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  3. Exhaust H8077
Exhaust H8077

Patriot Exhaust H8077 User manual

  • Hello! I have analyzed the provided document which contains installation instructions for the Patriot H8077 mid length headers designed for 1970-81 Camaro and 1975-79 Nova models with an LS engine swap. This document covers the disassembly of the old exhaust system and the installation of the new headers along with required components. I'm ready to answer any questions you might have about this product and its installation.
  • What motor mount adapters are required for installation?
    What should I do before installing the new headers?
    Is welding necessary for installation?
Installation Instructions & Warranty Information
H8077 ~ 1970-81 Camaro, 1975-79 Nova
LS Engine Swap
Mid Length Headers
REV. 5 5-16-22 DSL
NOTE: These headers are designed to be used with Doug’s Headers SK100 motor mount adapters
DISASSEMBLY
1. Remove bolts from headpipe to exhaust manifolds.
2. Note the spark plug wire locations and remove them from the spark plugs.
3. Remove spark plug wire looms, plugs and any brackets attached to the manifolds.
4. Disconnect the 02 sensor wiring.
5. Remove the 02 sensors.
6. Remove the oil dipstick and tube.
7. Remove both exhaust manifolds.
8. Remove the starter.
9. Clean the sealing surface on the cylinder head of any old gasket debris or carbon build up
10. Removetheoillter.
INSTALLATION
RIGHT SIDE:
1. Starting from below, work the header and gasket up through the chassis into position.
2. Apply anti-seize to all header bolts being used. Start all header bolts.
3. Tightenallheaderboltsevenly(mostrestrictedrst.
4. Reinstall the right side spark plugs, wire looms, starter and dipstick tube and dipstick.
5. Install the 3 bolt reducer with the provided nuts and bolts.
6. Cut the old exhaust pipe and weld as necessary to the new reducer.
7. Reinstall the O2 sensor.
LEFT SIDE:
1. Starting from below, work the header and gasket up through the chassis into position.
2. Apply anti-seize to all header bolts being used. Start all header bolts.
3. Tightenallheaderboltsevenly(mostrestrictedrst).
4. Reinstalltheoillter.
5. Reinstall the left side spark plugs, wire looms and any brackets.
6. Install the 3 bolt reducer with the provided nuts and bolts.
7. Cut the old exhaust pipe and weld as necessary to the new reducer.
8. Reinstall the O2 sensor.
9. Connect the negative battery cable.
Parts List:
1 Left side header 1 Right side header
2 Header gasket 12 Bolt, header, M8-1.25 x 26
6 3/8-16 X 1” Bolts 6 3/8” Nuts
6 3/8” Lock Washer 2 3” Collector Gaskets
2 Reducers
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