4l85E Swap

[oneg360]

Who are you guys using for converter for your 4L80 Swaps? I have had good luck with Circle D in the past on my LS stuff. I know PTC is preferred on here any pro or cons? Circle D Vs PTC for a L/U converter?

 

[BEATAV8]

@chopped39 what’s in yours?

 

[HalfDozIN]

I have a much milder setup than you, have been fighting other problems, and have yet to really put down a solid number yet. This information is probably basically useless to you because of all that, but I think my Circle D has been doing a fine job so far. It's a 245mm pro series triple disc, 3c stall. On a stock bottom end with home ported irons and a 212 flat tappet, it stalls 2700 at 0 psi, 3400 at 8-9 psi before my vacuum brakes give up, and drops from 5700 back to between 5000-5100 on both shifts, according to my pl files, at whatever power it takes to trap 119-120 in a full weight car with a full weight driver. I ran a string of mid 11's a few months ago, with mediocre 1.7 60' times due to a crack in a header collector opening up on me. Locking at around 900 feet each time.

 

[oneg360]

I have a much milder setup than you, have been fighting other problems, and have yet to really put down a solid number yet. This information is probably basically useless to you because of all that, but I think my Circle D has been doing a fine job so far. It's a 245mm pro series triple disc, 3c stall. On a stock bottom end with home ported irons and a 212 flat tappet, it stalls 2700 at 0 psi, 3400 at 8-9 psi before my vacuum brakes give up, and drops from 5700 back to between 5000-5100 on both shifts, according to my pl files, at whatever power it takes to trap 119-120 in a full weight car with a full weight driver. I ran a string of mid 11's a few months ago, with mediocre 1.7 60' times due to a crack in a header collector opening up on me. Locking at around 900 feet each time.

Thanks! I’ve been happy with PTC in the pass. It’s been a little bit of a pain getting everything to complete the swap this time of year.

 

[HalfDozIN]

I definitely understand that. This season didn't pan out how I'd hoped, but that's just how it goes. I'd like to see some 10 second slips, and I think I'm onto it now. I needed a taller tire also, so I had to lock it to avoid just plain running out of rpm. I think it will et well unlocked, but I'll have to try it both ways to compare directly. The rpm numbers seem to be in line with what is recommended for a setup like mine. I had it as a '4c' at first, I could get around 3600 out of it then. It was a little loose for this car. Their 1 free re-stall window went from a year to 6 months during the first year I owned it, and I didn't know until I went to send it back. Not a major deal, but something of note with my experience nonetheless.

 

[chopped39]

@chopped39 what’s in yours?

Its a lock up ptc from Dusty. Prasad talked to Dusty and ordered it

 

[oneg360]

I went with a Circle D converter Single Disc Lockup 245 with mods to remove mass. 3400 Stall. Transmission almost finished here are a few pics. I’m sure it’s more stuff I'm probably forgetting. Mag-HYTECH Deep Pan. Just wanted to share my build with you guys.


Sonnax no walk bushing
Rollerized rear bearing
Borg Warner NEW band
5 pinion planets
Vasco intermediate shaft
High temp sealing rings
Hd intermediate return plate
Aluminum 34 element drum
Borg Warner high energy clutches (4)
Modified aluminum direct piston
Modified bushing and sleeved forward drum - designed to hold up better
2001-down black roller overdrive drum
Sonnax billet forward hub
Sonnax overrun kit
Sonnax wide front pump stator bushing
Superior kit with my lube mods
300m input shaft