DOUG S HEADERS D3358 User manual

Brand: DOUG S HEADERS

Model: D3358

Type: User manual

Installation Instructions & Warranty Information

D3358 ~ 1970-81 Camaro, LS Engine Swap Mid Length Headers

REV. 1 11-30-21 DSL

Notes:

1. TheseheadersaredesignedspecicallytoworkwithDoug’sEngineSwapmotormount

 brackets#SK103.Wecannotguarantytwithanyotherbrand.

2. Willnotworkwithfactorycolumnshifters.Ifusingacolumnshiftautomaticyouwill

 needtofabricatelinkageoruseacableconversionkit.Ifusingamanualtranswe

 recommendaoorshifterandhydraulicclutchconversion.

3. Doug’sD3358aredesignedtobeusedwithmostGMautomatictransmissions 

aswellasT56andT56Magnumstickshift.SeeDoug’stransmissioncrossmember

 #SKC1021formoreinformation.

4. Doug’soersabolton3”Exhaustsystemforthisheaderapplication,part#DES104

 andmidpipesDMP104,DMP105toconnecttheheaderstotheexhaustsystem.

5. AngleBootSparkPlugwiresarerequiredwiththeseheadersWerecommendPerTronix

 CeramicBootwires#808224HTor828224HT.

DISASSEMBLY

1. WerecommendthattheDoug’smotormountsandtranscrossmemberinstallationare

 nishedbeforeattemptingtoinstalltheheader.Disconnectthenegativebatterycable

 fromthebattery.

2. Ifacarliftisnotavailable,raisethevehicle2feetorhigherandsupportitwith 

 adequatesafetystands.Makesurethevehicleisonaatsolidsurfaceandisstable.

3. Removethesparkplugwiresandplugs,thentheOildipstickandtube.

4. Ifthemotorhasexistingmanifolds,removethem,andcleanthematingsurfaceonthe

 cylinderheads.

INSTALLATION

1. Applyadabofanti-seizetothesuppliedheaderbolts.

2. Startingwithpassengerside,sliptheheaderinplaceworkingfromaboveandholdin

 placewith1headerbolt.

3. Fromabovesliptheheadergasketinplaceandthenstarttheremainderiftheheader

 boltsandlockwashers.

4. Tightenallheaderboltsevenlyworkingfromthecenterout.

5. SliptheDriver’ssideheaderintoplacefromabove.Aswiththepassengerside,install

 thegasketandalltheheaderbolts,tighteningfromthecenterout.

6. Reinstallthedipsticktube,sparkplugsandwires.

7. IfusingtheDoug’sMidPipes#DMP104,DMP105,slipthemontothecollectors,butdo

 nottightentheclampsuntilyoudotheexhaustinstallation.Installyour02-sensors,use

 adabofAntiSeizebeingcarefultonotgetanyonthe02-sensorprobe.

9. InstalltheDoug’sExhaustsystemtocompletetheinstallation.

PARTS LIST:

1 Left side header 1 Right side header

2 Header gasket 12 Header bolts M8-1.25 x 25MM (1” long)

12 Lock washer, 3/8”

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DOUG S HEADERS D3358 User manual

Brand: DOUG S HEADERS

Model: D3358

Type: User manual

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