The Stovebolt Site Forums The Shop Area The HiPo Shop Dumb question but i need to know

will a set of double hump 327 heads 1964 fit a 1991 350 tbi center bolt valve cover motor i would like to change the heads and intake and put a carb on it ?????

Yes, but why? Those heads flow like crap compared to the newer ones. If you absolutely must be barbaric and run a carb on a newer engine, they make intake manifolds for the job.

have to use what i have in the garage on a budget

Like the fellow said, they will bolt in place.

A few minor things...

You'll need the earlier perimter bolt valve covers to match the heads. Obviously, the center bolt one won't work.

There likely won't be a threaded port in the earlier heads for the temperature sending unit that the late model engine will have. It depends on the age of the heads. Even if it does have the threaded hole, it will be the wrong size. They went to a smaller hole in the early 80's. From 1/2 NPT to 3/8 if I remember correctly. The point is, you'll have to figure out another place to mount your temp sending unit.

Lastly, any accesory drive brackets won't work. The early heads don't have the tapped holes in the ends for the brackets to screw into like a later model application uses.

Your best bet might be to sell the double humpers on E-bay and buy a set of inexpensive Vortec heads. If they are not drilled and tapped for your accessories, that could be a major problem for you. I have a set of 1960 283 heads with the same problem. Can't use them on anything I have currently.

if your building a little hot rod motor I would go for it,I like camel humps,even though they dont flow worth a crap compared to newer heads(stock or aftr mrkt)with out some work.if your not building that type of motor,(need'n the proper bracket mounting places)and wanting one for every day drive'n without every other day wrench'n I would save up some more parts for the garage that would work better with the motor,from my experience swap'n parts around like that always seem'd to eventually add up to an expensive experience.anyway just my two cents LONG LIVE THE CRAPPY FLOW'N CAMEL HUMPS!

You know, back in the day, those heads were the trick stuff. Now we have Vortec heads which outflow almost everything and make the Camel Hump heads look antique. Someday the aftermarket will develop something that'll make the Vortec's look like ancient history.

The camel hump heads flow well enough to be rated at up to 365 H.P. on fuelie Vettes. Don't know how much power you want to make, but I have these heads on my 400 and it has dyno'ed over 450 H.P. If that is flowing like crap, so be it. I used a Carter 825 Cfm carb for the dyno runs on a Corvette high rise manifold. The combination ran middle 11 sec. in 1/4 mi. drags back in the early '70's in a 1966 El Camino

Beware of the camel humps, if they don't have hardened seats. Without them this unleaded gas will burn up your exhaust valves in just a short time. the machine shop here charges 350.00 to install hardened seats. At that cost ya might as use your late model heads----just my opinion
I also ran camel humps on my oval track car in the 70"S and 80's, we used av-gas and addative to keep the valves cooler. I liked to mix 1 gallon of diesel to 10 gallons of av-gas. Made good upper cylinder lube....... keep on trukin'
resto44

It is very inexpensive to have a machine shop install hardened valve seats in any set of heads. With today's gas, it doesn't make sense not to do that.

Sell some of your spare parts and buy a manifold that will work with your carb and newer better flowing heads.

My old Harley didn't yet have the hard valve seats either,so I ran a capful of Marvel Mystery oil in each tank every time I gassed it up. It kept the valves alive and as a side benefit,it seemed to bring my octane rating up a grade. I still use it,and it still works that way.
Speed