{"product_id":"proflow-cylinder-heads-airmax-170-aluminium-bare-72cc-chamber-170cc-intake-runner-big-block-ford-fe-390-428-pair","title":"Proflow Cylinder Heads, AirMax 170, Aluminium, Bare, 72cc Chamber, 170cc Intake Runner, Big Block Ford FE ,390-428, Pair","description":"Proflow does not sacrifice quality for a low price--you get both with our aluminium cylinder heads. The lightweight heads are cast from A-356 aluminium alloy with a large choice of engine, for SB \u0026amp; BB Chevrolet, LS Chev Holden Ford SB 289-351W, 302, 351 Cleveland 2V \u0026amp; 3V \u0026amp; BB FE, and Chrysler SB \u0026amp; BB. They have phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas. They're also end-milled and drilled for accessories. The fully assembled heads have stainless steel valves, high performance valve springs, 7 degree valve locks, rocker arm studs, and guideplates. Perfect for your Mild or High performance Hot Rod.      SPECIFICATIONS    Combustion Chamber   72 cc   Intake Port Volume   170 cc   Intake Port Dimensions   2.065” (H) x 1.360” (W)   Exhaust Port Volume   125 cc   Exhaust Port Dimensions   1.85” (H) x 1.27” (W)   Spark Plug Location   Angled   Intake Valve Diameter   2.09”   Exhaust Valve Diameter   1.65”   Valve Stem Diameter   3\/8”   Valve Spring Pocket ID   1.725”   Valve Guide OD   0.562”   Rocker Stud Thread Size   Shaft Type   Valve Angle   13°   Deck Thickness   0.625”      ","brand":"Proflow","offers":[{"title":"Default Title","offer_id":42176455508013,"sku":"PFEAHF17072","price":1783.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0610\/2987\/5757\/products\/PFEAHF17072.jpg?v=1709682734","url":"https:\/\/propartswarehouse.com.au\/products\/proflow-cylinder-heads-airmax-170-aluminium-bare-72cc-chamber-170cc-intake-runner-big-block-ford-fe-390-428-pair","provider":"Pro Parts Warehouse","version":"1.0","type":"link"}