spec'ing out a torq converter? HOW??

daturbosix

Forum Sponsor
TCG Sponsor
Joined
Mar 2, 2008
Messages
11,751
Reaction score
128
Location
Aurora
im trying to be a cheapo and spec out my own converter for my 5.3/80e swap in my truck...

planning on calling up a local converter company to have it built after i figure out what i want/need.

3900lbs
28" tire
3.42 gear(might be going 3.73)

cam only 5.3L
Camshaft:
Lift: 0.585"/0.585"
Duration 0.050": 228°/230°
Advertised Duration: 283°/286°
Lobe Separation: 112°
RPM Range: 2,500-6,500 RPM

95% sure i want to keep lockup. i have no clue what the benefit would be not to have it.
 

DEEZUZ

Escrow shortage crew
Donating Member
Joined
Nov 20, 2008
Messages
44,602
Reaction score
556
Location
NWI
Umm, don't you match the cam and converter?
 

daturbosix

Forum Sponsor
TCG Sponsor
Joined
Mar 2, 2008
Messages
11,751
Reaction score
128
Location
Aurora
Can't respond or edit with my full post for whatever reason
 

Mook

El Presidente
Admin
Joined
May 23, 2007
Messages
163,747
Reaction score
1,717
Location
Elgin
I'll edit the post in a few.
 

10thSVT_03

DRRRT PROSPECT
Joined
Feb 28, 2009
Messages
2,093
Reaction score
2
Don’t you call the company and they ask you the specs of the motor etc.
 

LikeABauce302

5.0 ftw
Joined
Aug 27, 2013
Messages
1,613
Reaction score
23
Location
South suburbs
Most companies have a form you have to fill out listing cam specs, gearing, tire size, vehicle weight, engine mods, and any Dyno numbers if available,
 

daturbosix

Forum Sponsor
TCG Sponsor
Joined
Mar 2, 2008
Messages
11,751
Reaction score
128
Location
Aurora
Don’t you call the company and they ask you the specs of the motor etc.
If I go through Circle D or Yank, yes.
I want to give it a try going through a local converter rebuilding company or I would have to tell them what to do
 

Great White Drake

You used to call me on my cell phone
Joined
Jun 23, 2010
Messages
4,627
Reaction score
151
How easy is it to drop the trans? If it’s easy, go ahead and cheap out. You thinking of using Midwest? “Free restalls”

Cheaping out on a converter is something I’ll never understand. The cam is the brain of the motor, consider the converter the nervous system. It transfers whatever the brain tells it to do.
 

willizm

Ho fuckin Ho!
Joined
May 13, 2009
Messages
10,531
Reaction score
86
Location
Saint John, IN
It seems as though people go through a ritual process of designing a converter around their exact specifications and need. Meanwhile I just picked up an off the shelf Pro Yank 3400 and works fine. I think people over think this too much. Same with custom spec cam shafts. Most vendors have their go to grinds but if it makes the customer feel special that they have a custom grind I suppose it helps them to sleep better at night.
 

DEEZUZ

Escrow shortage crew
Donating Member
Joined
Nov 20, 2008
Messages
44,602
Reaction score
556
Location
NWI
Yup. This build is nothing out of the ordinary
 

Great White Drake

You used to call me on my cell phone
Joined
Jun 23, 2010
Messages
4,627
Reaction score
151
It seems as though people go through a ritual process of designing a converter around their exact specifications and need. Meanwhile I just picked up an off the shelf Pro Yank 3400 and works fine. I think people over think this too much. Same with custom spec cam shafts. Most vendors have their go to grinds but if it makes the customer feel special that they have a custom grind I suppose it helps them to sleep better at night.
I went with their PAS 3400 after calling them. I’ve heard nothing but good things about them. But not cheap though.
 

daturbosix

Forum Sponsor
TCG Sponsor
Joined
Mar 2, 2008
Messages
11,751
Reaction score
128
Location
Aurora
How easy is it to drop the trans? If it’s easy, go ahead and cheap out. You thinking of using Midwest? “Free restalls”

Cheaping out on a converter is something I’ll never understand. The cam is the brain of the motor, consider the converter the nervous system. It transfers whatever the brain tells it to do.
there are so many places to call for them. just think about all the local places that do "stock" converters for your 1995 e350 van... theyre like $150 bucks lol.

midwest, some dude named Dino, from out in tinley i think, precision of new hampton...
 

daturbosix

Forum Sponsor
TCG Sponsor
Joined
Mar 2, 2008
Messages
11,751
Reaction score
128
Location
Aurora
fuck, if i had a stocker, id run it for the time being, but i atleast have to buy one, because i dont own one at this time. so might as well ask for it to be made to stall where i need it to
 

Pressure Ratio

....
Donating Member
Joined
Nov 11, 2005
Messages
16,121
Reaction score
181
Location
Glen Ellyn
I agree with having the correct stall for the application. I have watched people be cheap and buy off the shelf shit or stuff from local rebuilders. Then have no luck getting the car to run right.The spend money on more of their converters and changing them out. Still not having luck. In the long run, they spend the same amount of money and are still not where they should be. But this is geared towards cars with power.

Since you are doing a more tame street truck you could probably pick out a cheap converter and be fine. Just be aware most converters that have an advertised stall will be at a much lighter weight than what you will have. So the weight will make it stall higher. A good converter with a higher stall speed and still have great driveability. As in let off the brakes and the car moves. Give it some gas and it moves fine. No need to mash the gas to get it going. But if you do mash the gas you get the advertised stall speed real quick. Plus a higher stall speed is fine if you keep the lockup. Once it locks up it will drive just like stock and run cooler. Plus get good MPG since it isn't slipping all the time.

Call your converter place up and see what they say. If they seem clueless about custom stuff either buy a cheap stockish converter or call someone else that will take your specs into account and build one that should perform well in the truck.

Yank sells a couple affordable truck converters. Might be worth a call to them to see what they say/recommend. Then go from there.
 

1quick

Well-known member
Donating Member
Joined
Jan 29, 2008
Messages
19,780
Reaction score
254
Location
coal city
Fti will build one to your specs, call them they ask a few questions about power cam and what not and throw one together for your needs, I want to say the one I got from them was around $950
 

1quick

Well-known member
Donating Member
Joined
Jan 29, 2008
Messages
19,780
Reaction score
254
Location
coal city
Didn’t see the going cheap, ask on sloppy mechanics Facebook and order what they tell you I’m sure there is a stock one that would fit your application
 

Spivitz

The Throttle is ur friend
Donating Member
Joined
Oct 5, 2012
Messages
22,390
Reaction score
366
Location
60191
I haz a decent spec'd cam/verter combo which "can" = 1.5 60 foot times...
Ssssssh
 

daturbosix

Forum Sponsor
TCG Sponsor
Joined
Mar 2, 2008
Messages
11,751
Reaction score
128
Location
Aurora
Didn’t see the going cheap, ask on sloppy mechanics Facebook and order what they tell you I’m sure there is a stock one that would fit your application
ha. matt happle himself went through a REAL converter company. so idk about that. when i searched it people always posted links from circle d, yank, ptc, ect...

im like :io: lol

however, i heard that a 2500 express van that had a 4.8/80e combo would have a 2400stall speed converter. i still have to verify that.
 

Create an account or login to comment

You must be a member in order to leave a comment

Create account

Create an account on our community. It's easy!

Log in

Already have an account? Log in here.

Top Bottom