Thread: question for kane
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10-15-2009 02:07 PM #1
question for kane
hi paul ive learned alot from you already from reading archives. but on one topic i was confused. you told a guy his c8ve heads had non adjustable shaft style rockers. i have a set of these heads on my unfinished 460 project and these could have no way had shaftsyle rockers or pedistal type either. i bought these heads from a guy who put them on a 30 over 460 with flat top pistons. and it had to much compression. these heads have new valves, and hard wear i traded a set of nice d3ve heads for these c8ve heads and have since installed new studs and guide plates and have bolted thm to a 1979 era 460 rebuilt using stock crank,rods, pistons. the stock 460 pushrods measured 8500. i bought a set of length checking pushrods and using a 1.7-1 crower roller rocker i came up with 8550 to be the right length for the puhrods and when i checked for availability it turned out to be exact length for 429 cobrajet and super cobrajet. these heads were thought to be from a 68 thunderbird(thunderjet) but with canted valves,adjustable valvetrain, and huge ports could they be early cobrajet heads? am i on the right track on the pushrods? any help would be appreciated thanks
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10-15-2009 07:41 PM #2
Those heads have screw in studs. They went to the pedistal rockers in 72 I believe..The "385" Ford big block never had rocker shafts to my knowlege.I remember when hot rods were all home made.
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10-16-2009 12:46 PM #3
question for paul kane
yes they have screw in studs. im trying to find correct pushrods. the pushrods from the 79 460 measure 8550 i took a length checking pushrod 1/2 inch longer than stock and it looks like it would work. closest ive found is an 8650 or 8700 or 8.750 for 429 scj or a 9.250 which is a big block chevy rod.hoping paul kane would know which ones to use. im running a hydraulic cam if that helps. any info would be appreciated i know im not the first to run these older heads for more compression the heads hve been rebuilt with hardened seats stainless steel valves and have had a healthy port polish job. they dont apear to have been suface milled so im hoping to raise compression from 8.2-1 to 9.8-1 . again if anyone can help id appreciate it. mark....
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