V8 PONTIAC CYLINDER HEADS #670 Description NO RESERVE !                       GENUINE GM FACTORY This listing is for one pair of the famous 1967 #670 closed chamber  cylinder heads in very good general condition as seen. Will fit many Pontiac V8s. 326, 350, 400, 428, 455 . These are the first year for the 2:11 / 1.77 valves but they still employed the 72cc closed chambers and will dramatically raise your engines comp ratio.it is supposed that the ports on these heads  are slightly better in respect to velocity compared to later heads (note) the cast in tube just above the exhaust ports and under the valve cover lip. this is for smog pumps. you can see on later heads were this was deleted. these can be bolted right on or redone. they did not use any oil,but with any of our used heads we recommend new umbrella seals be installed. im throwing in a used set of chrome valve covers unless otherwise specified. As with all used items, we can not warranty these and must be sold as is. Although we have no reason to believe there may be any problems... these  heads were on my 76 trans am w/ stock 400 motor and made one helluva difference in hp/tq.if you are out to build a high comp. pontiac motor then these would be ideal.they weigh about 70 lbs unpackaged each.  Doesn't your vehicle deserve the best using only original GM equipment? Don't miss your chance to own these sought after heads now! See pictures for more details and please make sure that this is the part you need, as it is a non-returnable item.  Thank you.    If payment has not been made within 72 hours of end of auction, a case will be opened and negative feed back will be left.  67 68 69 70 71 72 73 74 75 76 77 78  pontiac  firebird trans am ta GTO Lemans  phoenix grand am prix v8 8cyl formula  nos oem oer 350 450 305 5.0 5.3 th350 thm350