Assault Torque Converter: The 7 Best Options, Ranked by Real Buyer Feedback

This converter earned its modest ranking because of its reliable mild street driving manners. It features a conservative 2000-2200 stall paired with a large 12 inch diameter, making it a sensible match for standard cruising.

In my opinion, this is the safe choice for anyone who wants to avoid an overly loose pedal feel around town. I would advise against putting this behind a heavy cam, as it lacks the high-rev slip needed for aggressive launches.

Track enthusiasts building a weekend warrior will find a lot to like here. It relies on a tighter 10 inch diameter and a higher 2700-3000 stall to help your heavy transmission launch with genuine authority.

I think this unit strikes a fine balance for anyone running a Turbo 400 at local drag strips. You will sacrifice some low-speed fuel economy in heavy traffic, but that is the inevitable trade-off for a proper strip setup.

An unusual 10 inch diameter paired with a mid-range 2200-2800 stall gives this unit a surprisingly aggressive bite for a street converter. It bridges the gap between lazy daily driving and serious track machinery quite well.

I find this specification deeply appealing for anyone building a spirited cruiser that still sees plenty of weekend asphalt. Just remember that smaller diameter converters build heat faster, so adding an auxiliary transmission cooler is non-negotiable in my book.

The most common complaint about this unit involves excessive slip during low-speed neighborhood driving, but that is simply the nature of a 3200-3500 stall. It uses a compact 10 inch diameter to flash high and hard, which makes it a favorite for serious strip builds.

I would never recommend this aggressive converter for a daily commuter car because it demands high revs to get moving. If your car lives its life at wide-open throttle, however, the performance payoff on the top end is massive.

Stepping up slightly from the milder baseline model above, this unit introduces a slightly wider 2200-2600 stall while retaining the stable 12 inch diameter. That combination makes it my absolute favorite choice for a balanced all around setup that handles both highway cruising and weekend fun.

I rank this as the top pick because it avoids the harshness of high-stall units while still offering a lively launch. You will not win any national drag racing titles with a non lock-up converter of this spec, but your daily commute will remain smooth and civilized.

This unit built its reputation in the racing community as a hard-hitting option for high-revving track cars. It features an extreme 3800-4200 stall and a specialized 30 spline count built specifically for dedicated competition.

I believe this is way too radical for street duty, but it delivers the exact slip required for heavily built race engines. You must pair this with deep rear gears to prevent overheating, otherwise you will cook your transmission fluid within a single afternoon.

This converter earned its strong position through its exceptional high performance street capability. It relies on a responsive 2700-3000 stall and a compact 10-3/4 in diameter to deliver instant power when you step on the gas.

I really like how this unit wakes up a lazy street engine without demanding constant high-RPM maintenance. The higher slip means your highway cruising RPMs might sit a bit higher than stock, so keep your rear axle ratio in mind before pulling the trigger.