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AUTO TRANS TORQUE CONVERTER

AUTO TRANS TORQUE CONVERTER

$648.00
$648.00
Sale Sold out

The B&M Holeshot Torque Converter is purpose-built for Chrysler 727 TorqueFlite automatic transmissions in 1962–1978 Mopar A-body, B-body, and E-body muscle cars. The legendary 727 is virtually indestructible, but the stock stall speed leaves your 340, 383, or 440's launch potential untapped.

This 11-inch converter delivers a stall speed of 2,400–2,800 RPM, perfectly matched to the torque curve of a mid-range small-block or big-block with headers and a performance cam. The hardened steel hub with precision-ground splines eliminates wobble that causes front pump failures in high-mileage 727s. Furnace-brazed fin construction keeps the converter round under sticky tires and high-stall launches. Rated for engines up to 450 HP.

In a 383-powered Road Runner or 340 Duster, the Holeshot puts the engine right at the sweet spot when the light turns green. The 2,400+ RPM stall means you leave at peak torque, not lugging through the bottom end. Smooth cruise characteristics—no excessive highway RPM—and the needle bearing assembly delivers years of reliable service.

Your Mopar deserves a launch as legendary as its engine. Install the B&M Holeshot and cut your 60-foot times. Order now.
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Frequently Asked Questions

What stall speed does this B&M torque converter have for my truck or muscle car?

The B&M torque converter stall speed varies by model, with the Holeshot series offering stall speeds from 2,000 to 3,200 RPM and the Traveler series offering lower stall speeds around 1,600 to 2,000 RPM for towing and daily driving. The converter is built with furnace-brazed fins and needle bearings for durability under high torque loads. Selecting the right stall speed depends on your camshaft power band, vehicle weight, and intended use.

Does the B&M torque converter work with a 700R4 or 4L60E transmission?

Yes, B&M torque converters are available with the correct input spline count, pump drive lugs, and pilot diameter to fit GM 700R4, 4L60E, TH350, and TH400 transmissions, as well as Ford C4, C6, and AOD applications depending on the specific part number. The converter lockup and clutch configuration must match your transmission's valve body type to ensure proper engagement. Always confirm your transmission model, flexplate bolt pattern, and crankshaft pilot size before ordering.

How does the B&M Traveler torque converter improve towing performance?

The B&M Traveler torque converter features a lower stall speed of 1,600 to 2,000 RPM that keeps the engine in its torque band while towing heavy loads, reducing transmission heat buildup by minimizing converter slippage. It includes a heavy-duty stator and needle bearing construction that withstands the constant load of towing without premature wear. The Traveler also provides a tighter fluid coupling at highway speeds for improved fuel economy compared to a stock converter.

What is the difference between the B&M Holeshot and the Traveler torque converter?

The B&M Holeshot torque converter is designed for performance applications with stall speeds between 2,000 and 3,200 RPM to allow the engine to reach its power band for quicker launches, while the Traveler series is built with a lower stall speed of 1,600 to 2,000 RPM for towing and daily driving with minimal heat gain. The Holeshot uses a stator with a higher torque multiplication ratio for improved off-the-line acceleration. Choosing between them depends on whether you prioritize launch performance or drivability.

Will this B&M torque converter bolt directly to my factory flexplate?

The B&M torque converter uses the standard mounting pad pattern that bolts directly to most factory and aftermarket flexplates with the appropriate torque converter bolts, which are typically 3/8-24 or 10mm x 1.5 thread depending on the application. The pilot diameter is machined to fit the crankshaft register in the back of the crank, ensuring concentric alignment during assembly. Always check the flexplate bolt circle and crankshaft pilot size for your specific engine before installation.

What transmission fluid should I use with a B&M performance torque converter?

B&M recommends using a high-quality Dexron III or Dexron VI automatic transmission fluid for their torque converters, or a synthetic ATF that meets the Mercon V specification for Ford applications. For high-stall applications producing excessive heat, synthetic transmission fluid provides better thermal stability and resistance to breakdown at temperatures above 250 degrees Fahrenheit. B&M also sells their own Trick Shift fluid formulation specifically designed for high-performance and race transmissions.