Quote:
Originally Posted by Squidward
Glad you found it!
IMO, I don't think you would see a benefit going big valve. I say this as someone using 2.11/177 valved #12's on a 350. My choice was largely due to availability: They had the right CC's for desired compression, they were ported/upgraded, they were priced acceptably, ready to bolt on, and they were local.
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Noted. Do you think I would benefit from porting work? I read conflicting info about 350's if it is worth the work.
Quote:
Originally Posted by VCho455
Does the 65cc head have an "as cast" combustion chamber? The KRE 65cc heads come "as cast" not with a CNC machined combustion chamber like the 74cc and 85cc heads. If it has a machined combustion chamber it didn’t come from KRE as 65cc head it was cut to that size like mine were.
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The 80cc head came with heavily cast raised lettering "
KRE 6500" and then very lightly raised cast number on the other side which I think reads "
1395R" then a number 6 below it which seems to be printed on with two circles around it.
The 60 cc head also came with heavily cast raised lettering "
KRE 6500" and then very lightly raised cast number on the other side which I think reads "
04552"
Quote:
Originally Posted by HWYSTR455
Doesn't the 350 block have bore chamfers? That might be a concern when going to a larger valve.
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Yes, mine has bore chamfers. I think I read some of the 1968 blocks did and others did not. Not sure what month it changed.
Quote:
Originally Posted by Jay S
You need to call KRE and have them make that head right, which will require a different head. Appears that one head had the wrong CNC (85 cc) chamber program when it was machined. They probably did milled it and brought it down to 80cc.
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Right, so they probably took 5 ccs off both of the base heads like we requested but didn't realize the driver side was 85 instead of 65 cc?
It doesnt make sense that the cast numbers say KRE 6500 though.
Can't I just mill that 80 cc head down to 60cc to match the other? From what I can tell, it looks like the same head except taller.