I just bought a new car (see pic) and noticed today that it had double hump heads. What year did these come out? Thanks, Mike
mortec says 3782461....64-66...327......Camel hump,no accessory holes,160/62cc port volumes,62cc chamber 3782461X...60-63...283/327..Camel hump,no accessory holes,larger 172/64cc port volumes, 62cc chamber I saw a set of 1963 coded 461s a few days ago.
My new build has a nice pair of 64' double humpers;...sitting on top of a mild-cammed 65' 283. I've had a lotta hump' heads. They're gettin' hard to find where I'm at! Many hi-po SBC's ran those heads in the 60's. They breathe REAL nice!
I have a set of 291's for my pick-up. They were on my '64SS 327/4sp. Would get that load rolling nicely.
I won't argue with Mortec, but I always thought that they were 327 and up making them 1962 and up. Factory installed My 63 Corvette had them but it was a 340 HP and had the smaller intake valves.
Tommy is right. The camel hump heads never came on any 283's, they were 327 and up. His '63 engine would have had the 1.94 intakes and 1.5 exhaust. The first 2.02/1.6 heads were on the '64 365/ 375 hp 327. they were also used on the 350 hp (hydraulic cam) 327 found in Chevelles and ChevyII's. Frank
GMPP recast those cylinder heads a few years ago. I put a set on my 383, though in hindsight, I wished I'd of gone with Vortec fast-burns instead and put the iron heads on something worthwhile. Kinda silly having those under the hood of a '75 Chevy truck...
' Yes, they did, and that's where they got their "fuelie head" moniker. I've got a 1961 Hot Rod with a road test on the 315HP 283 'Vette, and it has these heads on it. The first ones were cast aluminum, but they had problems with them and went to cast iron. The last set of aluminum ones I saw were at Hershey for $2500, and that was at least ten years ago.
Here is a June 17, 1962 photo of the Lyndwood rail I'm restoring with the Camel back heads. Sure hope they are correct, I've got half the cost of a cowl less '32 Vicky tied up in their rebuild.
They Were The Deal 30 Years Ago But I Prefer The Newwer Vortec Heads They Flow Better Are New And By The Time You Get A Set Of Double Humps And Get Them Done Over Thell Cost You More Plus No mounting Holes Is A Pain In The ASS. And There Still 30 Year Old Castings Which I Like Things With History, But If Someone Has A Set They Think There Gold And They Just Are Not! Just My .02:d
I'll take a set of camel humps over vortecs any day of the week. Badest motor I've ever owned had a set of them. I am still trying to build that motors match today and hadn't hit it. if you really want to haul get some AFR heads. Vortecs are shit. Its about building a cool old motor with cool old parts - like it was back in the 60's.
I have, and still run Fuelie, or Camel hump heads on small blocks where I can. We should thank Arkus Duntov for them when made the 1957 283 Fuel injected engines. The only problems I have had with them is when running high spring pressures it would pull the castings apart. Most ALL of the camel humps had press in studs and machining is required to install screw in threads. I ran a 365HP 327 in my 61 Falcon gasser, the 30/30 duntov solid Cam has a very unique sound and requires fiddling with but lb. for lb. it's hard to beat that engine from detroit. I have made 500HP with the heads easily. Finding the gas to run the higher compression ratios is the tough part. The 365 HP motor has 11.5:1 compression which require 100 Octane. I need aviation Gas to run the 13.5 pistons
Sure...but my truck was still a decade of away of even "being". My point was application for particular use, not being cool like it was in the '60s. If the engine went where it was supposed to (a '55 Chevy), I'd stand behind my choice of head.
oh yea if your going for poriod correct its got to have humps on it but for a driver cost,reliablity you can't beat vortex heads there cheap come bolt on handle loads of lift and easy to get! but for sure a drag or hood less rod 60's style you got to have them humps it was the best around back then.
If you want performance - go get a set of Iron Eagles - 180cc intakes for anything smaller than a 350.
yea, thats if you can get the pushrods to fit, or change out all the broken keepers they are shipped with.
yes I agree - vortecs aren't shit - they just limit you on your cool intakes and aren't period correct for a 60's or hoodless car. folks really notice accessory holes! I did see they have a new 2 x 4 vortec intake Damn Racefab - had some problems with those iron eagle heads??? that suprises me.
I believe there is more than one double hump head casting. You can tell by the threaded holes that these are later heads. 69-70 These are 3991462 heads with factory screw in studs and push rod guide plates. Before screw in studs became popular, lots of heads were drilled and pinned to keep the studs from pulling out.
Yes, converting early heads to screw in studs and pushrod guide plates is no big deal. Years ago, I bought the tools from Crane, and paid for them by converting other people's heads for them.
the best flowing Factory equipped heads ever made bu GM for the SBC are the Vortech heads. In cast iron anyways, this has been hashed out over and over in the mags, Vortecs outflow 461 Camelhumps over and over. pick up a issue of Chevy high performance once in awhile, its amazing what you can learn. only thin i hate about the vortechs is the center bolt VCs. id have to run adapters on them. and you can have a pair BRAND NEW from Scoggin Dickey, Modified for the smal diameter valvespings and up to .550 lift for about 600$. rebuilding a old set with Guides, valves, and springs and all that other BS will cost you that. why waste money on it when you can have better for less money.
the only thing worse than the quality control at that company right now is ther customer service. I hope they turn things around,I like their stuff
I saw an article in SRM a few months ago that said you can get vortech heads from Chevy that are set up for perimeter bolt valve covers. Slonaker
try'n to build a 327 now for the 49,(lack of $)and have thought about the heads alot,the heads that were on the motor got traded off so I have to get new heads,and being broke I am go'n with the vortech heads becase of the price diff and perform. diff of get'n a set of humps gone through and rebuilt to breath like the vortech,My cars got alot of mix matched parts hold'n it together,keeping it period correct is not really on the agenda,so I would rather have H.P. than a correct looking motor-head combo,and from the write ups and personal accounts it seems that the vortech heads are the wat to go. just throw'n in my .02
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