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Old 09-06-2011, 10:40 PM
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head #3782461

are head #3782461 good heads or shud i get vortecs

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Old 09-06-2011, 11:01 PM
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those are early double humps, good hp head, they could be 1.94 or 2.02 intakes. Supposedly the vortecs outflow them, but you should be able to make some good power with those heads. What engine you putting them on?
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Old 09-06-2011, 11:11 PM
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they r 2.02 intake valves and they r going on a 355 i traded a set of 882 heads for them. they had bad intake valves so i have to get them rebult
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Old 09-06-2011, 11:31 PM
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That should be a nice setup. Flat top pistons? they are 64cc chambers so i think it would be around 9.5:1 with flat tops. What type of driving are you using it for?
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Old 09-06-2011, 11:37 PM
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actually they're 60cc im thinking of 462, they are 64cc, so your cr will be over 10:1
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Old 09-06-2011, 11:41 PM
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the pistons are flat top 4 valve relafe and acourding to the paper for them with 64 cc heads i shud have 10:2 cr and its going in a chevy k5 blazer wich will b a dailey driver and ever ounce in a while go in the mud and i was reading that the 461 wear 62cc
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Old 09-06-2011, 11:46 PM
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what cam and what size tires?
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Old 09-06-2011, 11:49 PM
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Right now i have a 327 300 horse power cam i think i will use and it has 32 10.50 r15 mud tires on it and a turbo 350 trans but idk the rear end gear
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Old 09-07-2011, 12:25 AM
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Keep in mind, the hump heads if they need rebuilt I wouldn`t waste my time on them. They don`t have accessory holes so they make bracket mounting alot of fun. They need hardened exhaust seats installed to use with unleaded gasoline. Add that to the cost of the rebuild, (guides and etc) your looking at around $800 clams. I would get Vortec heads that have accessory holes, hardned valve seats, plus make 30 to 40 horses over the hump heads. If the valves need replacing in the hump heads, then your looking at another $150 for valves and getting them seated. My best advice is stick the hump heads on ebay. those suckers on there will bid on them like crazy. Look on your hump heads and see if you see a "X" on them anywhere, if so they are the 461X casting which uses a 10cc larger runner than plain 461`s.
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Old 09-07-2011, 12:36 AM
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tey were built for a 383 stroker raceing moter and the guy had the cam set wromg and bent the intake valves so all i really need is the valves
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Old 09-07-2011, 12:43 AM
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Te 461's have been ported and was comptle rebyilt and they put them on the moter had the cam set wrong and droped 2 intake alves in each head into the piston and bent them
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Old 09-07-2011, 12:52 AM
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You do what you like. But if it`s got bent valves you have to have them checked for other damage in the valve guides as well. Do they have hardened exhaust seats? if not unleaded fuel is going to cause the valve to pound away the seats and the seats won`t last long.
Also, no accessory holes, since all I use is serpentine systems I couldn`t use them, but, even with the v belt set up they were a pain in the assets to set up. But as mentioned, do as you wish. just telling you the short comings of them.
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Old 09-07-2011, 12:58 AM
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Well one of the heads is cracked by the valve guide so im pretty sure the heads r junk now
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