Projected horsepower
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From: Louisiana
I've heard a couple times that when you get into higher hp deals with the lockup, it can be hard on parts and high HP is subjective depending on who you ask.
Don't know how true that is since most everyone I know runs PG/400 stuff.
If that's what they recommend, that's what I'd do.
Circle D told me that converter is rated to 800+ hp but they have quite a few people running it beyond that including me so for the price its not a bad deal.
Don't know how true that is since most everyone I know runs PG/400 stuff.
If that's what they recommend, that's what I'd do.
Circle D told me that converter is rated to 800+ hp but they have quite a few people running it beyond that including me so for the price its not a bad deal.
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From: Louisiana
Thread Starter
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Joined: Oct 2022
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From: Louisiana
I really don't need a transmission that is built because I have a local guy that will build an 80e for me for around 1500 and the transmission I'm finding on ebay around 700-1000 so im looking at around 2500 total investment if I go that route and the converter is 1400.
I really don't need a transmission that is built because I have a local guy that will build an 80e for me for around 1500 and the transmission I'm finding on ebay around 700-1000 so im looking at around 2500 total investment if I go that route and the converter is 1400.
High perf clutches, valve body pressure mods, HD Drum, 34 Element sprag the usual stuff, built by a local guy who's been doing it for 40 years and does all my stuff.
He actually bought it already built but had my guy look at it just in case and found it was all messed up.
He wasn't going to race with it, just a fun mid-HP street truck.
I'll ask my buddy and see if he wants to unload it.
it's definitely tight which is what I wanted for my setup. Towing and part throttle was important to me. The 7665 spools instantly on my 4.8 and still roasts 31 off road tires from a 35 roll.
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From: Louisiana
This one isn't a crazy, over the top, high dollar build because it wasn't necessary.
High perf clutches, valve body pressure mods, HD Drum, 34 Element sprag the usual stuff, built by a local guy who's been doing it for 40 years and does all my stuff.
He actually bought it already built but had my guy look at it just in case and found it was all messed up.
He wasn't going to race with it, just a fun mid-HP street truck.
I'll ask my buddy and see if he wants to unload it.
High perf clutches, valve body pressure mods, HD Drum, 34 Element sprag the usual stuff, built by a local guy who's been doing it for 40 years and does all my stuff.
He actually bought it already built but had my guy look at it just in case and found it was all messed up.
He wasn't going to race with it, just a fun mid-HP street truck.
I'll ask my buddy and see if he wants to unload it.
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From: Louisiana
yeh I definitely don't want something to tight. I dont do any towing with my truck so thats not a need for me. Street and occasionally strip is the way im looking to go. Need that 10 second pass
There's too much inside for someone to screw up and you won't until you put it in the car.
My buddy with the 4l80 thought his was good to go, I talked him into letting my guy open it up and go through it and he's glad he did.
There was cut seals that wouldn't hold air, dry clutches, nothing was lubed/oiled, actual debris dirt/dust in the pan and inside the case and other things that indicated it was thrown together poorly.
My guy said it probably wouldn't even had gone in gear and with the HP planned would've broken in short order.
Sourcing the parts yourself can save money too, the 4L80 uses a lot of TH400 parts which you can collect slowly and then find a good deal on a core unit to build.
Unfortunately, anything that has 4L80 on it is an arm and leg these days because they're so popular.
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Best way I know of to geta 4l80e is to buy a 2500 or 3500 express or savana , most pickups are 4x4 and not what you need. Bonus is maybe a spare engine out of the deal , definitely a lot more work though. As far as a converter goes a triple disc is not necessary and adds some cost - I'm cheap so went single which just means no WOT lockup. The 4l80 has a taller first gear 2.42 vs 3.06 or close to that so keep that in mind when choosing the converter. Depending on your definition of a street truck or daily driver you may not want the stall speed too high and if traction is an issue a higher stall isn't going to do a bit of good . I would not gain anything from a higher stall on my truck with the current suspension
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From: Louisiana
This goes against what I'm saying but I'll never buy a transmission from someone over the internet, I'll always have it built locally.
There's too much inside for someone to screw up and you won't until you put it in the car.
My buddy with the 4l80 thought his was good to go, I talked him into letting my guy open it up and go through it and he's glad he did.
There was cut seals that wouldn't hold air, dry clutches, nothing was lubed/oiled, actual debris dirt/dust in the pan and inside the case and other things that indicated it was thrown together poorly.
My guy said it probably wouldn't even had gone in gear and with the HP planned would've broken in short order.
Sourcing the parts yourself can save money too, the 4L80 uses a lot of TH400 parts which you can collect slowly and then find a good deal on a core unit to build.
Unfortunately, anything that has 4L80 on it is an arm and leg these days because they're so popular.
There's too much inside for someone to screw up and you won't until you put it in the car.
My buddy with the 4l80 thought his was good to go, I talked him into letting my guy open it up and go through it and he's glad he did.
There was cut seals that wouldn't hold air, dry clutches, nothing was lubed/oiled, actual debris dirt/dust in the pan and inside the case and other things that indicated it was thrown together poorly.
My guy said it probably wouldn't even had gone in gear and with the HP planned would've broken in short order.
Sourcing the parts yourself can save money too, the 4L80 uses a lot of TH400 parts which you can collect slowly and then find a good deal on a core unit to build.
Unfortunately, anything that has 4L80 on it is an arm and leg these days because they're so popular.
Thread Starter
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Joined: Oct 2022
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From: Louisiana
Best way I know of to geta 4l80e is to buy a 2500 or 3500 express or savana , most pickups are 4x4 and not what you need. Bonus is maybe a spare engine out of the deal , definitely a lot more work though. As far as a converter goes a triple disc is not necessary and adds some cost - I'm cheap so went single which just means no WOT lockup. The 4l80 has a taller first gear 2.42 vs 3.06 or close to that so keep that in mind when choosing the converter. Depending on your definition of a street truck or daily driver you may not want the stall speed too high and if traction is an issue a higher stall isn't going to do a bit of good . I would not gain anything from a higher stall on my truck with the current suspension
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I did the transgo hd2 kit to the 4l80 before I installed it . Used the sloppy video as a guide. Worked fine but decided to have it gone over when I broke the diff and driveshaft - as a precaution. A triple disc will certainly work and even help with a couple mph on the top end but an unnecessary expense at this level IMO.
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From: Louisiana
I'm still a little undecided though because I could go the 80e option or I could just get frank to build me a 60e and just send my converter off to pct to get re worked and that may actually be the cheaper and easier route.
If you plan to beat on it a lot and make a lot of passes over the next couple of years, you wouldn't find me suggesting rebuilding that 4L60E. On the other hand if your buddy rebuilds it for small money I'd maybe do that just for now.
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From: Louisiana
that's what a few of my buddies are telling me too thats why im kind of nervous about doing that. I will beat on it a little bit at the track.
Building a TH400 is significantly cheaper, I looked at doing a 4L80 when my TH400 failed and it was about half to have my TH400 built to handle 1,200HP and that was me buying a TH475 core to use.
