• 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

port (+.750” taller)

• Intake port volume 243cc

• Exhaust port volume 103cc (426-1)

• 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