Decadence75

iTrader: (17)

Hey everyone. I just finished installing my SS4000 in my stock 4L60E with 3.23 gears. I have made some changes to the shift points and attached the HPT file if anyone wants to take a look at it to see if I missed anything.

My main question here however is that at unlocked speeds I have to rev pretty high to get going. Accelerating from a stop It usually holds around 3K or so dropping to maybe 2500-2700 on a shift then back up to 3000+ until I hit lockup. Once the converter locks and I am at highway speeds everything seems back to normal. And for example driving through residential areas with 25mph limits it runs around 2000-2500 then once I hit around 25-30mph I have to hold it at 1500+ to maintain speed.

Is this normal for it to be so high on acceleration until lockup and just something I need to get used to or did I miss something in the tune. Thanks for any help!

RevGTO

iTrader: (12)

Are you certain the tranny fluid level is up to full? My 3600 behaved like that until I got the tranny truly topped off. I had to drive + add a number of times over until it was actually full.

01ssreda4

iTrader: (96)

Perfectly normal. Here's a vid of my old 3200, exactly the behavior you're describing, and my SS4k revs higher:

Decadence75

iTrader: (17)

That is entirely possible. I have been checking the fluid as often as I can to make sure I am not starving the tranny but it has been looking ok so far on the indicator. I have put right at 9 quarts in so far since buttoning everything back up. So it is entirely possible that I am a few low since I have:

1) Stood the tranny on the tailshaft to drain old fluid out while installing the new converter. I could not get it to seat all the way laying flat

2) Switched to the TCI deep pan which is 2 quarts extra

3) Bypassed the radiator trans cooler with a Hayden 679

I have only put around 40 miles on since I did the install but have already burned a quarter tank of gas since it revs so high constantly in sublock-up traffic. I will keep an eye on the fluid and see if that helps out some. I expected a rise in RPMs to move but was not expecting to stay at 2500-3000 just to slugishly move the vehicle along. It sounds horrible at that high of a rev constantly.

The video is showing as not existing. I expected a rise in RPMs but holding above 2500-3000 to barely move seems excessive. It is a whale until it locks up. I have not tried any WOT yet because I am trying to respect the break in 150 miles and only have around 40 on it so far.


Thanks for the responses guys. Any tips on the tune? Am I good with that or did I miss something?

Blackbird-WS6

iTrader: (15)

if you hit the top link on the video it will go straight to youtube and it works there

Decadence75

iTrader: (17)

Ahh, ok. There we go. I would be gracious if I could be anywhere near 2000 rpm to move the car. Which is where I had figured it would be at once installed. Instead I am at 3000+ and it moves like a pig. There are a couple things suggested to me that I will check into that may help some. I am beginning to wonder if maybe my cam is just too small for this size converter. I didn't want to upgrade my cam until I got some nice heads but if that will correct some of the issues I might go for it.

Blackbird-WS6

iTrader: (15)

well the stall in the video is a 3200 Edge and yours is a 4000 yank.

Decadence75

iTrader: (17)

I realize that but it is a pretty drastic increase in my opinion. But it is still new and I am not exactly a pro tuner so there could be something I left out or on the table. Or I might have to just learn to live with it until I get some larger cubes. I'm gonna poke at it for a while I am sure until I am satisfied it can't be improved, haha. Such is the curiosity of an engineer.

Blackbird-WS6

iTrader: (15)

there are alot of people that run that converter. im sure someone will post up.

burning 1/4 tank to go 40miles is just crazy so something has to be up.

Decadence75

iTrader: (17)

That's what I was thinking as well. Hopefully we can pin it down without me having to haul it off to a tuner. Thanks for your input.

boostednismo

iTrader: (5)

The SS4000 is very loose(requires more rpm) with stock 3.23's. Change to 3.73's and the converter will feel tighter and require less rpms to move. Its been awhile since I drove my car with SS4000 and 3.23(3.73s now) but 2500-3000 rpms seems about right. But once you are done with the break in try and you will see what the hype is all about.

RevGTO

iTrader: (12)

I know that the 4000 is going to be looser than a 3600, but his description makes it sound excessive. My 3600 will creep forward at idle and I can feather the throttle out from a stop at very low rpms. Can you get moving under light throttle? 3000rpm just to get moving wouldn't be right.

One thing for sure is that this is not a tuning issue. If there is excessive slippage, that would have a hydraulic or mechanical cause.

Decadence75

iTrader: (17)

I realize that it will pull hard at wot or off the table at a TPS but 3000+ to move the car seems excessive

25006.0

It's probably from loose converter and 3.23s,if the fluid is topped off.

01ssreda4

iTrader: (96)

I had 3.73s in the video, my Yank hits 2500 super easy. If I want to be going along with traffic I will see 3k and thats with a 3.73. A 3.23 will be worse. It really starts to couple in the upper 3s to 4k and that's when the car can really get moving. Burns lots of gas.

Fixed the link above and here's another where you can hear the rpm but no shot of the gauges, this is briskly driving through the neighborhood with the SS4k. I have several others, just look under my name on youtube.

Vetal

iTrader: (3)

Same here, 1/4 of tank for 40 miles is even better than I have, and I manually lock TC in 4th gear quite often, when I hit 30mph. I have to rev to 2400-2500 to keep up with traffic. 3500 stall, 3.73 gears. And yes, at idle (650rpms) it creeps forward.

newschool72

iTrader: (12)

Sound like the price you pay for a loose converter. A larger cam will help kill some low end torque and make the converter FEEL tighter. You said something about waiting for bigger cubes to fix the issue. Bigger cubes will exaggerate to loose feel. Less torque=tighter More torque =looser at the low end of the RPM range.

justin hover

Soundds perfectly normal to me. 22-2500 rpm to (slowly) get up to speed. 3000 is a normal quick get up. And 3500-4000 will pull hard to whatever speed. I'm sure the 3.23s will make it alittle more loose than 3.73s though. I know a 4000 stall pairs better with a larger cam. Your bypassing the low rpms your hotcam needs.

01ssreda4

iTrader: (96)

If I did city driving a lot (which I dont) I could watch the gas needle go down. I go hwy as much as possible since dumping the stock stall.

newschool72

iTrader: (12)

Going 'BIG STALL' can ruin a street car. Giving up 1000rpms in a stall can kill .2-.3 at the track, but if the car is on the street most of the time, most people will be better off and happier with a 3000 vrs a 4000.
In my 20s (a long time ago) I daily drove a 63 Nova w a manual 2 sp glide and a 9" 4K stall, so Ive been there done that one ,LOL! You get use to the sloppy tip in, but trans heat and mileage are bad.