Tremec T-56 Magnum "F" - Please Tell Me this is real!
01-25-2020, 05:36 AM
#61
9 Second Club
If you want one with old F Body ratios, then buy one with them. You may need someone to build it for you though at additional cost. Not sure if Tremec themselves offer it yet.
Sounds like a lot of the gearing issues you talk about are down to not enough power if you've only 450. That needs fixed lol.
As for fuel economy, the 0.63 vs 0.5 6th gear really isnt going to make any difference at all.
Sounds like a lot of the gearing issues you talk about are down to not enough power if you've only 450. That needs fixed lol.
As for fuel economy, the 0.63 vs 0.5 6th gear really isnt going to make any difference at all.
01-25-2020, 07:26 AM
#62
If you want one with old F Body ratios, then buy one with them. You may need someone to build it for you though at additional cost. Not sure if Tremec themselves offer it yet.
Sounds like a lot of the gearing issues you talk about are down to not enough power if you've only 450. That needs fixed lol.
As for fuel economy, the 0.63 vs 0.5 6th gear really isnt going to make any difference at all.
Sounds like a lot of the gearing issues you talk about are down to not enough power if you've only 450. That needs fixed lol.
As for fuel economy, the 0.63 vs 0.5 6th gear really isnt going to make any difference at all.
side note, is my fully built t56 not goona like shifting at 7300 with a monster single disk race clutch.
01-25-2020, 07:29 AM
#63
And the .63 final gear issues I have is 50 percent revving higher and being louder than necessary, 30 percent engine is completing more cycles per minute than necessary which in the long run adds to more wear and tear right.....and 20 percent fuel which like u said won't be more than 2 mpg give or take
i loved my built ls1 and all but with the dumps it eventually gets a little loud on 3 hour road trips which the .50 gear would help
i loved my built ls1 and all but with the dumps it eventually gets a little loud on 3 hour road trips which the .50 gear would help
Last edited by Floorman279; 01-25-2020 at 07:30 AM. Reason: .......
01-25-2020, 09:48 AM
#64
9 Second Club
A move from 0.5 to 0.63 is not 50%. Unless overall as you refer to rpm, you must be using a pretty short diff too ?
Pretty sure the 0.5 tall 6th was only ever put in place for emissions reasons so they could claim the cars were clean or pass tests at a cruise speed.
But yes, when I had the tall 6th in mine I thought it was good...but really, after changing to the Magnum any increase in rpm really is no big deal at all. With hindsight, 6th was always a little tall ( Even if on occasion I looked for a 7th lol )
5th however did serve me well for top speed stuff, as it enabled me to hit 200+ in 5th. Well....until 5th gear exploded lol. Twice. I did think I compromised with the shorter Magnum 5th...but as I'd never do a mile again, and doubt I'd try for 200+...the shorter would be better suited to say a 1/2 mile now anyway. And the shorter gear will be stronger.
So it was all win for the shorter gearset Magnum,. I would not opt for the 2.97 though, it just leaves too big a step from 1-2, and 2-3.
Certainly a decade or so ago when I had a "built" T56 and ran a single disc Textralia OZ700 single disc, I had no issue shifting at 7-7300rpm. I didnt shift there all the time, but did hang on on quite a few occasions and rarely did I ever have any issues.
So a T56 in good condition with good oil and clutch....can do it.
But a Magnum is going to be better. And there's no question it's stronger.
Pretty sure the 0.5 tall 6th was only ever put in place for emissions reasons so they could claim the cars were clean or pass tests at a cruise speed.
But yes, when I had the tall 6th in mine I thought it was good...but really, after changing to the Magnum any increase in rpm really is no big deal at all. With hindsight, 6th was always a little tall ( Even if on occasion I looked for a 7th lol )
5th however did serve me well for top speed stuff, as it enabled me to hit 200+ in 5th. Well....until 5th gear exploded lol. Twice. I did think I compromised with the shorter Magnum 5th...but as I'd never do a mile again, and doubt I'd try for 200+...the shorter would be better suited to say a 1/2 mile now anyway. And the shorter gear will be stronger.
So it was all win for the shorter gearset Magnum,. I would not opt for the 2.97 though, it just leaves too big a step from 1-2, and 2-3.
Certainly a decade or so ago when I had a "built" T56 and ran a single disc Textralia OZ700 single disc, I had no issue shifting at 7-7300rpm. I didnt shift there all the time, but did hang on on quite a few occasions and rarely did I ever have any issues.
So a T56 in good condition with good oil and clutch....can do it.
But a Magnum is going to be better. And there's no question it's stronger.
01-25-2020, 12:18 PM
#65
A move from 0.5 to 0.63 is not 50%. Unless overall as you refer to rpm, you must be using a pretty short diff too ?
Pretty sure the 0.5 tall 6th was only ever put in place for emissions reasons so they could claim the cars were clean or pass tests at a cruise speed.
But yes, when I had the tall 6th in mine I thought it was good...but really, after changing to the Magnum any increase in rpm really is no big deal at all. With hindsight, 6th was always a little tall ( Even if on occasion I looked for a 7th lol )
5th however did serve me well for top speed stuff, as it enabled me to hit 200+ in 5th. Well....until 5th gear exploded lol. Twice. I did think I compromised with the shorter Magnum 5th...but as I'd never do a mile again, and doubt I'd try for 200+...the shorter would be better suited to say a 1/2 mile now anyway. And the shorter gear will be stronger.
So it was all win for the shorter gearset Magnum,. I would not opt for the 2.97 though, it just leaves too big a step from 1-2, and 2-3.
Certainly a decade or so ago when I had a "built" T56 and ran a single disc Textralia OZ700 single disc, I had no issue shifting at 7-7300rpm. I didnt shift there all the time, but did hang on on quite a few occasions and rarely did I ever have any issues.
So a T56 in good condition with good oil and clutch....can do it.
But a Magnum is going to be better. And there's no question it's stronger.
Pretty sure the 0.5 tall 6th was only ever put in place for emissions reasons so they could claim the cars were clean or pass tests at a cruise speed.
But yes, when I had the tall 6th in mine I thought it was good...but really, after changing to the Magnum any increase in rpm really is no big deal at all. With hindsight, 6th was always a little tall ( Even if on occasion I looked for a 7th lol )
5th however did serve me well for top speed stuff, as it enabled me to hit 200+ in 5th. Well....until 5th gear exploded lol. Twice. I did think I compromised with the shorter Magnum 5th...but as I'd never do a mile again, and doubt I'd try for 200+...the shorter would be better suited to say a 1/2 mile now anyway. And the shorter gear will be stronger.
So it was all win for the shorter gearset Magnum,. I would not opt for the 2.97 though, it just leaves too big a step from 1-2, and 2-3.
Certainly a decade or so ago when I had a "built" T56 and ran a single disc Textralia OZ700 single disc, I had no issue shifting at 7-7300rpm. I didnt shift there all the time, but did hang on on quite a few occasions and rarely did I ever have any issues.
So a T56 in good condition with good oil and clutch....can do it.
But a Magnum is going to be better. And there's no question it's stronger.
yea honestly I love where my gearing is now with 3.89s......perfect. and I can change to a 3.40 rear gear and make the magnum 1 to 4 very close to my current but the .63 is still too short imo with 3.40s
01-25-2020, 06:06 PM
#66
ModSquad
iTrader: (6)
From my T56 to my magnum (.50 6th to .63 6th) my rpms went up about 200 at 70 mph. I’ve been doing a lot of street tuning lately and finding out that I can really string out my mileage at cruise with tuning. My startup tune was set up very rich across the board, so we’ve been pulling fuel out a lot. Using a wideband of course. You can really tune for max mileage at cruise if you want more mpg. I’m running a 3.73 rear and I’m about to go to a 3.90. I need more gear for roll racing. I don’t care about the mileage deal, as this car won’t ever go over a 300 mile round trip. But it would be cool to have a 434 with this kind of power that got decent mileage.
01-25-2020, 07:15 PM
#67
From my T56 to my magnum (.50 6th to .63 6th) my rpms went up about 200 at 70 mph. I’ve been doing a lot of street tuning lately and finding out that I can really string out my mileage at cruise with tuning. My startup tune was set up very rich across the board, so we’ve been pulling fuel out a lot. Using a wideband of course. You can really tune for max mileage at cruise if you want more mpg. I’m running a 3.73 rear and I’m about to go to a 3.90. I need more gear for roll racing. I don’t care about the mileage deal, as this car won’t ever go over a 300 mile round trip. But it would be cool to have a 434 with this kind of power that got decent mileage.
01-25-2020, 08:02 PM
#68
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05-19-2020, 07:31 AM
#72
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07-23-2020, 04:38 AM
#74
9 Second Club
https://www.bowlertransmissions.com/...m-pump-ugrade/
Although this that requires an external pump, has many clear advantages in terms of oiling the front gears for those vehicles that launch very hard.
https://www.tickperformance.com/tick...te-t56-magnum/
Although this that requires an external pump, has many clear advantages in terms of oiling the front gears for those vehicles that launch very hard.
https://www.tickperformance.com/tick...te-t56-magnum/
11-24-2020, 02:08 PM
#75
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I got my Magnum F in, does anybody know what the sensor near the front of the passenger side is for? I don't recall having that on my stock F-body T-56. Would be nice if it came with even some basic paperwork, but oh well. It has been bolt in so far, unfortunately it may have to come back out as the tail housing is leaking. I think I will just re-seal it myself rather than trying to warranty, as I did not notice until I already had the trans in the car. Probably easier than shipping back to Tremec.
