Th400 First drive impression.
TECH Enthusiast
Joined: Oct 2007
Posts: 530
Likes: 2
From: South Lyon, Michigan
What shifter do you have? You can wire the trans brake into the reverse light switch and get reverse, but I would use a toggle or something to shut it off at the track so if you go into neutral on the big end you don't accidently get reverse
My vote is a 35 spline 9 inch!
My vote is a 35 spline 9 inch!
Thread Starter
TECH Junkie
Joined: Jul 2015
Posts: 3,012
Likes: 48
It's not a clean neutral. And being a reverse valvebody, it would be near impossible to hit neutral or reverse on the big end. And being that there's no engine braking with these types of transmissions, I'm not sure why people like to go to neutral at the traps....because when you get off the gas the engine goes to idle by itself.
TECH Fanatic
Joined: Jun 2013
Posts: 1,163
Likes: 16
From: Avon, Ohio
Props on trying it out. How much do you have warped up into the full conversion? Interested to see what you think after a year or so with it.
As always, thanks for sharing!
Thread Starter
TECH Junkie
Joined: Jul 2015
Posts: 3,012
Likes: 48
This sounds accurate. My 150 traps 6 speed car felt 100% faster than my buddies 150 traps Auto, but his went mid 8's. Difference is you could take a nap in the passenger seat running that 8 LOL
Props on trying it out. How much do you have warped up into the full conversion? Interested to see what you think after a year or so with it.
As always, thanks for sharing!
Props on trying it out. How much do you have warped up into the full conversion? Interested to see what you think after a year or so with it.
As always, thanks for sharing!
Transbrake $425
Reman pump $140
Quicksilver shifter $300
Sfi flywheel and bolts $175 (I think, little fuzzy here)
Driveshaft $310
Crossmember with torque arm mount $260
Transb button $50
Transmission cooler $150
Braided steel lines and A/N fittings $150
Torque converter $1,022
Lokar dipstick $100
Building my first transmission, and it work like it's supposed to........PRICELESS!!!!
TECH Fanatic
Joined: Oct 2015
Posts: 1,280
Likes: 28
From: Pittsboro, IN
Thread Starter
TECH Junkie
Joined: Jul 2015
Posts: 3,012
Likes: 48
Took info from multiple sources, asked some questions in the transmission section on here....watched a few YouTube vids....and gleaned some info from other boards. Didn't use any books though, just took it apart and figured it out later.
HP Books "How to build and Modify TH400" is good but dated.
Don't laugh, but I use an old set of instructions form a B&M Trans kit I saved from the first one I did one many years ago as an assembly guide.
It's quite good.
If you keep the assemblies together and work on just one at a time, it helps.
I have Jake's shift kit. It is not bashful, 2-3 is very solid.
Jake also helped me with the intermediate 4 plate clutch and some other 4L80 parts.
I also did the pump mod. .110"orfice. Although someone had already put a reducer in there. I gather it was common for big trucks that had thrust bearing issues. Mine came from a 1972 C10. Converter pressure is 40-60 psi. It did not affect the way the converter works.
So I'm just waiting to break the input shaft or blow up the 2nd gear sprag at this point. Then these deals get expensive.....
Ron
Don't laugh, but I use an old set of instructions form a B&M Trans kit I saved from the first one I did one many years ago as an assembly guide.
It's quite good.
If you keep the assemblies together and work on just one at a time, it helps.
I have Jake's shift kit. It is not bashful, 2-3 is very solid.
Jake also helped me with the intermediate 4 plate clutch and some other 4L80 parts.
I also did the pump mod. .110"orfice. Although someone had already put a reducer in there. I gather it was common for big trucks that had thrust bearing issues. Mine came from a 1972 C10. Converter pressure is 40-60 psi. It did not affect the way the converter works.
So I'm just waiting to break the input shaft or blow up the 2nd gear sprag at this point. Then these deals get expensive.....
Ron
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TECH Enthusiast
Joined: Jun 2013
Posts: 513
Likes: 1
From: Moose Jaw SK, Canada
I'm glad you like it. I was extremely happy making the switch when my car was just cam only.. Lol
It's definitely the 2.73s giving you the mushy feeling with the converter, but if it cruises nicely on the highway.. It's probably a worthwhile compromise to make. I look forward to track times!
It's definitely the 2.73s giving you the mushy feeling with the converter, but if it cruises nicely on the highway.. It's probably a worthwhile compromise to make. I look forward to track times!
Thread Starter
TECH Junkie
Joined: Jul 2015
Posts: 3,012
Likes: 48
I'm glad you like it. I was extremely happy making the switch when my car was just cam only.. Lol
It's definitely the 2.73s giving you the mushy feeling with the converter, but if it cruises nicely on the highway.. It's probably a worthwhile compromise to make. I look forward to track times!
It's definitely the 2.73s giving you the mushy feeling with the converter, but if it cruises nicely on the highway.. It's probably a worthwhile compromise to make. I look forward to track times!
Last edited by Game ova; Mar 1, 2017 at 12:48 AM.
A 9 sec car now bam