• Should be purchased in kit form (426-1K)
• 426-1K includes everything between block and carb
• Assembled heads come with hydraulic, solid,
or roller springs good up to .650” lift
• Recommended 10 degree locks for solid or roller cam
• Customer must supply cam specs
• 426-27 Indy roller rockers recommended
• Uses any aftermarket adjustable rocker from
stock type Hemi head
• Accepts any Hemi rocker shafts
• Valve angle is stock, stock valve location
• Stock Hemi exhaust bolt pattern and port location
• 426-1R same head as 426-1, but has raised exhaust
port (+.750” taller)
• Intake port volume 243cc
• Exhaust port volume 103cc (426-1)
• Exhaust port volume 117cc ( 426-1R)
• Features +.350” longer intake valve and raised
intake port
• Intake valve diameter 2.250” - 5.900” overall length
• Exhaust valve diameter 1.940” - 5.080” overall length
• 170cc combustion chamber volume
• 2” spring height, spring seats 1.550”, can cut 1.625”
• Intake gasket Indy #258
• Exhaust header gasket Indy #266
• Valve cover gasket Indy #262
• Head studs: ARP #426-23 for Indy Maxx block
• Head studs: ARP #426-22 for steel Mega block
• Valve guides 11/32 solid bronze
• 3/4 reach gasket seat spark plugs
• Champion C57CX (cold) to C63CX (hot)
• Fits standard Hemi block
• Has both 16 and 10 intake bolt pattern
• Accepts stock and Indy intake manifolds |
