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1973-1987 GM K Series Cummins Conversion Kit | GF-GMK3-KIT

Save $170.50
Original Price $1,705.00
Current Price $1,534.50
SKU GF-GMK3-KIT

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Our 73-87 GM Truck K Series Cummins Kit is comprised of many of the items needed for your Cummins diesel engine conversion. It includes a transmission adapter and flexplate to mate a TH400, 700R4, or 4L80E transmission to a 6BT Cummins engine.  Our Cummins bolt-in 2" drop engine crossmember (or K Member) allows for proper engine placement and provides chassis strength to accommodate the added torque of the Cummins!
  • Fits Models: Chevy K Series - K10, K20, K30 Chevy/GMC Pickup
  • Fits Years: 73-87
  • Fits Transmissions: TH400, 700R4, 4L80E
  • This kit is comprised of some of our most popular items for your 73-87 Chevy K Series Cummins conversion.
  • The Kit includes:
    • GF-C-S - Adapter and Flexplate-  The 5.9 Cummins to Chevy Adapter Plate and Flexplate Kit accommodates 2002 and earlier Cummins 6BT engines bolting to a Chevy automatic transmission such as a TH400, 700R4, 4L80E, or similar transmission.
    • GF-GMDC - Cummins 6BT to Chevy Drop Crossmember-  This 2" drop crossmember allows proper engine placement and often eliminates the need for a lift kit when installing a Cummins 6BT into a 73-87 Chevy 4WD truck.
    • GF-C-MM - Motor Mount- When installing a Cummins 6BT into your 1973-1987 Chevy pickup, this conversion motor mount allows for proper placement of the engine directly to the OEM frame mount isolators. When used in conjunction with a G Force GF-GMDC Drop Crossmember on 4WD models, you can retain OEM drivetrain height. Without our GF-GMDC Drop Crossmember a vehicle body lift is required.
    • GF-Boltkit-Adapter - Adapter Bolt Kit,  Premium grade bellhousing adapter bolt kits to make mounting the adapter plate to engine as simple as possible. Set of 9 bolts.
    • GF-Bolt Kit Flexplate - Flexplate Bolt Kit, -Flexplate bolts for mounting your Cummins 6BT to a GM Bellhousing. 12mm x 1.25. 25mm underhead length. Set of 8 bolts
    • GF-Boltkit-Starter - Starter Bolt Kit - Steel, zinc plated bolts constructed to strict engineering quality standards and serve as direct replacement bolts for replacing the Cummins 6BT starter. Set of 4 bolts with 3 washers
Note: This kit ships in two boxes.

Customer Reviews

Based on 1 review
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Cleve Lamey

looks good

PRODUCT DESCRIPTION

Performance Engineered from Start to Finish

Performance
Engineered

G Force flywheels are CNC machined from billet steel or aluminum and won't crack from high heat cycles. Get more performance than from traditional cast iron flywheels.

Easy Installation.
It’s Foolproof!

We engineer bold solutions that make installation easier without sacrificing quality. Get more support from G Force. 

SHOPTALK

We packaged all the items you need for our Cummins to GM K Series swap in a convenient kit.

Best of all, when you purchase these parts as a kit, we've discounted the price.

You can find out more about a Cummins swap in these blog articles.
Which 6BT Cummins is Best for Your Swap
Diesel Cummins Conversion
The Popular Ford Cummins Swap
Cummins Allison | A Popular Conversion
What is a Motor Mount

Years

1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987

Models and Engine

Chevrolet K Series - K10, K20, K30

Specifications

This product ships in 2 boxes.

Shipping Dimensions: 32 lbs  21 X 18 X 5 In  and  20 lbs  28 X 11 X 7 In

Mounting Hardware: Included

Customer Reviews

Based on 1 review
100%
(1)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
C
Cleve Lamey

looks good

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