New Product

ATK TQHPGMBC-40 GM TH350/400 Converter, 3700-4100 Stall, Billet

New Product

#35020430

ATK TQHPGMBC-40 GM TH350/400 Converter, 3700-4100 Stall, Billet

3700-4100 RPM stall range for GM TH350/400 transmissions
10 in. diameter, 30-spline turbine, 1.703" crank pilot
Non-lockup design with anti-balloon plate

$475.00

/each

Factory Shipped

Quantity

Need Help? Call to Order

Add to a list

Select a vehicle to verify Fitment

Select Vehicle

Product Summary

TH350, TH400, 30 Input Spline Quantity, 10" Diameter

3700-4100 RPM stall range for GM TH350/400 transmissions
10 in. diameter, 30-spline turbine, 1.703" crank pilot
Non-lockup design with anti-balloon plate
Balanced & Furnace Brazed
New bearings and hubs, computer balanced, pressure tested for leaks

See more details

Key Specs

MFG. Part #	TQHPGMBC-40
Input Spline Quantity	30
Diameter	10"
Lockup Compatible	No
Stall Speed (RPM)	3700-4100

See more specs

Need To Know

Made to Order

This custom item will ship when completed

Need help?

855.313.9176

View the Help Center

Quick and Easy Returns

Return Policy

Installation Details

Installation Tips

Choosing the right torque converter starts with stall speed, the RPM the engine reaches before the converter stops slipping and starts moving the vehicle. The target is a stall speed within about 700 RPM of the engine's peak torque, so it launches at the front of its power band. Too low and the engine bogs off the line; too high and the converter slips, builds heat, and raises cruise RPM. Higher stall is not automatically better, so match the converter to the whole combination: an aggressive cam, numerically higher rear gear, and lighter vehicle favor more stall, while a mild cam, lower gear, heavier vehicle, or taller tire call for less. For towing, prioritize low-end torque multiplication over stall. Published stall ratings come from a standard test engine, so real-world stall runs higher behind engines making more torque and lower behind engines making less. Smaller diameters generally stall higher and react faster, while larger diameters offer better street manners and cruise. Before installing, confirm the input shaft spline count, bolt pattern, pilot hub diameter, mounting depth, and whether your transmission supports lock-up. Prime the converter with fresh ATF and make sure it is fully seated on all three engagements before bolting up. Add an external transmission cooler for higher-stall, towing, track, or hot-weather use.

WARNING: This product can expose you to chemicals including chromium (hexavalent compounds), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Have a Question?

Call one of our U.S.-based customer service professionals.

Tech Support - Opens at NaNpm (UTC)

ATK Engines TQHPGMBC-40 Details

This is our toughest street/strip converter. Along with all new components these units also feature anti ballooning plate(s) & furnace brazed pumps & turbines. These converters are designed to handle nitrous, transbrake or blower applications. Rated to 800HP, it is the perfect converter to drive to the track and compete.

Features:

Fits GM TH350/400 automatic transmissions
10 in. diameter converter
30-spline turbine (input shaft)
3700-4100 RPM stall range
1.703" crankshaft pilot
Mounting: Dual Bolt Pattern
Mounting style: Mounting Ring
Non-lockup converter
Anti-balloon plate
Balanced & Furnace Brazed

We have honed our reman torque converter operation to optimize a steady outflow of a variety of products by using & adopting standard operating procedures to supply automotive, high-performance, heavy-duty and industrial converters.

Guides & Documents

Warranty (ATK Engines)

Technical Information (ATK Engines)

CA Prop 65

ATK Engines TQHPGMBC-40 Specifications

KEY SPECS
MFG. Part #	TQHPGMBC-40
Brand	ATK Engines
Input Spline Quantity	30
Diameter	10"
Lockup Compatible	No
Stall Speed (RPM)	3700-4100

GENERAL
Anti-Ballooning Plate	Yes
Balanced	Yes
Crank Pilot Diameter	1.703"
Furnace-Brazed	Yes
Torque Converter Bolt Circle	Dual Pattern
Use with Power Adder	Yes
Use with Trans Brake	Yes
GTIN Code	00653517745744
Mounting Hardware Type	Mounting Ring
Torque Converter Use	Performance

Ratings & Reviews

Be the first to write a review.

Questions & Answers

Be the first to ask a question.

Fitment

1965-1985 Avanti II

1985-1990 Bentley Continental

1971-1984 Bentley Corniche

1984-1991 Bentley Eight

1981-1991 Bentley Mulsanne

1968-1976 Bentley T1 Series

1977-1980 Bentley T2 Series

1988-1990 Bentley Turbo R

1973-1975 Buick Apollo

1971-1973 Buick Centurion

1973-1981 Buick Century

1964-1983 Buick Electra

1970-1983 Buick Estate Wagon

1965-1967 Buick Gran Sport

1970-1972 Buick GS

1964-1983 Buick LeSabre

1973-1983 Buick Regal

1964-1978 Buick Riviera

1975-1980 Buick Skyhawk

1965-1979 Buick Skylark

1965-1969 Buick Special

1966-1972 Buick Sportwagon

1964-1969 Buick Wildcat

1987-1990 Cadillac Brougham

1965-1976 Cadillac Calais

1964-1983 Cadillac Commercial Chassis

1965-1982 Cadillac DeVille

1964-1966 Cadillac Eldorado

1965-1984 Cadillac Fleetwood

1964 Cadillac Series 60 Fleetwood

1964 Cadillac Series 62

1964 Cadillac Series 75 Fleetwood

1976-1978 Cadillac Seville

1975-1982 Checker Marathon

1969-1974 Checker Taxicab

1965-1975 Chevy Bel Air

1965-1972 Chevy Biscayne

1969-1990 Chevy Blazer

1969-1972 Chevy Brookwood

1975-1986 Chevy C10

1964-1986 Chevy C10 Suburban

1988-1990 Chevy C1500

1975-1986 Chevy C20

1964-1986 Chevy C20 Suburban

1988-1990 Chevy C2500

1975-1986 Chevy C30

1988-1990 Chevy C3500

1967-1981 Chevy Camaro

1966-1984 Chevy Caprice

1965-1972 Chevy Chevelle

1968-1981 Chevy Corvette

1965-1984 Chevy El Camino

1975-1990 Chevy G10

1975-1990 Chevy G20

1969-1974 Chevy G20 Van

1975-1990 Chevy G30

1965-1984 Chevy Impala

1975-1986 Chevy K10

1964-1986 Chevy K10 Suburban

1988-1990 Chevy K1500

1975-1986 Chevy K20

1964-1986 Chevy K20 Suburban

1988-1990 Chevy K2500

1977-1986 Chevy K30

1988-1990 Chevy K3500

1975-1986 Chevy K5 Blazer

1969-1972 Chevy Kingswood

1973-1976 Chevy Laguna

1973-1983 Chevy Malibu

1970-1984 Chevy Monte Carlo

1975-1980 Chevy Monza

1969-1978 Chevy Nova

1975-1990 Chevy P30

1964-1967 Chevy P30 Series

1987 Chevy R10

1987-1988 Chevy R10 Suburban

1989-1990 Chevy R1500 Suburban

1987-1988 Chevy R20

1987-1988 Chevy R20 Suburban

1989 Chevy R2500

1989-1990 Chevy R2500 Suburban

1987-1988 Chevy R30

1989-1990 Chevy R3500

1969-1972 Chevy Townsman

1987 Chevy V10

1987-1988 Chevy V10 Suburban

1989-1990 Chevy V1500 Suburban

1987 Chevy V20

1987-1988 Chevy V20 Suburban

1989-1990 Chevy V2500 Suburban

1987-1988 Chevy V30

1989-1990 Chevy V3500

1971-1977 Chevy Vega

1965-1989 Excalibur Phaeton

1975-1978 GMC C15

1975-1978 GMC C15 Suburban

1968-1974 GMC C15/C1500 Pickup

1968-1974 GMC C15/C1500 Suburban

1979-1990 GMC C1500

1979-1986 GMC C1500 Suburban

1975-1978 GMC C25

1975-1978 GMC C25 Suburban

1967-1974 GMC C25/C2500 Pickup

1968-1974 GMC C25/C2500 Suburban

1979-1990 GMC C2500

1979-1986 GMC C2500 Suburban

1975-1978 GMC C35

1968-1974 GMC C35/C3500 Pickup

1979-1990 GMC C3500

1978-1984 GMC Caballero

1975-1978 GMC G15

1979-1990 GMC G1500

1975-1978 GMC G25

1979-1990 GMC G2500

1975-1978 GMC G35

1967-1974 GMC G35/G3500 Van

1979-1990 GMC G3500

1970-1990 GMC Jimmy

1975-1978 GMC K15

1975-1978 GMC K15 Suburban

1966-1974 GMC K15/K1500 Pickup

1967-1974 GMC K15/K1500 Suburban

1979-1990 GMC K1500

1979-1986 GMC K1500 Suburban

1975-1978 GMC K25

1975-1978 GMC K25 Suburban

1967-1974 GMC K25/K2500 Pickup

1968-1974 GMC K25/K2500 Suburban

1979-1990 GMC K2500

1979-1986 GMC K2500 Suburban

1977-1978 GMC K35

1970-1974 GMC K35/K3500 Pickup

1979-1990 GMC K3500

1987 GMC R1500

1987-1990 GMC R1500 Suburban

1987-1989 GMC R2500

1987-1990 GMC R2500 Suburban

1987-1990 GMC R3500

1971-1977 GMC Sprint

1987 GMC V1500

1987-1990 GMC V1500 Suburban

1987 GMC V2500

1987-1990 GMC V2500 Suburban

1987-1990 GMC V3500

1977-1979 Jaguar XJ12

1977-1992 Jaguar XJS

1974-1979 Jeep Cherokee

1972-1979 Jeep CJ5

1972-1975 Jeep CJ6

1976-1979 Jeep CJ7

1972-1979 Jeep DJ5

1965 Jeep J-200

1966-1973 Jeep J-2500

1966-1973 Jeep J-2600

1966-1969 Jeep J-2700

1966-1968 Jeep J-2800

1964-1965 Jeep J-300

1966-1970 Jeep J-3500

1966-1970 Jeep J-3600

1966-1970 Jeep J-3700

1966-1968 Jeep J-3800

1971-1973 Jeep J-4500

1971-1973 Jeep J-4600

1970-1973 Jeep J-4700

1970-1973 Jeep J-4800

1974-1979 Jeep J10

1974-1979 Jeep J20

1966-1973 Jeep Jeepster

1965 Jeep Truck

1965-1979 Jeep Wagoneer

1965-1971 Oldsmobile 442

1965-1983 Oldsmobile 98

1971-1983 Oldsmobile Custom Cruiser

1968-1981 Oldsmobile Cutlass

1978-1984 Oldsmobile Cutlass Calais

1981-1983 Oldsmobile Cutlass Cruiser

1975-1980 Oldsmobile Cutlass Salon

1975-1984 Oldsmobile Cutlass Supreme

1976 Oldsmobile Cutlass Tiara

1967-1968 Oldsmobile Delmont 88

1968-1983 Oldsmobile Delta 88

1965-1972 Oldsmobile F85

1973-1979 Oldsmobile Omega

1965-1980 Oldsmobile Starfire

1968-1975 Oldsmobile Vista Cruiser

1968-1971 Pontiac Acadian

1975-1977 Pontiac Astre

1965-1984 Pontiac Bonneville

1965-1981 Pontiac Catalina

1967-1970 Pontiac Executive

1967-1981 Pontiac Firebird

1973-1980 Pontiac Grand Am

1975-1983 Pontiac Grand LeMans

1965-1984 Pontiac Grand Prix

1971-1978 Pontiac Grand Safari

1971-1975 Pontiac Grandville

1966-1973 Pontiac GTO

1965-1976 Pontiac Laurentian

1965-1981 Pontiac LeMans

1965-1984 Pontiac Parisienne

1977-1979 Pontiac Phoenix

1965-1966 Pontiac Star Chief

1976-1980 Pontiac Sunbird

1965-1970 Pontiac Tempest

1971-1977 Pontiac Ventura

1975-1987 Rolls-Royce Camargue

1971-1985 Rolls-Royce Corniche

1986-1991 Rolls-Royce Corniche II

1968-1969 Rolls-Royce Phantom

1968-1976 Rolls-Royce Silver Shadow

1977-1980 Rolls-Royce Silver Shadow II

1981-1991 Rolls-Royce Silver Spirit

1981-1991 Rolls-Royce Silver Spur

1977-1980 Rolls-Royce Silver Wraith II