Sale

Chassis Components Crossmembers

Hooker

Transmission Crossmember 1973-1987 GM C-10, 15 2WD, LS, Lt Swap 4L80 Transmission Crossmember Also Fits 1979-1987 C20 2WD & 1973-1982 Blazer, Jimmy 2WD Hooker BlackHeart

$345.95 $280.86 Save $65.09

SKU: H00I BHS549

In Stock
In Stock
Ships by Sep 13
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Hooker BlackHeart BHS549 Transmission Crossmember is a redesigned, more affordable crossmember for LS/Gen-V LT swap applications, specifically designed to fit 4L80E and 4L85E transmissions in 1973-1987 GM C-10/15 2WD, 1979-1987 C20 2WD, and 1973-1982 Blazer/Jimmy 2WD vehicles.
Show original supplier description

Part #: BHS549

These new crossmembers have been redesigned and are less expensive than the previous crossmember & work with engine mounting brackets BHS540 for both the GM LS & Gen-V LT engines. Choose the crossmember based on the transmissions that you want to run in your 1973-1987 C10:Crossmember BHS548 fits 4L60E, 4L65E, 4L70E, 4L75E, and 6L80 TransmissionsCrossmember BHS549 fits 4L80E, and 4L85E TransmissionsCrossmember BHS550 fits T56, and T56 Magnum TransmissionsThese crossmembers, when used with BHS540, provide the ideal u-joint angles and the best clearance for 3.00 Inch dual exhaust.Revised Design with Lower PricingFits 1973-1987 C10/15 2WD, 1979-1987 C20 2WD & 1973-1982 Blazer/Jimmy 2WDLS/Gen-V LT Swap Transmission CrossmembersDesigned for Use with All 1973-1987 C10 LS/Gen-V LT Swap ComponentsUse with BHS540 Engine Mounting Brackets (Also Works with 12621HKR)Designed Using CAD Modeling/FEA Analysis for Optimal Strength, Weight, Safety & AppearanceWelded Steel Construction w/ Black Powder Coated FinishProvides an Optimum Engine/Transmission Inclination Angle That is Critical to Obtain Suitable U-Joint Working Angles, when installed with BHS540 Engine Mounting BracketsDesigned in Conjunction with Other Hooker Blackheart C10 Engine Swap Parts to Provide Bolt-in Installation of Hooker LS and LT Swap Manifolds and Exhaust Systems for this ApplicationProvides the Highest Clearance Available for up to 3.00 Exhaust SystemDetails:Application: 1973-1987 Chevrolet / GMC C10 Series TruckColor: BlackEmission Code: 6Engine: GM Gen III/IV (LS)Finish: Black PowdercoatedMaterial: SteelMotor Type: GM LS, GM LTProduct Type: Transmission CrossmemberTransmission: 4L80E, 4L85EType of Component: CrossmemberWarning: California Proposition 65

Features:

  • Revised Design with Lower Pricing
  • Revised Design With Lower Pricing
  • Fits 1973-1987 C10/15 2WD, 1979-1987 C20 2WD & 1973-1982 Blazer/Jimmy 2WD
  • Designed For Use W/1973-1987 C10
  • LS/Gen-V LT Swap Transmission Crossmembers
  • Use w/BHS540 Engine Mount
  • Designed for Use with All 1973-1987 C10 LS/Gen-V LT Swap Components
  • Designed Using CAD Modeling
  • Use with BHS540 Engine Mounting Brackets (Also Works with 12621HKR)
  • Welded Steel Construction w/Black Powder Coated Finish
  • Designed Using CAD Modeling/FEA Analysis for Optimal Strength, Weight, Safety & Appearance
  • Welded Steel Construction w/ Black Powder Coated Finish
  • Provides an Optimum Engine/Transmission Inclination Angle That is Critical to Obtain Suitable U-Joint Working Angles, when installed with BHS540 Engine Mounting Brackets
  • Designed in Conjunction with Other Hooker Blackheart C10 Engine Swap Parts to Provide Bolt-in Installation of Hooker LS and LT Swap Manifolds and Exhaust Systems for this Application
  • Provides the Highest Clearance Available for up to 3.00" Exhaust System

Blackheart Transmission Crossmember | LS/Gen-V LT Swap | Fits 1973-1987 C10/15 2WD/1979-1987 C20 2WD/1973-1982 Blazer/Jimmy 2WD 4L80 Transmission

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandHooker
Part NumberH00I BHS549

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy