496ci revamped

Maniacmechanic1 said:
But not the Torque converter.
Where your at.

Hopefully the 4L80E is ok.
Hard to tell.
Usually a teardown inspection required.
Click to expand...
I had a conversation with Tony
On the issue.
What's happening is supposed to happen
Basically valve body is locked
Torque converter is not, it doesn't have the front clutch to lock up.
So higher gear and rpm it slips the center
By passes fluid.
His explanation makes sense
He said dyno guy needs to hookup to tachometer wire to get signal,
Which we did try but plug wire was to heavy to pick up signal.
 
Speedlink1973 said:
I had a conversation with Tony
On the issue.
What's happening is supposed to happen
Basically valve body is locked
Torque converter is not, it doesn't have the front clutch to lock up.
So higher gear and rpm it slips the center
By passes fluid.
His explanation makes sense
He said dyno guy needs to hookup to tachometer wire to get signal,
Which we did try but plug wire was to heavy to pick up signal.
Click to expand...
Ok.
What I was told yesterday was that your Lockup torque converter should never be activated locked up while on the chassis Dyno rollers.
Immediate failure will occur.
And it's only safe to do that with a Billet constructed torque converter.
Triple Disc style.
Like the Coan Racing 9.5inch Billet model.
 
Screenshot_20180917-065503_Messenger.jpg
Maniacmechanic1 said:
Ok.
What I was told yesterday was that your Lockup torque converter should never be activated locked up while on the chassis Dyno rollers.
Immediate failure will occur.
And it's only safe to do that with a Billet constructed torque converter.
Triple Disc style.
Like the Coan Racing 9.5inch Billet model.
Click to expand...
Same thing Tony told me, has to be billet
 
$1150 for torque converter from Coan
Not a lockup, but won't lag like the one in
There now couple hundred rpms not 1800 rpms, definitely a billet he
Said.

Ordered it will be done and I can pick it up Wednesday.
he told me to dump that B&M trickshift
Transmission fluid, said he wasn't a big fan of it and set me up with a case of Amsoil
 
Last edited:
Speedlink1973 said:
$1150 for torque converter from Coan
Not a lockup, but won't lag like the one in
There now couple hundred rpms not 1800 rpms, definitely a billet he
Said.

Ordered it will be done and I can pick it up Wednesday.
he told me to dump that B&M trickshift
Transmission fluid, said he wasn't a big fan of it and set me up with a case of Amsoil
Click to expand...
Coan sold you a Non Lockup Torque converter for a 4L80 E ?
Is that correct ?
Not sure how that works out for Street driving.
With a 700R4 or 4L60E the legend is the transmission will overheat without a lockup converter street driving.
Not sure if it applies to a 4L80E or not.

Turbo 400 no issues as long as stall and rear diff gear in line for Street strip use.
Or a highway gear chosen.
 
With a 496 BBC making power and running on 93 octane gas at close to $4 per gallon it may not matter lockup converter or non lockup.
Going to use gasoline. Limit how much you can drive per week and actually afford.
 
Maniacmechanic1 said:
With a 496 BBC making power and running on 93 octane gas at close to $4 per gallon it may not matter lockup converter or nom lockup.
Going to use gasoline. Limit how much you can drive per week and actually afford.
Click to expand...
Keep in mind I drove it 2365 miles with no heat issues at all transmission temperature gage 160 180 on a hot day
Work is only 15 minutes away
The farthest I've drove it was 127 miles
Interstate 70 no issues, 30 row oil cooler
With a fan keeps heat out.

Yes I questione ot myself

Tony vargas animal performance
Said he could actually put a solenoid
To do a manual lockup
With a button this winter for me.

Coan explained what was happening is
Converter I have 2800 stall is more like a 4800 stall because of extra new torque.
They are building a torque converter
Based on all my information
So it's a true 3000 stall
They know it's not a lockup
 
Speedlink1973 said:
Keep in mind I drove it 2365 miles with no heat issues at all transmission temperature gage 160 180 on a hot day
Work is only 15 minutes away
The farthest I've drove it was 127 miles
Interstate 70 no issues, 30 row oil cooler
With a fan keeps heat out.

Yes I questione ot myself

Tony vargas animal performance
Said he could actually put a solenoid
To do a manual lockup
With a button this winter for me.

Coan explained what was happening is
Converter I have 2800 stall is more like a 4800 stall because of extra new torque.
They are building a torque converter
Based on all my information
So it's a true 3000 stall
They know it's not a lockup
Click to expand...
Reading Yellow Bullet.
Lockup Vs Non Lockup 4L80E.
Everyone has an opinion and no concrete evidence.
Better listen to Coan and try it.
Thinking single disc lockup can not be made to live reliable at your power level.
Noticed a few promote non lockup at 600 Hp .
Only likely get reliable Triple Disc Full Billet and expensive 4L80E.
 
With 700R4s, I have read that as the stall speed is raised, the diameter of the converter gets smaller -
and so does the torque converter lockup clutch, which reduces it's holding capacity. Add more torque
and it's an even bigger problem. That's why the industry has abandoned high stall lockups - at least
for the 700R4. But I would imagine that this also applies to 4L60E and 4L80E.
To survive big torque, you need multiple disks, or abandon the lockup completely.
How bad do you really need the lockup?
 
Loves302Chevy said:
With 700R4s, I have read that as the stall speed is raised, the diameter of the converter gets smaller -
and so does the torque converter lockup clutch, which reduces it's holding capacity. Add more torque
and it's an even bigger problem. That's why the industry has abandoned high stall lockups - at least
for the 700R4. But I would imagine that this also applies to 4L60E and 4L80E.
To survive big torque, you need multiple disks, or abandon the lockup completely.
How bad do you really need the lockup?
Click to expand...
700R4 & 4L60E & 200R4 use the same Converter.

The Turbo 400 has real efficient Fluid coupling.
Especially in large 12 inch TH350 stock size or TH400 13 inch stock size.
5:1 torque multiplication. Too stock.
 
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