drecpt83

There's a few mods you can do to the stock th400 valve body that will make it shift nice and firm without using a shift kit, unless it already has one. I was having issues with my aftermarket valve body so i grabbed a stock one, did the mods and it doesn't miss a beat! I would at least do that and see how you like it. Th400s can withstand some pretty good power even in stockish form

Kyle.t91

Well it shifts. I'm gong to swap the wastegate spring tomorrow to the 5lb. 3rd gear seems to slip some when I got on it some. This is pretty much a temp fix so I can still drive the truck around. Still not sure what route I'm going to go. Buying a trans from a reputable vendor is the way I'm leaning towards. FtI stage 3 maybe. All options available. How you guys think a glide would do?

Kyle.t91

I dunno if it's worth messing with the valve body drecpt83. I'm hoping that this trans will hold up a. Few months till I can save up some money.

jordoza777

iTrader: (2)

The valve body mods he is most likely speaking about will firm the shifts and reduce the slippage that happens between gears. It only required some gaskets and drilling larger holes in the spacer plate. If you take it easy most 400 will handle 400 to 450 without the mods. Just depends on if it shifts good for you and at a high enough rpm or it would need some governor tweaks. All easily done without to much hassle depends on if your sure you wanna go 4l80 or if you might wanna just make the 400 live.

Kyle.t91

I don't think mods will help his particular trans. I paid 150 for it and it's been sitting in a feild for a few months so I was shocked that the damn thing went through all the gears lol. Pretty much came from a junk yard.

Kyle.t91

Well I had the truck up for sale/trade and it didn't go as I thought. Couple guy messaged me about trading but kinda backed out once they realized the amount of rust damage the truck has. I said in the ad.the damn thing was a rusted out hot rod lol
Anyways....Im keeping it for now. Going with a 80e I'm getting from a buddy( different one then the th400). Found a remanufactured and restalled converter on eBay for 160. Going to do the hd2 shift kit and buy jakes manual controller. My buddy is also going to give me a shifter so I don't have to buy one. Hope to have it all in by Feb. What you guys think?

truckdoug

iTrader: (25)

I had mine up for sale before bodywork paint and had about the same response.

now that its all 100% rust free and painted nicely I dont want to sell it lol

forcd ind

iTrader: (7)

Jakes had the man. trans box on sale for $150, not sure if it was until the end of Dec or just one week-you can wire it yourself for free also.

Kyle.t91

Yeah I saw some write up Matt did on sloppy wiki on how to do it. Just curious as to why they have a black box on the ones from Jakes? Unless that's where he is doing all his jumping since it's external vs internal

Kyle.t91

ordered this yesterday.

https://www.ebay.com/itm/4L80E-TORQU...-/202077265353. hd2 kit is at home. ill be doing the rewire of the trans myself. pretty simple once i looked at the wiring diagram.

brandon6.0

iTrader: (32)

My buddy ran one of those converters with a 60e. It was way to loose, like slipping loose. I wanna say it was supposed to be a 2800 dtall. He sent it right back. And reused a stock converter without issues.

Kyle.t91

i dont have a stock one and that was the cheapest i found so ill just hope for the best. i was also thinking....will it be necessary to install the hd2 kit along with doing the full manual conversion wiring? i know the full manual gives full line pressure so the shifts will be firm from that. any benefits or downside to doing both? or should just do both anyways? that was my plan all along until my mind started wondering last night.

laytoncamaroz28

iTrader: (10)

What intercooler are you running and how is your piping routed? I'm doing a similar build and it's pretty tight getting an intercooler to fit up front.
https://ls1tech.com/forums/forced-in...o-ls1-80e.html

Kyle.t91

its a 3inch ebay one. to get it to fit like mine your going to have to remove the hood latch assembly. i also had to notch the brackets that hold the grill in for the intercooling pipe to fit. i dont have any pics of that but ill try and get some when i fly back home.

Kyle.t91

i have a build page over on the turbo forums as well. it has more pics and there might be something helpful there for you as far as pics go. i have same name over there. close to same thread title as this one.

Kyle.t91

Got the hd2 kit installed tonight. Re wired the harness plug. I believe it will work.

Kyle.t91

A few pics

brandon6.0

iTrader: (32)

the hd-2 kit was worth installing. It dual feeds the direct clutches. makes trans last a lil longer lol.

How did u do the full manual wiring?

Kyle.t91

I got the info off sloppy wiki. If I'm not mistaken the way I have the plug wired up it should work. Some people say solder them together inside the case but your still doing the same thing just outside the case then it could save some people a bunch of time so they don't have to remove the pan. I just twisted the wires together, solder them and I'm going to put hat shrink over them. Then supply 12v to the pink and a switched ground to the brown. That's it

Kyle.t91

Ok I did some more reading and the wires for the pressure switch circuit A and B will tie to the ground side 1-2 shift solenoid and go to ground. Then circuit C will be tied to the ground side of the 2-3 solenoid and go to ground. 12v to pink and to power everything up then a switched ground on the brown wire(TCC) solenoid for lock up.