I'm new to this engine building lark, and need pointing in the right direction! I'm building a 258 c.i. SBC to run on the salt. I need to get a set of double hump heads. The problem is twofold. 1. They must have 1.94 and 1.5 valves, as its such a small bore, and 2. I haven't a clue which cars or trucks I'm going to find these heads on! I thought of using Vortec heads. These would give me the right size valves, but I'm restricted (by cost) to standard flat top pistons resulting in a really low compression ratio. I'm starting with a 262 motor, destroking it to 3.00 using 283 small journal rods. and using the 3.7 bore. I need some heads, I need some help, where do I look!!!! Cheers guys, Stewart
you won't find them on cars, you'll find them in machine shops, on epay, at swap meets, and in people's garages and sheds. And maybe the hamb cl***ifieds. They were used from the early 60s to the early 70s, several different casting numbers. also available over the counter from Chevy, mostly the 292 casting, for many years.
by the time you buy and have a set of fuelie heads rebuilt you will have spent as much money as going out and buying a set of dart 220 cfm heads ***embled.which is a far superior head compared to a stock fueler(flows approx. 155 cfm) one other economical alternative would be to get vortec heads(170 cfm)and have the block decked. decking the block will increase compression ratio and is about 100 bucks at any machine shop
Stewart, check your want ad, i have a set you can have, if you can figure away to have them picked up...Ed
how much is a set of dart 220 cfm heads? cuz i only gave 550 for my 2.02 double humps with accessory holes--stainless valves, guideplates screw in studs, everything was brand new
thats about what I sell them for completley done also.........and DART 220 heads would be way to much head. especially if he needs to run the 1.94/1.5 package
there's a 461 casting that has the 194 bore and a 462 that I believe has a slightly larger chamber by a few cc, it also has a 194 bore. I had a set, and I want to say that they were a '68 casting.
Ya, be careful on how complete of a set you buy. If you have bare castings or ones that need to be gone through, and have a good machine shop do the work you can end up with 800 bucks in a set, that's hardend seats and valves and guides n everything.
hey if the 1.94-- 1.5 are so good whats with the 1.94-1.6 cause I just spent a 650.00 bucs on my set they are 63s
look around. I picked up a pair of ported and polished 462 castings with new valves, seats, comp cams springs and guide plates at $220 for the pair.
I teach at a community college and have access to the machine shop, so valve seats, screw in studs, and basic machine work should come pretty cheap! This place is the ********. I put up a posting, my wife comes in whilst I'm typing (with 2 fingers!) and takes the piss. Within 5 minutes of the posting being up, Squirrel gave me a reply and Levi Cl***ics might have what I need, and hes fairly local!!!! As I said to Brett, Its like closing your eyes an making a wish... and having it come true!!! Thanks guys. Those who have offered parts I'll be in touch. Cheers, Stewart
Got a set of #041 fuellie heads and they are high compression/small valve size..keep an eye out for a set.....they are from around 1968/71, from memory...and were fitted to the australian monaro from the same years or so Ive been told.... ...Bert
Limeykid, why do you want dbl hump heads , they really dont flow that well and the smallest combustion chamber size is 64cc. With that short stroke and small bore size you need some heads with a smaller chambers to bump up the compression. you can find some newer heads from a 305 that will have 58cc chambers or the L98 vette aluminum heads were 58cc and came with 1.94/1.5 valves. these go for 5 or 6 hundred bucks in new or like new condition at the swaps. Another good cheap head might be a set from a 305 Vortec truck motor. it will have small chambers and decent flow but the Vortec heads take a different intake because of the bolt pattern and the ports are raised quite a bit. hth DJ PS, its always a good idea to have the block zero/paralell decked. It raises the compression slightly and reduces detonation (knock)
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