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Gen VI 489 +20 build

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Old 01-04-2017 | 07:52 PM
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Industrial/agricultual; pumps. generators, etc.....big market

There is a 632 (10.2L) out there with piston oilers and etc. Cool !
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Old 01-04-2017 | 08:02 PM
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Originally Posted by mike tkach
what was the price tag on it,looks interesting.
http://www.jegs.com/i/Chevrolet-Perf...28586/10002/-1

http://paceperformance.com/i-1999064...te-engine.html
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Old 01-04-2017 | 09:39 PM
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Originally Posted by HawkX66
There are a few different versions. Mine had these heads. P/N: 19256821 2.06"/1.72" valves.




Here's the new heads:



Hard to tell on my phone, but man, that looks like some big ridges around the valves. I would think that would really kill airflow and create some hotspots
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Old 01-04-2017 | 09:45 PM
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Originally Posted by MILD THUNDER
Hard to tell on my phone, but man, that looks like some big ridges around the valves. I would think that would really kill airflow and create some hotspots
Could use some chamber work for sure. About 3-4 cc's worth but I'm sure it will run well.
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Old 01-05-2017 | 07:52 AM
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Originally Posted by MILD THUNDER
Hard to tell on my phone, but man, that looks like some big ridges around the valves. I would think that would really kill airflow and create some hotspots
Originally Posted by getrdunn
Could use some chamber work for sure. About 3-4 cc's worth but I'm sure it will run well.
Those pics were the heads before they had the work done. They'll definitely get some smoothing out.

So just to be sure, there's no way to block off the extra coolant passage on the Gen VI without the Gen VI gasket and it is necessary? I just want to make sure there wasn't any confusion with all the Mk IV vs Gen VI talk.
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Old 01-05-2017 | 04:26 PM
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Great looking Camaro!!
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Old 01-09-2017 | 07:05 AM
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I got my heads back this weekend and the coolant pouring up into the intake theory with Mk IV gaskets on a Gen 6 block doesn't work... The coolant passages in the head are connected. Can anyone else explain why you wouldn't want to run Mk IV gaskets on a Gen 6? I just don't see it. The only difference is the extra passage isn't machined on the block.





Here's what my bowls look like now. It doesn't look like there is any real shrouding going on. I might still smooth them out a little and polish them. We'll see.




Again, thanks for any help.
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Old 01-09-2017 | 09:38 AM
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Have you checked Cometic's website for the correct gaskets? They have a great selection for the gen 6 blocks. No need to chance it if the correct gasket is readily available
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Old 01-09-2017 | 01:10 PM
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Originally Posted by snapmorgan
Have you checked Cometic's website for the correct gaskets? They have a great selection for the gen 6 blocks. No need to chance it if the correct gasket is readily available
I'll check them out. I was looking at Jegs and Summit. Still, looking at it, it doesn't look like it's an issue. Thanks.
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Old 01-09-2017 | 01:24 PM
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