I've been sweating bullets over my trans and converter. I had the trans gone through, not unnecessarily, when I lifted the heads. Shift kit was installed along with a new pump and 'race' clutches for a TH400. I bought and installed a new Derale trans cooler setup that I was told would be better than my budget Hayden (Imperial brand 243012) from Advanced Auto. The Derale 13700 is a double row tube type with it's own fan ($150) from Jegs). The Hayden was listed at $65 from Advance but discount codes dropped it to $48 and it's a bar and plate style. The fan is a decent ebay unit for $30.
The Derale was keeping the trans at 185-195 all the time and it would not let me run the sloppy transbrake only once from a cold start up. Obviousy that was not going to cut it. But I thought there was an issue with the trans and I don't have time to get it out, rebuilt again and reinstalled by 2 weeks from today. So for the 1st time I hooked the trans cooler to the radiator and the remote cooler. Still sucked *ss - 180-190 all the time. I was thinking of adding the old cooler in and having 3, but I decided to try swapping the Hayden for the Derale for quicker testing. Immediately 25-30 cooler all the time - PHEW!!!!!
I haven't pulled a trailer yet and I was worried that this was going to be the end of my entire trailer plan, after a week and $450 of trailer building. I want to say that I don't think the Derale unit is so bad, but rather the plate and bar style is much better than a tube style. Derale makes a plate and bar style setup, but yikes it's a pile of money.
Anyone that wants a budget deal, then the Hayden is a great bargain. Even though it sells as an Imperial from Advanced Auto, when you open the box you'll find a Hayden made in the USA part. It's almost shocking , but it makes me feel good as well.
Thought it was worth mentioning.
Anyone want to buy the Derale??? 😉