Black Friday / Cyber Monday Savings!     $25 off $250 | $50 off $500 | $75 off $750 | $100 off $1000      Promo: BESTDEAL
$25 off $250 | $50 off $500 | $75 off $750 | $100 off $1000
Promo: BESTDEAL
Products to Compare (max of 3)
X
Compare These Parts
Talk to the Experts. Call 800.979.0122, 7am-10pm, everyday.
Since 1952
in
in
Talk to the Experts. Call 800.979.0122
Shop By
Support
Account
Street Race Truck More... The Toolbox

Assembling a GM Trans Cooler Line Kit - 1967 Chevelle

11/17/2020
Cool it.

If you’ll recall my tirades in the past about my dislike for making steel hard lines, you’ll also recall that the ones I do generally come out pretty nice. That’s a sham. They came out nice because those lines are all in very accessible areas and didn’t need to snake through a bunch of other obstacles. Obstacles that are hot, or dangerously sharp, or spinning I built those brake lines on the workbench with careful measurement and trial and error (many errors).

As a teenager building my disco Nova, trans cooler lines were my first experience with scratch building a set of lines. To do them cleanly, parallel and safely routed, is a work of art. If you can make them well, Congratulations Rembrandt! My stuff looks like a Picasso. A little off, asymmetrical and weird. Fortunately, I started stocking a stainless braided kit from Gotta Show a number of years ago. We sell a lot of them. Now I see why.

The kit contains a length of PTFE line with 2 pre-terminated ends, flare to ANfFittings to engage the fittings in the transmission and 2 AN fittings to hook to elbows at the radiator.

I had not, to date, assembled any PTFE hose or fittings. As I found out there’s not much to it, but you definitely need to plan out your cuts and follow steps carefully to get nice results.

I started by figuring out my routing and just how long the longer hose would be. Since both ends are pre-terminated, you’ll need to carefully measure how much you’ll need for both lines. I found that there was plenty of extra, but you’d hate to get caught short if your car is longer or you routed them differently.

One thing that’s indispensable is strong, high quality electrical or stranded packing tape. Before you try to cut the hose, wrap it in tape to hold the braided fibers in place. If you don’t, it’s a lot like making a perfect double flare on a hard line and remembering that you forgot to put the flare nut on first.

Taping the braid also helps minimize how much you’ll bleed. I mean, you’re still going to poke your fingertips and you’re going to bleed. Maybe just not as much if you use the tape wisely. Yes, that’s my blood on the body washer in that photo. I regret nothing.

Do you have the spot you want to cut all taped up? Good, now you’re gonna think I’m crazy, but find the sharpest, heaviest, straight cold chisel you have and a big hammer that you’re really good with.

I tried the hose/cable cutting shears and they worked once, really well, but the stainless ruined the cutting edge and that was that. Now a couple of strands always slip between the blades.

The heavy chisel method (or a Beverly shear) work quickly, don’t melt the Teflon like a cutoff wheel and it doesn’t leave any debris inside the line. Use a thick plate of steel or aluminum on the floor, set the hose in place, square off with the chisel and hit it HARD, one time.

Once you’ve made the cut you’ll see that the line is made from a thin walled Teflon tubing and a steel braided outer casing. Sometimes there’s a thin liner membrane between the two. In essence, the fitting connection is just a compression fitting. There’s a compression ring that captures and retains the inner line and an outer nut that retains the braided sheath.

I used Fragola fittings at the radiator with Speedway Motors flare to AN adapters. The Fragola fittings are finished in black and have a graceful 90 degree bend incorporated.

Slip the outer collar nut over the tape and remove the tape. I found that a little screwdriver worked well to spread the braid away from the wall of the plastic inner tubing. This is the part that will make you bleed. Be careful. After you’ve made enough room to slip the collar onto the tubing, insert it between the layers with the chamfer facing away from the fitting joint.

After you’ve ensured that the compression collar is nested completely on the Teflon tube and the braid is covering the outside of it, you can mate the halves of the fitting. I found later that a little dab of anti-seize at this point helps a ton with tightening the joint.

This step is much easier in a bench vice with AN jaw liners, also learned later. I didn’t want to disassemble the connections that were already finished at the transmission. So I terminated the radiator ends on the car.

All in all, the lines were easier to finish that I anticipated. I think I have the confidence needed to tackle the custom power steering hoses.

Products Featured in this Article

Related Articles

Upgrading Power Steering Pressure and Return Lines - 1967 Chevelle
by Jeff Karls - Posted in Tech
11/24/2020
Follow this guide to see how Jeff upgrades his power steering system. Learn how to cut and assemble a -6 AN hose and fittings for optimal connection to the power steering pump.
Installing a Transmission Crossmember - 1967 Chevelle
by Jeff Karls - Posted in Tech
11/10/2020
Learn about the G Force crossmember and how the symmetrical product design makes for a smooth installation on Jeff's 1967 Chevelle.
Choosing Redline Radial Tires - 1967 Chevelle
by Jeff Karls - Posted in Tech
11/2/2020
Follow along as Jeff chooses redline radial tires and steel wheels to get the perfect fit for his Chevelle. Learn how redlines are added to a set of Real Rodder mags for a consistent 60's theme.
Rear Wheel and Tire Installation - 1967 Chevelle
by Jeff Karls - Posted in Tech
10/26/2020
With the new housing and brakes installed, Jeff chooses new wheels and tires for his 1967 Chevelle. See how he gets the perfect fit with enough clearance for brakes, coilovers and even 15" wheels.
Wiring and Battery Cable Routing - 1967 Chevelle
by Jeff Karls - Posted in Tech
10/12/2020
This project consists of using welding cable to relocate a battery to the trunk of a 1967 Chevelle. Learn the benefits of using welding cable over normal battery cable and how line clamps are used to secure the wire to the frame rail.
Installing a Speedway Motors Wiring Kit - 1967 Chevelle
by Jeff Karls - Posted in Tech
10/8/2020
This Chevelle project gets rewired with a Speedway Motors wiring kit. Follow along as Jeff guides you through this application, starting with a good mounting location for the fuse box. Learn more on continuity, grounding and relays.
EFI Fuel Filter Installation - 1967 Chevelle
by Jeff Karls - Posted in Tech
10/6/2020
Jeff walks through how to install an EFI filter for his fuel system. See how to assemble conversion fittings to accurately plumb the fuel lines and tips on fuel line routing.
How to Install an EFI Fuel Tank - 1967 Chevelle
by Jeff Karls - Posted in Street Rod
9/29/2020
A step by step on how to install an EFI Fuel Tank kit in a 1967 Chevelle. Learn the benefits of using this kit including expanded fuel capacity and a 24 gallon tank.
Removing Paint on Car Body Panels - 1967 Chevelle
by Jeff Karls - Posted in Tech
9/22/2020
Follow along as Jeff demonstrates how to strip paint from the body panels of his 1967 Chevelle using a restorer porter cable tool. Learn how to save time by having the panels acid dipped to remove layers of paint.
Redline Radial Tire Application- 1967 Chevelle
by Jeff Karls - Posted in Tech
9/14/2020
Jeff chooses Redline Radial Tires and black powder-coated steel wheels for his 1967 Chevelle. See how he installs the tires with some helpful tips along the way.
Error
X
Note
X
Ok