Are there built in trans coolers in the radiator?

[68c10owner]

Originally Posted by davepl

Mine was purple. Sorry, that's all I remember but I bet it's a brand trademark for someone.

They make "loose" converters, holeshot converters, and tight converters... unless that's all just marketing.

My problem was that to get it to creep at all took a fair flash of the the throttle. Going up an incline meant you basically had to run the engine up to stall speed (so going up a ramp, you're at 3000rpm creeping).

Now it sounds like you've got a lot of cam - remember I am doing a mostly stock build. If you're building a street-strip truck and have a big cam then you're on a different path and nothing wrong with a loose converter. In fact you likely NEED one for a big cam.

A 3000 stall converter makes for a pretty spectacular launch if you can get it to hook up though! I had mine in a 4200lb car with a ZZ502 and a properly set up suspension and it launched straight with no wheelspin every time. Fun stuff.

On the street they can get annoying. But that's the price of going fast!

Don't go back to stock stall speed if you do have a big cam without considering the cam. I don't know what a "big" cam is, but if its more than maybe 224 duration @ 0.50? Somewhere around there you need a converter so it doesn't stall out in drive.

Big cam needs big stall speed. Big stall speed can be annoying. So big cams can be annoying. But they make top end power. No free lunch!

What you describe here are characteristics of a loose converter. It's not just marketing. It's the difference between a cheap converter and high end custom built converter.