4L80E mods for 700hp, accumulator delete 

For 1000 horsepowah severe duty. First trip- grind here, plug here, delete, drill, drill, drill. Cross fingers and send it!

It's in the truck driving around

@@TheDrivewayEngineer How about now? I'm buying all of the parts for my trans now. More expensive than I was originally anticipated.

Reverse servo pin isn't engaging the band

No sir, what I've done in these three videos replaces what an HD2 kit does. If you have a transmission in a vehicle, the Transgo is a good way to go. If it's out, internally dual feeding, deleting the accumulators, rollerizing the output is far superior. After around 750 ft/lbs on the input, the mechanical parts inside become a weak link. Matt did make 1000hp, but it was for a single dyno pull. Idk how many more times he ran at that power level, but it wasn't a daily deal to shovel that through it.

BTW, at the end if it all, I can certainly add it up.

Thank you so much. I do have a 72 nova roller I bought, has a built 350 chevy, had nitrous, turbo 400 of unknown strength. Was a track only drag car ran 7.1 in eighth or maybe low 11s quarter. In your opinion is that turbo 400 internally as strong as a 4L80E? ( assuming 400 is in normal shape, feels good driving it now). Im going to sloppy build your stage 3 with a 5.3, VS racing china twin turbos so 800 to 1000 hp. My concern is if my turbo 400 can stand up to it, or would a junk yard 4L80E with your mods be stronger? Occaisional drag strips runs and a lot of street use. Thanks! @@TheDrivewayEngineer

@@TheDrivewayEngineer Thank you, that would be great! Comparing costs of doing a junk yard 4L80E your mods, to building a turbo 400 for my 72 Nova.

How do you the shift with the delete. I bought the purple spring and delete kit from Ck putting them in my build now.

I was told my a place that does offroad trophy truck stuff the input shaft and the forward drum are the most important pieces. I don't have any first hand knowledge but I took their word for it and the car has been making over 800whp for like 3-4 years now and it's not broken yet haha.

Not all models have a check ball in that spot. Doing these mods you never have to put it there. This transmission is still in my truck and functioning well.

I do it to every 4l80 I build

Late AF, but the accumulatorndelete is working great!

@@TheDrivewayEngineer Np, thanks. I might do it on my turbo ls K5 Blazer whenever I get around to actually doing the swap. Right now I’m doing paint and body and collecting parts to rebuild everything before the swap.

what parts of the kit did u use?

@@Nutflame55 This is weird but I’ve replied to this twice. I thought I accidentally deleted the first, but my second attempt is gone too. Did you get to see the others?

@@deegan727 no I'm still lost

It's a GT45, 170 dollars on Ebay

Because I don't want anything other than the VB and PCM affecting shift timing.

@@TheDrivewayEngineer thank you I've watched alot a videos on the 4l80e transmission and I must say I've learned alot about the transmission and rebuilding it I'm building a 6.0 with twins using the 4l80e trans I hoping to get around 700hp would the accumulator benefit my build if I were to do it on my 4l80e it's going to be a street car and possibly a few weekends at the strip thank you for the quick reply

Yes, nothing changes for the 6.0, the 80 is just a plug and a couple pins changed

The Driveway Engineer does it matter what the plug colors ? thnx a lot brothere

@@joseb1700 03 and 04 should be the same colors. The colors need to match

The Driveway Engineer ok

same here, figure out the issue?

Yes

@@TheDrivewayEngineerif i have a stock transmission w/ stock internal components. will it damage anything in transmission itself if i delete accumulator? Trans is a 4L80E with no modifications

In The Driveway Engineer Facebook group is a member named Ryan Jan's, hit him up

No such thing if you're buying new for 4l80 unfortunately. CircleDSpecialties is a pretty good somewhat inexpensive option but its still $700, as you probably know its easy to spend 2K on a converter. You could always take a stock converter to a GOOD transmission rebuilder and have em re-stall it. I had my CircleD 278 restalled and my 500hp 3000 stall chevelle feels almost no different from a 200hp 1800 stall car when i don't floor it.

Circle D is a trash restalled 4l60 converter, my converter from Ryan is smaller, lighter, more efficient... And was 500 bucks shipped to my door.

@@TheDrivewayEngineer figures why my builder said i should get it restalled lol

@@rustysausage69 there's only so much they can do in the 278mm size. It was ok a few years ago, but they have better stuff out there now.

Well it deletes the accumulators lol. The way a stock transmission shifts, some stuff moves around, and fluid is allowed to pass to the next gears accumulator. So if you're in 2, fluid starts building up in the 3 accumulator before the actual shift. There's a spring, that I show briefly, whose pressure needs to be overcome before the shift from 2-3 can take place and finish. If you delete the accumulator, when the checkball moves for a 2-3 shift, it happens. Right now. Done. No slip. No lag. People try to mess with this in tuning by zeroing out shift times. Transgo messes with the spring pressures. J.R. just likes to throw them in the trash. Now, I have a 3400 rpm converter, so my shifts with the shown hole sizes and no accumulators, will shift softer than the same set up on a stock converter.

@@TheDrivewayEngineer Oh I get it, it doesn't make the transmission handle any more power, it just makes your acceleration a little bit quicker. Can you do this kind of thing on Lower powered vehicles?

The accumulator delete does not add power capacity, the holes drilled do. You can do it at any power level.

@@TheDrivewayEngineer Okay thanks, I know very little about automatic transmissions, but now I know a little bit more.

@@TheDrivewayEngineer what happens if you don't got 700hp but still drill out the pump and not do accumulator delete on a stock 5.3

Through the separator plate.

but the separator plate is the same

I did all of the modifications except for the accumulators now I don't know how many check balls to use and where

What happens when you do this plus the trans go kit

You waste 140 bucks. Or maybe it's twice as gooder

That sucks, it's not expensive, but dropping the thing, booo

Yes they are

No point at all, do the Transgo, stop watching this

@@TheDrivewayEngineer then I would have to put the seals back in .just tell me if I should use the springs on the accumulator from the trash go kit .and the Boost valve from the trans go kit. will it work that's all I am asking since I already got it will it work