hemi heads
yea i know what hemi is, but if your talking about putting mopar beads on an sbc then your going to be in for more work than your ready for. Anything is possible I guess with the right budget, but its def not going to be worth it. Stick w/ stock castings 
BUT thats NOT what he was asking about. he was asking if there are hemi heads for an LT1 NOTT about fitting mopar heads onto his LT1, so if anything your "Ive never seen an aftermarket LT-1 head with a hemispherical combustion chamber." is more correct and helpful.
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From: Decatur, TN (N-W of Athens)
Yea, not for an LT1 at least. My shop teacher showed us a video of some SBC running hemi combustion chamber with OHC, was probably a Northstar motor :\
On an unrelated note: The 2.6L I4 in my Conquest was Hemi
On an unrelated note: The 2.6L I4 in my Conquest was Hemi
Sonny Leonard makes them for big blocks:
http://www.sonnysracingengines.com/p...eads/hemi.html
I've never seen any made for small blocks though.
http://www.sonnysracingengines.com/p...eads/hemi.html
I've never seen any made for small blocks though.
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From: Decatur, TN (N-W of Athens)
My 2.6 wasn't center-plug design though, it was exhaust-side plugged.
From what I understand, the Hemi-head isn't exactly the most efficient head, but back then it was, and that's kinda what made it more famous... Anyone know if there's any truth to that?
Also that GM designed it, but sold the idea to Chrysler (I think who originally used the Hemi in the 50s), because they didn't think it was a good design. Be that the head, or the whole engine, I'm not sure.
From what I understand, the Hemi-head isn't exactly the most efficient head, but back then it was, and that's kinda what made it more famous... Anyone know if there's any truth to that?
Also that GM designed it, but sold the idea to Chrysler (I think who originally used the Hemi in the 50s), because they didn't think it was a good design. Be that the head, or the whole engine, I'm not sure.
Launching!
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Here's the thing, the hemi, or hemispherical head is a design. The LT1 is basically a fast burn combustion chamber cylinder head...the Hemi, not exactly. The hemi lives on the concept of equal combustion based on location of the spark plug. Fast burn head designs depend on the speed of the combustion event going from intake to exhaust side...2 completely different things. That's one of the reasons most people don't go with "dome" pistons with a vortec or LT style head....Go with 'stock style' castings.
Sonny Leonard makes them for big blocks:
http://www.sonnysracingengines.com/p...eads/hemi.html
I've never seen any made for small blocks though.
http://www.sonnysracingengines.com/p...eads/hemi.html
I've never seen any made for small blocks though.
GM made at least 1 hemi sbc for a smokey yunick z28. they pop up every now and again at auction or in hot rod but other than those i've never seen them on anything else. they aren't practical for the most part, loads of custom parts would be required, even if you found an off the shelf head.
On The Tree
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From: Catawissa PA
Diminion/Areo made a head along the lines of what people refer to as hemi heads. But there were only a few sets made, and they were not cheap!
I only know of three sets, and of those only one person has a running engine at this time.
The heads are 4 valve, W/Spark plug centered.
below are pics of Unstable Bob's heads. His 396 LT1 has been a long term project:
http://www.camaroz28.com/forums/show...0&postcount=95
I only know of three sets, and of those only one person has a running engine at this time.
The heads are 4 valve, W/Spark plug centered.
below are pics of Unstable Bob's heads. His 396 LT1 has been a long term project:
http://www.camaroz28.com/forums/show...0&postcount=95
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From: Decatur, TN (N-W of Athens)
Because you thought he was talking about putting Hemi™ heads, on a SBC, instead of what he meant with the hemispherical design.
And this is just my opinion, but I wouldn't consider Bob's 32v heads to have a hemispherical combustion chamber. It just looks like an elongated fastburn design to me.
And this is just my opinion, but I wouldn't consider Bob's 32v heads to have a hemispherical combustion chamber. It just looks like an elongated fastburn design to me.
Because you thought he was talking about putting Hemi™ heads, on a SBC, instead of what he meant with the hemispherical design.
And this is just my opinion, but I wouldn't consider Bob's 32v heads to have a hemispherical combustion chamber. It just looks like an elongated fastburn design to me.
And this is just my opinion, but I wouldn't consider Bob's 32v heads to have a hemispherical combustion chamber. It just looks like an elongated fastburn design to me.
otherwise if its about making power get an ls based engine because they make similar power per cubic inch as the almighty hemi engines
i say this because if your looking for off the shelf "hemi" heads for your LT1 there are none
unless you of several million greenbacks you'd like to sink into development