SMALL-BLOCK CHEVY: #EDE5088


E-street cylinder heads for 1986 & earlier
small-block Chevy with straight plugs
with 70cc combustion chambers (sold in pairs)...................................#EDE5073
with 64cc combustion chambers (sold in pairs)...................................#EDE5089


Technical Notes: Use with hydraulic camshafts .550" max lift. Recommended spark plugs
are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat.

Requires hardened pushrods. Not legal for sale or use on pollution controlled motor vehicles.



SMALL-BLOCK CHEVY: #EDE5073 | #EDE5089
Chamber volume....................................70cc | 64cc

Deck thickness ................................................9/16"

Valve spring diameter (1.750" installed height) ....1.25"

Maximum valve lift ........................................0.550"

Rocker stud diameter (with guide plate)................3/8"

Pushrod diameter............................................5/16"


Intake

Port volume ...........................................................185cc

Valve size................................................................2.02"


E-Street Bare Heads are also available:
with 70cc combustion chambers (#EDE5072) | with 64cc combustion chambers (#EDE5088)


Note: Bare heads have valve guides and valve seats installed; final sizing of the guides and finish valve job are required. Sold and packaged in pairs.