B��0�{3��0�Ho9�? �t�6ҟ�?`�����(��)���S ��%CC�W~~(q_��` �.X��a�>|�s�gQa�>Y�%LK��q���=��ua'�_RȔ�Zv����洐�����Icg<2f��`��s�ot�d�0&�4�x���*ptP���3���I�n` There is a lot of weight to be saved just by using those aluminum parts. 1CFXldx5I8+mxWK18sW8ciW0kfJ7Ty9WRvrM0kXMBSnIL9W5BQEoJCBz4HCqX+SBoAkhgsvNOoJM The next weight-saving measure would be a set of aluminum heads. eY9YtbvSntkRLC3RBwuBHF6jhxbwuw9RZKValG+z4BWY4q7FXlP5kXWup51tLSw154WuobVINKiT The engine will have good throttle response and produce the kind of torque and horsepower numbers you want. So 77 lbs worth of savings all up, don't they say 100 lbs is worth 1/10th. He weighed an entire, assembled aluminum bbc with supercharger and it was only 100lbs more than the cast iron stuff with no rotating assembly. 2, 1400 Kingsdale Ave., Redondo Beach CA 90278, Camshaft Tech with COMP Cams' Billy Godbold, DENSO Products and Services Americas Celebrates 50 Years in America, Standard Motor Products Names Dave Illes Director of Sales, Heavy-Duty Aftermarket, Athena Racing Fundraiser to Feature Chip Foose, American Powertrain Pro-Fit TKK 5-Speed Systems, Engine Sealing Using Hoops and Receiver Grooves, Edelbrock to Leave California HQ for Mississippi, Don't Gamble When Choosing Cylinder Heads, Dr. Raj Shah, Dr. Vikram Mittal and Nathan Aragon. – 351C Australian block (used by NASCAR). JIZefb7RKpnc+QvI11Bodo/nILY6HFBaTWg0uVYrlU1CWSu7beoSfWILK1Fmb4eGK2mumfkjp/ma Heads are available with various combustion chamber volumes. PDF/X-1:2001 5eVppSqXERPID95XiCKhVE6drP5+3FxYJqGhWlnFPeD9ItE1uwt7NCu8chu5GZpKGo9I7HahpRVb �wx��t\���wͱ� ��NOQ@х���(��Ė8��l>�rhz_��b⥻�� �K#L�R&���E���ޝS���$^�)���F7C���p�zA�c��,X��I ��b�w������aG)����w�]$�k�}4��Ͽ����������A�>��`��a��[���ݺ��Z^A���`���/��v����dz��A��#R�Io&���\680�� ��5� 9p���a��\Q�d����IF�/̎�(r��1Ɠ��c��g�J�@��Y�쫭Ayo�=���TF��N!�97E�X������0hʈ�A���s&��V� ?-�!��ڱ[��-�g�.ZTTL�b��!��p��,� V‘��E�It[�!����W������o{�fZE,��R�|)t�A;/Z3>dfv;��V�_VOۢ�Es\i�sŐBV\��U��=Кlj�d��*�8>i�/�:�Ū���rMU.y�S��||�7Ǒ���M�y�p6��5g��YA CfExYgn4ytOfx1wK78wNN1PUfLr2unWwupWkX1IvTtJXMZBDemt6Gt670PMfZ5U3pirAm8peceVt ya2smjin9SVikI5erJGzR8t9qbVAOKsR0/yF+Z1pqlhJHr3GztRKs/q6hfXZlMlqkXqtFOh5ETB3 the angles on the valve seat and valve face. 01K0SyZLWPUDBIY5eEL3i2MCpfVVxFMKNKvHYKp/ZxVm/wCUtiZpNa8wpq17qdnqFx6Nil+kgaGG ugWUmorZfV7q4gttGeCaRJpGj4fWV9T01CW1FYABFfbmEOFXuIrQV696dK4Fedee9H833Gtz3Flp Other manufacturers agreed. nfzjoGg6V53ttLS/aK9hWeeBF0+CVI4pWM3w1vbeQR2qsJI+KbOGKlmqoKp7+VKaCn5mX0dpeXkt OLMAhArVVLT5P/M2x0Jor3zhb2oa4sDJPNLcu0pQxRmNLp3iNv6snwcVRvVNK0LuCqkV5Yeck0my 6noturU+E/SFeiYq7FXlH5ga/wCXNM8+2UV7oVzeXsv1S4i1Ga7u7a1Mtq8jwxQJRoZZY6khAKM7 0bVbu9v/ADHdavBcRmOGyn5+nETcSzc15ySkkJKI/kvhQKFZTirTEBSSaADc4q+ZLXU/K8GoadJF 5VeQ5tTXVH01hqCsHF0lzdRvzWUzhyUlWr+qeXI71xVHaP5F8q6NqjapptiLe/eJ7dpvUlf91JL6 2010-08-20T08:00:26-07:00 OX9WISUc0q0yLxFUZSr6VSnBaCgoKA9RgV5F+bGsfl3p/mKS680aJd3sltZJE95bT3MSi3uFuVKK k3EksX1mymR5eZHH7JWLnvUHiCqM/Lax1KHz5PLceVhpUJsLlRqXp3q1Y31RBynlki2HSi1IUMlI TUPOuoaje3Nv53sbZDEwlsAt5d2T+lbRW8pRPq0lvOk6SPKsaq1XNFDMjMFWT6l5kNxomm3lv5i9 This is an early 1999 LQ4 iron truck engine with iron heads. 09xpcWm3UfFkkjYRyLb3FxFWCO3+PkzsnKsu5Kkq9C8vfmT5S0nyXpUra5P5itYp20u41wowd54I VfQ604igoKbDpTArx380LS3PnUXVz5Ku/Mqi3sUgltlv0XkZLlHLTQNJAfRSQng0I+3Uv9kFVCro 8fwKW+HsK4qoT69ocGk/pifUbWLSCquNReaNbbjIQqN6xPCjMwANd8VRVtc211bRXVrKk9tOiywT Today we have a quick video about minor differences between the cast iron cylinder head and the aluminum cylinder head. BGLa4SWKaduDMUdj8JDMa1bZsCph5d/J6bRfMen6lHrZbTNLjRLPRkgaOBGEJjnkUes6I07t6j8E When choosing a cylinder head for a particular engine application, one of the first variables that has to be considered is engine displacement. They offer heads with various intake runner volumes, stock and raised port locations, various intake and exhaust port configurations, valve sizes, valve angles, combustion chamber volumes and spring pad sizes to accommodate a wide variety of possible applications. per head depending on the application. If you’re confused by the bewildering array of cylinder head configurations that are available in the aftermarket today and need help choosing the right head for your engine, use the expertise of the people who make the heads to help you in the selection process. 274 Posts . Raised ports or relocated ports generally provide better airflow and more power. – 351C Australian block (used by NASCAR). uuid:be5a8875-8342-3645-9dc5-adf65bf4797a tl7YFegYq4kAVOwHU4q+aXsNDuPKeu6qmoTjS76ztZpbm20yGKMwy6tMyLBB9e5J+/RqK9KKG6kg rxz81Y/LF556TTNYub6IXWmQxvbWdxAvqC5luLRZRBNbuh9FZ5C0skyBQw4KzVxViukeZ/y/sRdt 3ZVjVCr3NCSRyCqKfadSqjb78qfzcu9evtRXW7e2gEM0ejQpqepySwGe4hkcNcSxtKqtHBxYRsta 1C1uo7uFYDOq+iBDcu/pMDBLUAcvio32RgV6VirsVePfmo2h3fm1bEajPa6jFDp9xfi2tLe7C2yT False 530Lbs. I will even entertain educated guesses if anybody's got one. 0+PzhJSktMTU5PRldYWVpbXF1eX1RlZmdoaWprbG1ub2R1dnd4eXp7fH1+f3OEhYaHiImKi4yNjo jxtVWKsrJIEdWVlIKsAQcVRWKuxV5V+aMHkqDzpoV5q8eqQ6veItraX2nyW4iMaSMGjmWZ+SIBcP yiWKdzE0qkx8j+2odW48jQ0O4VNbn8uPJl1qCahPYGS6jhuLZGM9xxWK7d5JwEEnAGRpmq1K++wx 8Go3F56lhdRyTW91axy3cbxwxmV2VrdZRQRqW9wDTocVQR/M3yOCo/SX22ZBSGc0KyrCSaR/COTV The same port profile can be ­replicated with a new casting. F/5UL56s9b1TU9K1u1gZ2mbR0LzxmJfX/cRs8KJJH/os9xGzxtyXl8PiFUJe/lJ+cUtsmgPqIntr IiuptPG6WEkxV4Hlk9Tga+oBxB4MFX0wAAAB0GwwK8i/MYeTD56rrdvqJu1s7X0rqza2MYQ3Y+Ar ZtwEPQ13OwV6LirsVS7X11dtOA0lyl4J7Y1Hp7wi4jM4/eBl3h5jx/l3pirwyxGrHU7aO4tNDvIB Edelbrock Aluminum heads are supposed to be 15lbs lighter (per head?) sTai1eMLbkGX6xyltwZkcKvErINmxVlvkPy/rl897P518p6PprukZtobW3t5AX9e5aTk4eYsaMr7 Thanks! On many heads, relocating the spark plug closer to the exhaust valve adds some horsepower. 5mub/S9R8oTQW8dndNpLQXOqNG91DGirauVW3EqSw6fDIp5faX+Z9iqSWvl3TZGs7G5/L92v9Sur Hcb7nxOKpTB+SvkNRdJd28+oQ3BcRQXVxIUt4pK1ggCGMrGC5IqSamta4qjF/KbyAl5b3i6WVntZ qrzXV9a12TTLR/8AExtAum8OaXWthjLHLcJKzhbQSApKnL95+94QkNVGdgVfQC/ZG/Lbr44FeWef I went to Edlebrock's site and found every spec under the sun except weight. The next weight-saving measure would be a set of aluminum heads. eLNNNcSr6MYtww2XivA7qoYoyeXdevNA896jrOoaVE13Mt4NQso5orYj11M4eBZDxEY9SM1AAHIK MVSDQPLvmnzPc6npVv531KxubKGOO5uIxfHjMt3cJMsTy3IjYH0d3QE9gY1BixV7Xo9hJp+k2djJ 5jit7OzCh4wxWrxNLzMLEiMsKqP2mJNArNdP8t+XdOKHT9LtLMx09M28EUXGilBTgopRXYfInFUx mt/mFbaPe3ttc6PqTR2SswvFjgS3n4WrXb+hJNNFz4xo4Y0oGWh7VVQk/wCbGiW+qTaXc6ffQ3sI CN/UU/AXiX1KEfu+WKvMILT8tx5MvNTt7vzFFo62sE08Imsp2dZrq7sSqhjPH6nJ3DkMKLx4mtRh My point being, I also plan on building a 331 using my older 289 block in my '66 coupe. lVIngaEGYrWigfaUYFTW4/NvyNBdz28t3MotQxubg2tysUfGdbcfE0Y5hpW48k5LtuRtVVlOn39p Dan Masters' page that I referenced earlier has his own measured weight for a complete 302 with aluminum heads, manifold, water pump, and all accessories -- and it's only 424 lbs! epHPa6UfL723xag3oRL9Y9K4ZjF9ZjQUV68afH6hwqyz8uzrs3n131A6XJBDp1zFC1r+jWuUKagy V7aCQsYJrecXDRRiWs7vbPwAEiBuMnIx1etTsq9T0nXNF1m2a60jULbUbZHMbz2k0c6BwAxUtGWH If you hog out the intake ports and shove the valve open far enough, many heads can deliver impressive flow numbers. AQBIAAAAAQAB/+4ADkFkb2JlAGTAAAAAAf/bAIQABgQEBAUEBgUFBgkGBQYJCwgGBggLDAoKCwoK 1 If it’s a drag motor, you can go even bigger, maybe 350 to 360cc with a CNC-ported head. r93Mb6SG+ji1PTbKW6jMeqTXavLcfWYGBkkjcssW7q1QvJlwqz/8vrry5d/mhdXOnT3QuX069c2s You also need to consider vehicle weight, type of transmission (manual or automatic), torque converter stall speed (if automatic), gearing (transmission and differential), and most importantly the application itself (street, street/strip, drag, circle track, road race, off-road, etc.). W4aaeGVkieRApiGygMq9MCovypo35z2mrRXeva5Y6tAlxHDe2kEgQfVvSZXIUWkarIssomoKEqAp vylsb2Hz7fzN5Yl0yyawYQ6pcRaokrfHBS3Zr+aRWKAcahQTxqKLthV7MTQE+GBXz2tjBawwMv5c Also found the Edelbrock heads were 22 lbs each lighter than the cast iron heads. False