DOUG S HEADERS D350 Long Tube Headers Installation Guide

DOUG S HEADERS D350 Long Tube Headers

WARNING:
This product can expose you to chemicals including Lead, Nickel, Cadmium and Chromium which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES

This product is Legal for use on Pre-Pollution Controlled Vehicles. It is legal for use on all vehicles produced Before Emisslons Control Regulations were imposed. These are considered Uncontrolled Vehicles and are defined as follows;

• 1965 and Older US Manufactured Calitfornla Certifed Vehlcles
• 1967 and Older US Manufactured Federaly Certified Vehides
• 1967 and Older Forelan Manufactured Vehicles

PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This Product is LEGAL for Closed Course Competition use or Pre-Emissions Controlled Vehicles ONLY. It is Not Legal for use on any Emissions Controlled Vehicle for Street or Off Highway use.

PLEASE READ BEFORE PROCEEDING

PerTronix® thanks you for choosing a Doug’s Headers Product. To realize the potential of Doug’s Headers engineering and excellent fit, Please Read and Understand theseinstructions completely prior to starting the installation. Check that you received all the parts listed on the parts list, if you have any concerns, please contact PerTronix before continuing. Headers will have the part number stamped in the flange. Many factors affect he installation of exhaust headers, including worn or aftermarket motor mounts, previous accident damage, aftermarket cylinder heads that may have relocated port or spark plug locations, suspension and steering changes, sagging of original unibody structures due to age.

Coating Notes: Coatings can be marred during installation if you are not careful. If you are breaking in a new motor, the extreme heat can alter the appearance of the coating and this is not a warranty issue. We recommend breaking in new motors with stock manifolds or an old set of headers. We use sealing beads on all our headers. The raised bead creates a better seal virtually eliminating leaks if installed properly. It is important to install all header bolts lightly snugand then tighten to factory torque specs starting in the center and working outward. Before starting, allow the vehicle to cool, disconnect the battery, and spray a penetrating oil on all hardware and fittings that will need to be removed. Once you remove your manifold, clean the sealing surface on the head of any old gasket debris or carbon build up.

Work Smart – Work Safe! Most Header and Exhaust Installation are best performed on a lift. If a lift is not available, raise the vehicle and support on quality Jack Stands on level ground. Do not rely on a jack!

Header Installation

1. Disconnect the stock exhaust from the manifolds.

2. Remove the spark plug wires and spark plugs, then remove the stock manifolds.
   DRIVER SIDE:

3. Remove the oil filter, dip stick tube, and clutch linkage.

4. Remove the Alternator or Generator if it is mounted to the exhaust manifold.

5. Clean the cylinder head surface of any leftover gasket or carbon deposits.

6. Working from below, slip the header up into position. Place the gasket between the header and cylinder head and using the supplied bolts and washers, evenly tighten the header bolts starting in the center and working your way out. Reinstall the Oil Filter, Dip stick tube, and clutch linkage.

7. If the generator or alternator were mounted to the exhaust manifold you will need a bracket part #H7606 and H7607

8. If an A/C compressor was mounted to the left side header you will need bracket #H7608 (63-67 cars) or modify bracket per Illustration A (68-74 cars)
   PASSENGER SIDE:

9. Working from below, slip the header up into position. Place the gasket between the header and cylinder head and using the supplied bolts and washers, evenly tighten the header bolts starting in the center and working your way out.

10. Reinstall the starter.

11. If the alternator or generator was mounted to the right side manifold you will need a relocation bracket.

12. If an A/C compressor was mounted to the right side header you will need bracket #H7608.

13. Reinstall the spark plugs and spark plug wires. Re-Connect the battery cable.

IMPORTANT CHECK LIST

Be sure that all brake lines, transmission lines, and fuel lines are clear of headers and/or connector pipes. All spark plug wires, battery cables, or other electrical components should be clear ofheaders and/or connector pipes. If dipstick tube was removed, make sure it is installed properly and that the dipstick has been replaced. Double-check the tightness of all bolts including brackets and accessories

Parts List

• 1 Left side header
• 1 Right side header
• 2 Header gaskets
• 12 3/8-16 X 1” header bolts
• 18 3/8 Lock-washer
• 6 3/8-16 x 1 1/4” Collector Hex head bolts
• 6 3/8” Lock washers
• 2 Collector Gaskets
• 2 Reducers
• 1 Spacer tube, req. for Some power steering pump brackets

DOUG’S HEADERS LIMITED WARRANTY

All Doug’s Headers and Exhaust products are guaranteed, to the original purchaser, to be free of defects in material and workmanship for one year from date of purchase. This warranty covers the replacement or repair of the product and does not cover the cost of removal and installation, customer applied coatings, or Any discoloration or corrosion of finished surfaces. Damage or product failure resulting from collision, improper installation, off road use, road hazards, the use of exhaust insulating wrap, or rust occurring after installation is not covered by the warranty. This warranty extends only to the original purchaser. Should a part be deemed defective, it should be returned to the original selling retailer and must be accompanied by the sales receipt. If there is no retailer in your area, contact PerTronix direct for a return authorization and return the part prepaid to the factory for inspection. PerTronix reserves the right to replace or repair the alleged defective part and return the part freight collect.

A Per’Tronix Performance Brand ~ www.pertronixbrands.com 909 599-5955 Installation Instructions & Warranty Information D334 and D350 1963-74 CORVETTE 265-400 SBC Long Tube Headers

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