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Discussion Starter · #1 ·
Looking for info as to what years these heads were used and the combustion chamber size and on what cars pls.. Googled some stuff and it came back 1980 - 1982 and 1980 to 1985 and one place came back with 1976 - 1985...
Apparently they were used on 267 and 305ci engines.. Not looking for whether good or not, just would like reliable info...
Thanks!!
 

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are they 416 heads? I havent heard of 415s... but if they are they have 58cc chambers 1.84/1.5 valves. as for the cars im not sure... I think they came on 3rd? gen camaros with the hi output 305s, and the 305 that came with my elco (not original motor) came from a 1980 caprice so caprices also. not really to sure. but id guess most of them. They are one of the best 305 head.
 

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Discussion Starter · #5 ·
They are 415 heads NOT the much ado 416 units.. What I am trying to get is the combustion chamber size.. Double Vision says "55cc" and you say 64
Kinda think 55 or 58cc but 64 chambers??? Not gonna run 'em up much over 4000 rpms. Just want a small chambered head sitting on a 8 to 8:5 cr engine without costing really much..
 

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Discussion Starter · #7 ·
Just have a hard time believing 64cc chambers on a 267ci engine with 120horses.. To me it the number is 55 or 58cc.. I see a load of "cut and copy" information on various sites that have mal-information on them or missing info... The much "vaunted" 416 heads are from the same way, way, low on power 267ci Chebby coming in at 120horse.. Something wrong here, as, why would they lay a bigger "1.84" intake valve head on a 267 engine???
 

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Discussion Starter · #8 ·
Just took a look at the ChevyMania site and it does indeed say for the 14054415 and 14054416 heads that they are BOTH crack prone.. Something wrong here I believe.. Why are we "touting" the 416 HO units so much if they are indeed crack prone???
Still have no idea of the combustion chamber size of the unheard of 14054415 heads of the same era.. Anyone have any valid info pls...???
Thanks!
 

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Im assuming this engine is a 267.. 64cc sounds kinda high for a 267.. I looked up 415 heads and couldnt find any information at all. So I have no info for the combustion chamber sizes or valve sizes. But the chevy mania site said that 416s have 64cc chambers, thats wrong, unless I missed something 416s are 58cc. they varied alot from 53 to 60, you have to check your self to know for sure. I always thought about using my 416 on my 350 so I did a lota research on them(buts its the internet and other forums) anyway I gota set of 062 vortecs for 150 bucks so never went for 416 route. As for the crack prone, I never heard about the 416s being crack prone, but im sure I could be wrong, but another thing to point out about the chevy mania site is that it doesnt list 882 heads as being crack prone.. that gave me a good laugh they most deffinetly are. SO, I would look somewhere else for info on chevy heads.
 

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I just checked the mortec site and confirmed the cc sizes were what I thought, though no info on 415s just that they were on 267s and 305. So that parts right, if I had to assume though my bet would be on 53cc chambers. or 58.
 

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I agree the 64cc is more than likely wrong. Lots of sites have wrong Info. There are many heads that are light weight castings and crack prone. The Vortecs are also light weight castings and crack prone. 55-74 heads are all heavy castings, stating in 75 Chevy started the light castings.
The light and heavy weight castings are easy to identify. Here's how>> http://www.chevytech.com/3c10o8.html
 
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