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| 400 Level 2 | 400 Level 3 | 400 Level 1 and 4 |
| 350 Level 2 | 350 Level 3 | 350 Level 1 |
| Performance Parts | Torque Converters | Price Chart CONTACT |
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GM
or Chevy
High Performance
400 Street / Strip Transmissions
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Level 2
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This high performance 400 transmission comes with a high performance Fairbanks TransAction Kit installed for firmer shifts and more holding force on all the clutches. The front band is replaced with an Alto Kevlar band. The stock intermediate sprag is replaced with a 34 element sprag with over twice the holding power of the stock sprag. As part of this package deal you get a heavy duty / high performance balanced stall converter with furnace brazed fins and bearing construction for added strength (#7 see below). This torque converter stalls at 2600 RPM for a faster take off. We also have this same converter in 1800 and 2000 stall speeds. You get your choice of a 4 inch 32 spline (bolt-on yoke or not) tail housing or a 9 inch 27 spline tail housing. When ordered with the 9 inch tail housing and 27 spline output shaft your drive shaft may be able to be reused by making it shorter. It comes with an intermediate 4 clutch Power Pack. Good for motors up to 800 horse power (transmission). Good for motors up to 800 horse power (transmission). We ran one of these in our 1200 horse power drag truck for three years before it finally broke a gear and that was without the intermediate Power Pack. (We've tested 400 transmissions against 350 transmissions and the 400 transmissions were faster.) This high performance 400 package deal can be yours for $1249.00 without a trade-in. The freight charge to you will be $50.00 to $200.00 in most cases after the freight discount. This is a 2WD transmission, add $100.00 for 4WD case. |
Buy Online Here

The above stall converter sold separately for $218.00. Testimonials Price Chart
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Level 3
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Buy Online Here
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GM
or Chevy
High Performance
350 Street Transmissions
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Level 2

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The 350 Raptor street transmission comes with a high performance Fairbanks TransAction Kit installed. The front band is replaced with an Alto Kevlar band. The stock intermediate roller clutch outer race is replaced with a Sonnax hardened race for added strength. This is the main weak point on the 350 transmission. The low / reverse roller clutch is replaced with a late model 700R4 roller clutch. You have your choice of a 6 inch or 9 inch tail. No trade-in needed on this one. Add a stall converter to this baby and you have yourself a high performance street transmission. Good for motors up to 400 horse power. This transmission can be yours for $887.00 without a trade-in. As an added bonus, add a high performance / heavy duty 2600 RPM stall converter for only $208.00 (#7). This converter gives a faster launch and has furnace brazed fins, is balanced and has all bearing construction. The freight on both in most cases is $50.00 to $200.00. This is a 2WD transmission. |
Every Transmission Tested on the PATC Dyno.
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| 350 / 400 Transmissions |
| Performance Parts |
| and |
| Stall Converters |


Ask about our quantity and transmission builder parts discount.
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Combo Kits
#K7. Fits all GM TH400 transmissions 1965 up. You get the #5-7 Alto Red Eagle master rebuild kit with an intermediate Red Eagle Power Pack and all Kolene steels plus the # 20812 Fairbanks TransAction Kit that work on all 6 and 7 check ball cases. This kit has 4 levels to chose from. Level 4 delivers full manual control or manual low at any speed which increases the overall performance level. This is the same kit we use in the 400 Terminator transmission. Both for $230.00. SAVE $22.00 HERE !, 8.7% OFF
#K7SD. Add the 34 element intermediate sprag and drum kit to the above #K7 Combo Kit. The TH400 34 element PATC sprag replaces the stock 16 element unit, increasing the torque capacity by 110%. You must buy the above #K7 Combo Kit to get this price. Cost $169.00. SAVE $20.00 HERE !, 10.6% OFF
#K13. Fits all 1969 to 1980 GM Turbo 350 transmissions. You get the #5-8 Alto Red Eagle master kit with all red clutches and Kolene steels, and a Superior #31006 four stage TransAction kit. This TransAction kit includes the oil transfer plate to give the best 3rd gear available. Stage 4 delivers full manual control or manual low at any speed which increases the overall performance level. To top this package off you get a #13 Sonnax 350 hardened intermediate roller clutch outer race. This is a weak point on the 350 transmissions. This is the master kit we use in our level 3, 350 Mega Raptor transmissions. All three for $284.00. SAVE $31.00 HERE !, a full 10.5% OFF
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Combo Kit Rules: It doesn't get any better than this folks, now you can have your parts and save money too. You may be eligible for other discounts on any parts needed for your rebuild, if you buy them at the same time as the master rebuild Combo Kit. Torque converters can be deducted from any Combo Kit at the price charged in that kit and you'll still receive the same discount rate on that kit. Any other parts for that type transmission can be added to a Combo Kit at the same discount rate for that kit, if not already listed as an add-on / upgrade for that kit. Build your own Combo Kit: Buy any 3 part numbers for the same type transmission at the same time that totals $450.00 or more and receive a 7% to 12% discount depending on what you buy. |
Bulk Performance Transmission Parts Here
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# 31006. Fits TH350 transmissions 1969 to 1979. Superior four stage TransAction kit. This TransAction kit includes the oil transfer plate to give the best 3rd gear available without having to remove the transmission. Stage 4 delivers full manual control or manual low at any speed which increases the overall performance level. This is the same kit we use in the 350 Raptor transmission. Cost $57.00
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#1. Turbo 350 high performance stage 2 Transgo shift kit. Transgo, Cost $69.00. |
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#1-350. TH350 elevated pressure valve. The OEM boost valve sleeve wears out from the reciprocation of the steel valve within the aluminum sleeve. Wear in the reverse boost sleeve results in low line pressure, soft 1-2 and 2-3 shifts and/or reverse engagement or shudder. Sonnax now offers a high performance boost valve and sleeve replacement. This new high performance boost valve and sleeve incorporates a larger boost ratio which increases line pressure and provides firmer shifts. It is also recommended for street/strip performance vehicles. Cost $49.00 |
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# 20812. Fits TH400 transmissions 1965 up. This Fairbanks TransAction kit will work on all 6 and 7 check ball cases. Stage 4 delivers full manual control or manual low at any speed which increases the overall performance level. This is the same kit we use in the 400 Terminator transmission. Cost $62.00
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#2. Turbo 400 high performance stage 2 Transgo shift kit. Transgo, Cost $78.00
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#2-400. Fits TH400 transmission. Boost valve wear results in oil leaks and poor line rise. This “Factory style” reverse boost valve and sleeve is manufactured from hardened steel to prevent wear. Vehicles with a TH400 transmission frequently have poor line rise, soft 2-3 shifts, and/or reverse engagement difficulties. These problems can be caused by the reciprocating reverse boost valve wearing the inside diameter of the boost sleeve. When this occurs, oil that enters the modulated throttle valve orifice leaks past the boost valve and exhausts through the reverse orifice or to the sump, resulting in poor line rise. Also, reverse oil can exhaust both to the sump and back through the modulated TV orifice. The outside diameter of the boost sleeve also allows some leakage through the pump body, which can increase boost oil loss. Cost $29.00 |
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#30CB. Torlon Check Ball, .250", 10 per bag. The new check balls (.250") are made out of tough wear- resistant imidized plastic. The imidized plastic balls seal better than steel balls because they conform to the separator plate ball seats. Steel check balls are hard and heavy, wearing separator plate ball seats from the repeated high impact of the ball on the seat. Elastomer or rubber check balls seal well. However, the elastomer material wears, reducing the size of the ball. Fits 700R4, 4L60E, 200-4R, TH400 and 4L80E transmissions. Sold 10 per bag. Cost $7.00 |
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#5VT. Vent tube for TH400 / TH350 / 700R4 / 200-4R transmissions. Cost $8.00 |
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#48.
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#48-2. Bezel for the above temperature gauge. Cost $6.00 |
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#3. TH400 / TH350 dip stick and tube with locking top. This late model dip-stick has a locking top to prevent blow-out and make a positive seal. Cost $27.00 |
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#3LR. New Borg Warner TH400 / 4L80E Carbon Fiber Low / Reverse Band. Cost $30.00 |
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#3B. TH400 larger manual 2nd band. This band is 1 and 1/4 inches wide a full .255" of an inch wider than a stock TH400 band. Wide Kevlar band, servo and apply pin. (You must change all three pieces at once.) Cost $52.00 |
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#3A. TH400 Cast Aluminum Accumulator Piston. This is a direct replacement for the plastic accumulator piston that always breaks. Cost $9.00 |
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#4. 350 / 400 Vacuum Modulator. Adjustable, allowing you to tailor your light throttle shift points with-in a range of 2-4 mph. Supplied adjusted for normal shift points. If your engine doesn't make adequate vacuum you will not be able to make the stock modulator work properly, usually resulting in late, hard shifts. Cost $15.00 |
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#4X. 350 / 400 Cable Operated Modulator, no vacuum needed. This works well for superchargers and on diesel motors without a vacuum regulator. This modulator uses a 700R4 throttle valve cable. Cost $128.00 |
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#5. Fits 350 Transmissions, Blue Plate Special friction clutch kit, 9 Forward / Direct clutches, 3 Intermediate clutches and 5 Low / Reverse* clutches (*Hi-Static tan clutches on Low / Reverse only). Cost $176.00 #5X. Fits 400 Transmissions, Blue Plate Special friction clutch kit, 10 Forward / Direct clutches, 3 Intermediate clutches. The Blue Plate Special provides optimum shift performance with a positive engagement under high power conditions where all of the energy absorption is condensed into a very short length of time. The color is not a dye but is a result of high-strength resins used to bind the fiber friction elements together and then covered with a preliminary coat of oil. Cost $169.00 #5XK. TH400 Kolene steel module for the above Blue Plate Special clutches. Cost $83.00 |
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#5-1B. Alto brown PowerPack for the TH400 intermediate clutch. This kit comes with 4 brown clutches and all steels. This is a 33% increase in apply area. Cost $39.00 #5-1. Alto RedEagle PowerPack for the TH400 intermediate clutch. This kit comes with 4 RedEagle clutches and all Kolene steels. This is a 33% increase in apply area. Cost $68.00 #5-2. Alto RedEagle PowerPack for the TH400 forward clutch. This kit comes with 6 RedEagle clutches and all Kolene steels. This is a 20% increase in apply area. Cost $94.00 #5-3. Alto RedEagle PowerPack for the TH400 direct clutch. This kit comes with 7 RedEagle clutches, backing plate and all Kolene steels. This is a 40% increase in apply area. Cost $136.00 #5-4. Get all three of the TH400 Alto RedEagle PowerPacks for $288.00.
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Intermediate RedEagle PowerPack |
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Forward RedEagle PowerPack |
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Direct RedEagle PowerPack |
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TH400 Performance Alto Red Eagle Master Rebuild Kit |
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#5-7. Alto Red Eagle Master Rebuild Kit for TH400 transmissions. Add filter, band and bushings if needed. Cost $190.00
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Includes the following:
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#5-9. TH400 Alto RedEagle front band. Cost $21.00 |
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#5-10. TH400 Carbon Fiber front band. Cost $22.00 |
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#K34900D. TH400 TransTec Overhaul Kit. Comes complete with all gaskets, metal clad seals, O-rings, lip seals, pump bolt washers, dip stick boot and SPX steel rings. Fits 1965 up. Cost $27.00 |
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#G10. TH400 torrington thrust bearing kit (partial 4L80E). All bearings have a reasonable service life of 100,000 to 200,000 miles. Always replace high mileage bearings. Cost $19.00 |
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#5TW. TH400 thrust washer kit with 8 washers total, with 1 selective washer. Cost $15.00 |
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#5B. TH400 bushing kit with 11 bushings total, with 1 yoke bushing for large yoke. Fits 1966 on. Cost $26.00 |
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#5TW3. TH350 thrust washer kit with 7 washers and 2 shims. Cost $17.00 |
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#5B3. TH350 bushing kit. Cost $10.00 |
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#5S. TH350 Intermediate Servo Accumulator Spring. This spring is very bad about breaking. Cost $3.00 |
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Includes the following:
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#5-8. Alto Red Eagle Master Rebuild Kit for TH350 / 350C transmissions. Add filter, band and bushings if needed. Cost $192.00 |
| #5-11. 350 / 350C Alto RedEagle band. Cost $17.00 |
| #5-12. 350 / 350C Carbon Fiber band. Cost $21.00 |
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#G9. TH350 torrington thrust bearing kit. All bearings have a reasonable service life of 100,000 to 200,000 miles. Always replace high mileage bearings. Cost $40.00 |
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#350T. TH350 Teflon Sealing Ring Kit. Cost $17.00 |
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#400T. TH400 Teflon Sealing Ring Kit. Cost $13.00 |
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#40. 350 / 400, 2WD universal transmission mount. Effectively controls transmission torque better than stock units, especially in high-performance applications. Soft enough to absorb vibrations for street use yet rugged enough for racing. Commonly used in stock car and drag racing. Helps control torque on heavy horsepower cars. Maintains proper drive shaft angle. Made of HYPER-FLEX performance polyurethane. Cost $29.00 |
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#40X. Universal transmission mount. Cost $6.00 |
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#40D. Extra long GM dowel pins. These dowel pins go all the way through the bell housing, adding extra holding power to help prevent bell housing breakage on high torque motors. Cost $13.00 |
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#350. SFI approved, extra thick, heavy duty flywheels. These flywheels have a double welded ring gear. - - - - - Chevy 350 motor 1968-1985, 14 1/8 inch diameter, 168 tooth, dual bolt pattern and no weight. - - - - - Chevy 350 motor 1986-1998, 14 1/8 inch diameter, 168 tooth, dual bolt pattern with weight. - - - - - Chevy 400 motor, 14 1/8 inch diameter, 168 tooth, dual bolt pattern with weight. - - - - - Chevy 454 motor, 14 1/8 inch diameter, 168 tooth, dual bolt pattern with weight, 1973-1990. - - - - - Chevy 454 motor, 14 1/8 inch diameter, 168 tooth, 6 outer converter bolts with weight, 1991-1997. Cost most $62.00 each.
| 350
No Weight
(out of stock) |
Cost
$99.00
350 With Weight |
Cost
$99.00
400 Cubic Inch |
Cost
$99.00
454 1973 - 1990 |
454
1991 - 1997
(out of stock) |
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#35LS1. This LS1 flywheel fits 1998 and newer F-bodies with LS1 engine as well as 1999 and newer GM trucks with 4.8L, 5.3L and 6.0L LS1 type engines. Cost $220.00
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#35S. Stock flywheels. Chevy 350 motor, 14 1/8 inch diameter, 168 tooth, dual bolt pattern and no weight. Cost $35.00. - - - - - Chevy 350 motor, 14 1/8 inch diameter, 168 tooth, dual bolt pattern with weight. Cost $39.00. - - - - - Chevy motor, 12 7/8 inch diameter, 153 tooth and no weight. Cost $35.00. - - - - - Chevy motor, 12 7/8 inch diameter, 153 tooth with weight. Cost $39.00. - - - - - Chevy 400 motor, 14 1/8 inch diameter, 168 tooth, dual bolt pattern with weight. Cost $39.00. - - - - - Chevy 454 motor, 14 1/8 inch diameter, 168 tooth, dual bolt pattern with weight. Cost $39.00. |
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#39. 350 / 400 transmission rebuild manuals. Cost $28.00 |
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#39V.
Transmission Rebuild Videos. 90 Minutes.
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#350DVD. This is the all new TH350 DVD. Discover how easy it is to get professional results and save money when you rebuild your own automatic transmission. Cost $34.00 |
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#400DVD. This is the all new TH400 DVD. Discover how easy it is to get professional results and save money when you rebuild your own automatic transmission. Cost $34.00 |
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#39XX. 700R4 / 4L60 / 4L60E / 350 Low-Reverse Clutch Spring Compressor. This is a very hard job without this tool. Cost $50.00 |
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#39XXX. GM Pump Puller. Cost $90.00. |
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#91. Table Mounted Spring Compressor. Cost $128.00 |
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#91CB.
Case Bushing Driver for 250, 250C, 350, 350C, |
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#91X. This 39 piece Bushing Driver Set covers all Domestic and Import Automatic Transmission Bushings and Seals. All drivers have been manufactured from 4140 Heat Treated material for extra durability. The kit contains 34 Bushing Drivers, 4 Drivers, all hooks and wall mounting peg board. Cost $399.00 |
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#TC-1001. GM Shift Lever Seal Removal Tool. Fits 200, 200-4R, TH350, TH400, 700R4, 4L60E and 4L80E. Maybe others. Cost $48.00 |
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#91P. Universal pump alignment tool. Works with all pumps. This tool comes with a chart, placing the pin in the correct numbered hole for that type transmission. This tool works in reverse, squeeze the clamp and place over pump halves then release for an automatic clamp. Cost $89.00 |