Matched dated pair of gm 327 350 heads. As shown in the photos these heads are just completed and done correctly. Casting number 3927186 and date coded l-12-9 and l-17-9 so the end of 1969 and beginning of 1970. NO port work has been done to intake or exhaust ports. These heads are not painted that is how clean they are. Machine work includes stainless steel cleaning, magnuflex crack check, new anti wear bronze guides, 3 angle seat cut with radius from carbide cutter (NOT stone), the inside under the valves (throat aera) have been opened to increase flow, valves polished and faced as new, head gasket surface machine flat, machined for screw in studs and guide plates, pushrods slots opened for use with guide plates, washed and assembled. Includes as pictured new valve guides, new valve seals and o-rings, new Comp Cams valves springs part number 981-16, 3/8 rocker studs, moroso guide plates. All threaded holes are good. . These heads would interchange work on an chevy v8 283 307 305 327 350 355 377 383 400. 377 and 400 would require steam holes drilled.
Spring specs for cam information set up for hyd or solid flat tappet lifter or small hyd roller.
installed set up height is 1.740 with 100 seat pressure
example of lift at .460 open pressure would be 260
example of lift at .500 open pressure would be 290
coil bind at 1.100 and seal to retainer clearance is .560 so max lift would be .560
Sorry for the costly shipping but these are heavy and may have to ship separately.
Please look at all the pictures as they are a big part of the description. Please DO ask questions. Also please do look at my other auctions listed. If you are not sure you want the item do not bid buy.
As with all my auctions, ships ASAP, and most often priority service, USPS, Fedex, UPS and ASIS. I will combine shipping (when possible unless really large or heavy) at an additional reduced amount of your winning bids. I will send a correct total for shipping with multiple wins.
ONLY ships to continental US states. Paypal payments within 3 days of end of auction or relist.
I do offer a return (with bidder return shipping expense) only if description is largely off.