Update: fti 3800 reg hit? No lock up.
07-26-2019, 11:28 AM
#1
Update: fti 3800 reg hit? No lock up. New issue Starts at page 7
**for search sake I went with a fti 3800 reg hit converter**
Just curious if anyone has any input on this comparison.
My car has 3.73 rear which might make a difference compared to a 3.23/2.73 car in how the stall reacts to driving unlocked. Other than that bolt ons and a cam, and I do drive it around town more than the track.
The thing is I beleive the STR for the yank is 2.5 and the FTI is 2.35, I read that that's not a comparison that means a yank runs faster in the 1/4 or comes off the line harder/faster. But noone in the threads I read really said why that difference does not matter. I seem to remember someone saying there's a trade off with lower STRs on the big end of the 1/4 mile?
**for search sake I went with a fti 3800 reg hit converter**
Just curious if anyone has any input on this comparison.
My car has 3.73 rear which might make a difference compared to a 3.23/2.73 car in how the stall reacts to driving unlocked. Other than that bolt ons and a cam, and I do drive it around town more than the track.
The thing is I beleive the STR for the yank is 2.5 and the FTI is 2.35, I read that that's not a comparison that means a yank runs faster in the 1/4 or comes off the line harder/faster. But noone in the threads I read really said why that difference does not matter. I seem to remember someone saying there's a trade off with lower STRs on the big end of the 1/4 mile?
Last edited by trilkb; 11-15-2019 at 05:34 PM.
07-26-2019, 02:41 PM
#2
From what I've gathered over the years, higher STR means 'harder hit'. A 2.5 STR will have more torque multiplication than a 2.25 STR.. Higher STR will mean more slippage needed to attain that higher STR. And supposedly that higher slippage occurs everywhere at full throttle. OEM are typically 1.8-2.0 so they're relatively tight at top end. Others will chime in to correct or verify me.
I'm running the Yank SS3600 for about 8 years now. When I put the Yank in, I was running a 4.56 rear end for a few months. There was nothing wrong with the 4.56 rear end but I was done rebuilding the OEM 3.23 rear end. The 3.23 rear end went back in and I definitely missed the viciousness of the 4.56s' in 1st and 2nd gear. The 4.56 rear went back in last summer. I'm currently building a 3.73 rear to go in. I work on our little 10 bolts and have many parts to chose/pick from.
I love the SS3600 and had I chosen a SS4000, I would have loved that one too. I have no slippage in street use if I'm at a light and take my foot off the brake, the car will creep forward. As I apply gas to get going, some slippage begins to occur, but nothing annoying at all. I've let others drive it to see its' city streetability and they were surprised how well it behaved.
I have no dragstrip comparisons as I've stopped doing 'test and tunes' at the strips when the Yank went in, it's strictly a street car now. I'm a 'traveller' so convertor 'lock-up' permits regular freeway MPG.
I'm running the Yank SS3600 for about 8 years now. When I put the Yank in, I was running a 4.56 rear end for a few months. There was nothing wrong with the 4.56 rear end but I was done rebuilding the OEM 3.23 rear end. The 3.23 rear end went back in and I definitely missed the viciousness of the 4.56s' in 1st and 2nd gear. The 4.56 rear went back in last summer. I'm currently building a 3.73 rear to go in. I work on our little 10 bolts and have many parts to chose/pick from.
I love the SS3600 and had I chosen a SS4000, I would have loved that one too. I have no slippage in street use if I'm at a light and take my foot off the brake, the car will creep forward. As I apply gas to get going, some slippage begins to occur, but nothing annoying at all. I've let others drive it to see its' city streetability and they were surprised how well it behaved.
I have no dragstrip comparisons as I've stopped doing 'test and tunes' at the strips when the Yank went in, it's strictly a street car now. I'm a 'traveller' so convertor 'lock-up' permits regular freeway MPG.
07-27-2019, 12:23 PM
#3
Thanks. So I'm thinking the fti 3800 hard hit now. Summit and jegs have them and have sales quite often.
The 2.5 vs 2.35 I'm thinking the differences are minimal but the 2.35 may be a happy medium. Like 3.73 gears instead of 410s in a factory 2.73 car.
Hopefully I can find one on sale soon.
The 2.5 vs 2.35 I'm thinking the differences are minimal but the 2.35 may be a happy medium. Like 3.73 gears instead of 410s in a factory 2.73 car.
Hopefully I can find one on sale soon.
07-27-2019, 09:47 PM
#4
Call up fti or yank and speak with somone. They are good guys to deal with. Ive ran both there converters over the years. My first was a 3600 fti. Loved that converter!
From my understanding the hard hit is looser than there normal 3600. The hard hit is also only rated to like a 200 shot on the gas.
From my understanding the hard hit is looser than there normal 3600. The hard hit is also only rated to like a 200 shot on the gas.
07-28-2019, 02:13 PM
#6
TECH Junkie
07-29-2019, 07:15 PM
#8
TECH Junkie
You won't be disappointed with either.
How high do you spin your setup?
I run a Pt4400 now and here is a driving characteristics video I took. I also have 3.73's. The pt4000 is along the same lines but this will give you a idea. It may be a little much if you're picky about driveability in stop and go but I absolutely love it myself. If so then go with the ss3600.
The second video is a wot video to show shift extensions.
07-30-2019, 11:57 AM
#10
TECH Junkie
The higher str will 60' better and be better driving around town but be less efficient once stall speed is reached.
The lower str will not 60' as well but will be more efficient.
So short answer, higher str will 60' better and lower str will trap better and be better for roll racing and highway pulls.
08-05-2019, 11:49 AM
#11
Not being familiar with what Yanks part numbers translate too in terms on fin angle, fin count, stator etc, this is a hard one to answer. OUR popular 3600 option that is the go to for guys looking for a good balance of street and strip performance is a soft hit converter.
Unless you are used to driving a stalled auto and prefer the looser street manners of the hard hit converters then i would go with a soft hit converter since you are doing more daily type driving than racing.
-Dalton
Unless you are used to driving a stalled auto and prefer the looser street manners of the hard hit converters then i would go with a soft hit converter since you are doing more daily type driving than racing.
-Dalton
__________________
FTI COMPETITION CONVERTERS AND TRANSMISSIONS
"IT'S NOT CHEATING, IT'S THE COMPETITIVE EDGE."
1-866-726-8358
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FTIPerformance.com
FTI Converter build sheet
FTI COMPETITION CONVERTERS AND TRANSMISSIONS
"IT'S NOT CHEATING, IT'S THE COMPETITIVE EDGE."
1-866-726-8358
info@ftiperformance.com
FTIPerformance.com
FTI Converter build sheet
08-09-2019, 12:08 PM
#12
Not being familiar with what Yanks part numbers translate too in terms on fin angle, fin count, stator etc, this is a hard one to answer. OUR popular 3600 option that is the go to for guys looking for a good balance of street and strip performance is a soft hit converter.
Unless you are used to driving a stalled auto and prefer the looser street manners of the hard hit converters then i would go with a soft hit converter since you are doing more daily type driving than racing.
-Dalton
Unless you are used to driving a stalled auto and prefer the looser street manners of the hard hit converters then i would go with a soft hit converter since you are doing more daily type driving than racing.
-Dalton
Last edited by trilkb; 08-09-2019 at 12:19 PM.
08-12-2019, 12:59 PM
#13
Well shoot, Currently deciding between the Yank ss3600 or Yank PT4000 for $905 shipped, or the FTI 3800 soft hit or FTI 3600 soft hit (leaning towards 3800) for $835 shipped (through Summit with $50 off coupon)
Ive always wanted the ss3600, but the PT4000 is the same price..... but that FTI would get me a trans cooler for the same price.
Strongly leaning towards the pt4000 after reading some praise for it. I want max performance when I hit it and that seems to be a good way to go.
Ive always wanted the ss3600, but the PT4000 is the same price..... but that FTI would get me a trans cooler for the same price.
Strongly leaning towards the pt4000 after reading some praise for it. I want max performance when I hit it and that seems to be a good way to go.
Last edited by trilkb; 08-12-2019 at 01:11 PM.
08-12-2019, 04:11 PM
#15
Yes, with you having 3.73's it will drive very nice. I cut 1.56 60's when I ran that converter and it is more efficient and better shift extensions then the ss series. I ran the ss3600 also and much more prefer the Pt series converter. The pt is just much better/ more efficient when wot but also 60's very well.
You won't be disappointed with either.
How high do you spin your setup?
I run a Pt4400 now and here is a driving characteristics video I took. I also have 3.73's. The pt4000 is along the same lines but this will give you a idea. It may be a little much if you're picky about driveability in stop and go but I absolutely love it myself. If so then go with the ss3600.
The second video is a wot video to show shift extensions.
https://youtu.be/EytOniqYP7M
https://youtu.be/7cYawJ2AIXQ
You won't be disappointed with either.
How high do you spin your setup?
I run a Pt4400 now and here is a driving characteristics video I took. I also have 3.73's. The pt4000 is along the same lines but this will give you a idea. It may be a little much if you're picky about driveability in stop and go but I absolutely love it myself. If so then go with the ss3600.
The second video is a wot video to show shift extensions.
https://youtu.be/EytOniqYP7M
https://youtu.be/7cYawJ2AIXQ
That thing is sloppy loose!
08-12-2019, 07:01 PM
#19
This. I had the SS3600 and while it was better than stock I was yearning for more. I bought a Circle D 2E which is rated at 4000-4400, sadly I didn't get to see how it performed as my car has been sitting for years.
I'd go with a larger stall with room to grow depending on what your goals are for the car. A friend swapped his SS3600 to a PT 4400 and his car picked up everywhere FWIW, but he also used a different tuner for it so who knows if that played into the performance or not.
08-12-2019, 07:21 PM
#20
Yank recommended the ss3600 lol. It's a safe bet converter and I get why they would recommend it. I said my driving style is more rolling hits from 30 to 40mph. But at the track I don't want to leave mph on the table, I will run on street tires once or twice I'm positive just to see what's what as far as doing a true nothing but a converter comparison.
Guess pt4000 it is? lol. Pretty sure my car will stay NA.
The pt4000 flashes about 700rpm under max torque for my cam which I read is a good thing. I think either converter can blow the 245 45 16s off my car. I read a lot of posts about people going from ss to pt series and getting gains. It can't all be in their heads right?
Guess pt4000 it is? lol. Pretty sure my car will stay NA.
The pt4000 flashes about 700rpm under max torque for my cam which I read is a good thing. I think either converter can blow the 245 45 16s off my car. I read a lot of posts about people going from ss to pt series and getting gains. It can't all be in their heads right?
Last edited by trilkb; 08-12-2019 at 07:31 PM.