mrbeaubo

Alright I need help!!!

I have a new 200R4 that I'm in the process of putting into my 75, but have a couple of questions.

I have the following radiator from Dewitts:

http://www.dewitts.com/products/1973...ombo-automatic

I need completely new lines and my understanding is the stock TH400 lines from the tranny will work, so I am going to grab these most likely (let me know if I'm wrong):

http://www.summitracing.com/parts/rs...model/corvette

My main question is:

What stainless braided lines do I need to hook up to the radiator and what else am I going to need (ie: to couple to the hard lines, etc.)?

929nitro

I believe you will need to make minor modification for the mounting holes and you will need to wire for the lockout converter. There are posts on here for the wiring or you can buy a kit. I got a wiring kit from Bowtie Overdrive as well as a new crossmember for my 2004R conversion on my 75. Biggest advantage to crossmember is the exhaust goes under it as opposed to through it allowing you to drop exhaust in one piece if you needed to drop it.

mrbeaubo

Thanks for this!

Anyone have any thoughts on stainless braided lines from the radiator to the transmission hard lines?

mrvette

Unless it's a show car, don't bother with fancy lines, just use the stock ones....

mrbeaubo

10-4. I don't have the stock ones anymore, can you point me in the right direction?

mrvette

5' of 3/8 OD brake line from your parts house should work just fine, pay attention to the fitting to fit the trans, and make nice fair bends in the line, lay up next to the frame, and I would do hose connections on the cooling/radiator end, so cut trim to fit your install....

mrbeaubo

It's the hose connections from the radiator that I need help with. Does anyone know what size the ports on the radiator are, and what do I need on the opposite end to the hard line?

johnt365

I am in a similar boat. I have metal lines at the trans that are about 2.5 feet long or so. My plan is to use the Push-Loc hose and fittings to connect from the line to the radiator, then from radiator to aux cooler and then from aux cooler back to metal lines.

The blue Push-Lok I have seen is around 300 psi. and is around 3.50 a foot. You can use special push lock AN fittings.

mrbeaubo

Are those fitting approved for transmission fluid? PSI seems fine, but sometimes hoses are bad with the corrosiveness of transmission fluid.

johnt365

The guys at my local speed shop recommend it and Chris at CK Performance said guys been doin it for a long time.

donnie1956

Got a part number or vendor. I am getting ready to reinstall my 2004R and need new lines.

rogman16

My new lines came with all four pieces--2 (long lines) hook into the transmission, and 2 (short lines) hook into the rad... You'll only need the rubber hose and clamps to connect each line (autozone or oreilly's have these parts)... Certainly not the prettiest, but effective and fairly cheap...

Rogman

mrbeaubo

Autozone only had fuel hose, didn't trust for transmission line, so I ended up buying this:

donnie1956

[QUOTE=mrbeaubo;1582982654]Autozone only had fuel hose, didn't trust for transmission line, so I ended up buying this:

[/QUOTED
Did you just hose clamp your fittings?

mrbeaubo

[QUOTE=donnie1956;1582983078]I haven't done it yet, but that is my intention as I believe factory was that way!

diehrd

When I was in the trans business we always used copper lines , because you can cut , fit and flair them perfectly with ease. If you reuse lines or any coolers make sure they get flushed to remove any particles from last trans.

If you use a tranny cooler keep it by itself do not run to rad then to cooler run directly to cooler bypassing rad.

mrbeaubo

Thanks!

donnie1956

Is there a formula for sizing a oil cooler? Would like to route directly and bypass the radiator.

diehrd

There may be a rule of thumb but on cars we used a cooler like this one , you can go bigger but this one will do just fine

http://www.jegs.com/i/Flex-A-Lite/40...FUQw4AodBVEAqQ

CTVETTE78

Actually, it is 5/16" brake line, and the double flare fittings on these will fit the transmission perfectly. I bent up the cooling lines for my 2004R using two $6 pieces of line from the NAPA store.