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Description
1973-1987 GM K Series Cummins Conversion Kit GF-GMK3-KITOur 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 Truck Model Years: 73 87. Fits
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 Truck Model Years: 73-87.
- Fits Engine Years: 89-02.
- Fits Transmissions: Chevrolet 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-BoltKitAdapter - 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-BoltKitFP?- 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-BoltKitStarter - 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.
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1975-1986 | Chevrolet | K10 Suburban | |
| 1975-1976 | GMC | K15 | |
| 1975-1986 | Chevrolet | K20 | |
| 1973-1974 | Chevrolet | K20 Pickup | |
| 1975-1986 | Chevrolet | K20 Suburban | |
| 1975-1978 | GMC | K25 | |
| 1973-1974 | GMC | K25/K2500 Pickup | |
| 1979-1984 | GMC | K2500 | |
| 1977-1986 | Chevrolet | K30 | |
| 1973-1974 | Chevrolet | K30 Pickup | |
| 1977-1978 | GMC | K35 | |
| 1979-1984 | GMC | K3500 | |
| 1987 | Chevrolet | V10 | |
| 1987-1988 | Chevrolet | V10 Suburban | |
| 1989-1991 | Chevrolet | V1500 Suburban | |
| 1987 | Chevrolet | V20 | |
| 1987-1988 | Chevrolet | V20 Suburban | |
| 1989-1991 | Chevrolet | V2500 Suburban | |
| 1987 | Chevrolet | V30 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 2227 reviews
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Product Reviews
★★★★★ 1
Poor quality
Poor design, pre drilled holes did not align. Had to throw it away.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 16, 2025
★★★★★ 4
Good
Pretty easy to setup. The directions were easy to follow I setup in less than an hour. It’s kind of flimsy when moving it around but holds up well for sleep. Not squeaky at all.
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Reviewed in the United States on August 29, 2025
★★★★★ 3
Wooden slats not sturdy enough.
The bed frame looks nice, but the holes were not all aligned well, and with a bit of wrangling we were able to get it assembled with two people in about 45 minutes. The box was small, and the side rails are actually two pieces. Be careful because I pinched my hand pretty good when trying to align them after everything had been screwed together. The slats that go under the mattress are very thin and I'm concerned that they will break eventually. I think the company could have used better wood for the slats and still charged the same price. It's so hard to read through a ton of reviews to decide which bed frame to buy. This one is OK, but I see myself having to purchase wood in the future to replace the slats. It's long enough for a grown young man of 6'1" to sleep on it, but if my kids were younger and prone to jumping on beds, I'm sure it would break.
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Reviewed in the United States on October 26, 2025
★★★★★ 1
Stains on the same frames don’t match
I’m quite frustrated with this product. I ordered two natural wood frames for my boys bedroom. The first frame arrived, and it was definitely natural wood. The second frame arrived and it had a yellow stain to it. So I returned it and the company sent me a new frame. Also yellow. So I returned that one and ordered yet another natural wood frame. You guessed it. It arrived with the yellow stain as well. I’m not sure what it’ll take to receive an actual natural wood frame but I sure am frustrated with all of these returns. Meanwhile, only one of my boys has a had a bed frame for the past 18 days. 😣🙄
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Reviewed in the United States on November 19, 2025
★★★★★ 5
Lightweight and sturdy: A Great Foldable Bed Frame
Size: Full, Style: 14 Inch ( Foldable)
I’m very happy with this bed frame.
Pros: Assembly is super easy (it took me about 5 min), and it’s lightweight. The frame is sturdy and silent; there are no squeaks when I move or sleep. No box spring is needed, which is a big plus.
Cons: The only issue I had was a bolt that didn’t tighten fully due to bad threading, but it didn't affect stability.
Overall, I highly recommend this bed frame for its practicality and quality.
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Reviewed in the United States on May 26, 2026
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