’73-’87 Truck Big Block Archives - Lemons Headers https://lemonsheaders.com/product-category/73-87-truck-big-block/ Lemons Headers Thu, 21 Aug 2025 20:26:25 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.2 https://lemonsheaders.com/wp-content/uploads/2022/11/cropped-lemons-header-logo-32x32.png ’73-’87 Truck Big Block Archives - Lemons Headers https://lemonsheaders.com/product-category/73-87-truck-big-block/ 32 32 213019897 BBPU-4X4 – 4WD “K” 5/10/20/30 TRUCKS ‘73-’87 BIG BLOCK – BB header for 4 wheel drive, stock chassis https://lemonsheaders.com/product/bbpu-4x4-bb-header-for-stock-chassis/ Wed, 14 Dec 2022 01:18:50 +0000 https://lemonsheaders.com/product/bbpu-4x4-bb-header-for-2-wheel-drive-stock-chassis/ Header Specs:
This header can be made in any tube size UP TO a step header of 2 1/8” stepped to 2 ¼” with UP TO a 4” collector. It is hand made so we can make it for any deck height and for any cylinder head. All tubes are inside the frame. ½” below the bottom of our oil pan. Spark plug access is excellent. We have room for oil The bottom of our design header was pan sump kick outs, on the driver side we have 4 ½” of room at the bottom of the pan and on the passenger side we have 1 ¾” of room. If the oil pan kick out is under the oil filter the filter may be trapped.

What Fits:
This header will fit stock motor mounts and motor plates. The steering column has good room and there is room for a power brake booster, it also fits factory clutch linkage.
If you have a column shifter you will have to use Lokar or I Did It shifter linkage. They both offer replacement mechanical linkage and a cable shifter system.
This header requires a mini starter not over 8” long including the mounting block at the back of the starter. We recommend a Power Master #9540 starter or CVR 5323 starter. If your oil pan has sump kick outs under the oil filter the filter may be trapped.
We have room for oil pan kick outs. The bottom of our design header was ½” lower than the bottom of the oil pan. The available room for oil pan sump kick outs, measuring from the side of a stock oil pan on the driver side we have 4 ½” of room at the bottom of the pan and on the passenger side we have 1 ¾” of room. If the oil pan kick out is under the oil filter the filter may be trapped.
This header was not designed for a 1 ton chassis. It will touch the inside of the “C” shaped frame.
If you want to use them on a 1 ton truck you can slightly trim the frame (ask Dan for more info).
Installing Headers:
Note: It is important to read our Yellow “Header Installation Tips” page before installing the headers. It will make installing them easier and save you time!

Installing with individual tubes:
On the driver side install #1, then #3, then #7, then #5. Only snug the header bolts until the collector has been installed then tighten all bolts.
On the passenger side install #2, then #4, then #8, then #6.

Installing one piece headers:
If the header is built as all one piece then it should be installed as the engine is installed.

Thank you for selecting Lemons Headers!
If you have any questions give us a call at 805-239-8998.

The post BBPU-4X4 – 4WD “K” 5/10/20/30 TRUCKS ‘73-’87 BIG BLOCK – BB header for 4 wheel drive, stock chassis appeared first on Lemons Headers.

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The post BBPU-4X4 – 4WD “K” 5/10/20/30 TRUCKS ‘73-’87 BIG BLOCK – BB header for 4 wheel drive, stock chassis appeared first on Lemons Headers.

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#BBPU-2WD ‘73-’87 – 2WD “C” 10/20/30 BIG BLOCK TRUCK HEADER FOR 2 WHEEL DRIVE, STOCK CHASSIS https://lemonsheaders.com/product/bbpu-2wd-bb-header-for-stock-chassis/ Wed, 14 Dec 2022 01:18:50 +0000 https://lemonsheaders.com/product/bbpu-2wd-bb-header-for-4-wheel-drive-stock-chassis/ Header Spec’s:

This header is designed for two wheel drive pick up’s only. All tubes are inside the frame. It can be made for any deck height and any cylinder head, in any tube size UP
TO 2 ¼” primaries with up to a 4” collector.

What Fits

Spark plug room is good, but #5 is difficult to reach. A mini starter is required. Measuring from the side of a stock oil pan we have 3 ½” of room from the oil pan on the passenger side and 2 ¾” of room on the driver side for oil pan kick out sumps This header is designed for stock motor mounts or motor plates as long as the engine stays in the stock position. This header does not fit a 1 ton chassis. It will touch the inside of the “C” shaped frame.
If you want to use them on a 1 ton truck you can slightly trim the frame (ask Dan for more info).
This header needs a mini starter. It fits factory air conditioning and power brake booster.. It does not fit factory clutch linkage. It does not fit factory column shifter linkage, but Lokar Performance Products makes a replacement linkage that bypasses the original factory linkage under the floor. It goes directly from the lever on the column to the transmission lever. They also make a cable system for the column shifter.

Installing Headers: Pro-Tour style:

The engine will have to be raised on each side for installation.

Installing Headers: Race Style:

Race style is individual tubes and slip on collectors.
Install one tube at a time starting from front to back. Only snug header bolts, do not tighten them.
Then install slip on collectors and bolt in place.
Then go back and tighten all header bolts.

Be sure to read our Yellow (Header Installation Tips) page before installing the headers. It will make installing the headers easier and save you time.

Thank you for selecting Lemons Headers!
If you have questions give us a call at 805-239-8998.

The post #BBPU-2WD ‘73-’87 – 2WD “C” 10/20/30 BIG BLOCK TRUCK HEADER FOR 2 WHEEL DRIVE, STOCK CHASSIS appeared first on Lemons Headers.

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The post #BBPU-2WD ‘73-’87 – 2WD “C” 10/20/30 BIG BLOCK TRUCK HEADER FOR 2 WHEEL DRIVE, STOCK CHASSIS appeared first on Lemons Headers.

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