ATF any real world experiences with Loosing up a convertor?

Eric Merryfield · 12-16-2020, 11:05 AM

Test Pig:

The mighty Gremllin, currently running Amalie Type F, which per their spec sheet says is 10-20 weight.

Per the chasis dyno wants 500 looser on the RPM, which is obviously a ton, and not going to happen with just fluid, but with a low HP beast like the Gremlin, we might see more of an effect of the fluid than say your standard 635 HP 396 stocker.......

Reflashing this convertor, too risky. Have a known good enough thing here.

I know just about all the info on the site is about using thicker fluid to lower stall, I'm looking to increase stall as much as possible.

I believe specific gravity is likely the ultimate factor in stall,

So for my type F, using the formula, 141.5/API of 31.5 plus 131.5=.8498

a thinner fluid like their Dexron VI syntethetic with a API of 35 would be a .8681 SG

This is 1.0215% thinner than the type F.

The ATI 0w-8 weight might be a option, I know there are other synthetic fluids out there with real thin weights.

Eric

12-16-2020, 11:05 AM	#1
Eric Merryfield Senior Member Join Date: Apr 2008 Posts: 872 Likes: 1 Liked 502 Times in 130 Posts	ATF any real world experiences with Loosing up a convertor? Test Pig: The mighty Gremllin, currently running Amalie Type F, which per their spec sheet says is 10-20 weight. Per the chasis dyno wants 500 looser on the RPM, which is obviously a ton, and not going to happen with just fluid, but with a low HP beast like the Gremlin, we might see more of an effect of the fluid than say your standard 635 HP 396 stocker....... Reflashing this convertor, too risky. Have a known good enough thing here. I know just about all the info on the site is about using thicker fluid to lower stall, I'm looking to increase stall as much as possible. I believe specific gravity is likely the ultimate factor in stall, So for my type F, using the formula, 141.5/API of 31.5 plus 131.5=.8498 a thinner fluid like their Dexron VI syntethetic with a API of 35 would be a .8681 SG This is 1.0215% thinner than the type F. The ATI 0w-8 weight might be a option, I know there are other synthetic fluids out there with real thin weights. Eric __________________ Eric Merryfield 1883 STK