling because of their design that gives them a long shift extension.

I think I'd go with an SS3800 for 2.73 gears in a daily driven car.

The Vig 3600 stalls to about 4300 and would be some kind of MAJOR loose with 2.73 gears. No freakin' way would I drive that converter everyday with those gears.

STR does have some effect on drivability although the stall speed has more.