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8.1L engine with Raylar heads

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Old 12-12-2005 | 10:43 AM
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Default 8.1L engine with Raylar heads

Anyone here using a set of the Raylar heads, cam, intake combos? If so I would like to see before and after dyno sheets and hear your comments on these parts.
Old 11-26-2011 | 03:21 PM
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bumb, i need to know this too,
how hard is it to swap cams on the 8.1
Old 11-27-2011 | 10:42 AM
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Not hard, Pull fan, Pull water pump, Pull balancer, pull 6 bolts on timing cover. Then pull 7 bolts each on valve covers, Pull all rocker arms pull all pushrods, Pull intake 10 bolts and misc fittings pull oil pump drive, pull all lifters and retainers. Pull 3 bolt on timing chain to cam. Pull 2 torx bolts install longer metric bolts slide cam out trying to avoid damaging cam bearings. reinstal cam and parts unplug coils before starting and reprime the enigne with oil pressure. plug in coils and start.

You may also change valve springs which isnt that hard as well.
Old 11-27-2011 | 03:34 PM
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good to know ! thanks

how much time do you think itll take?
Old 12-17-2011 | 11:57 AM
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a day, tierod is the only person that has used raylar stuff that i know of. I am borrowing his raylar intake at the moment will be doing dyno comparison here soon.
Old 04-12-2012 | 02:51 AM
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Well i bought a full raylar motor heads intake crank and camshaft...
So next december i can give ya some dyno numbers since i should be back from afghanistan by then
Old 04-12-2012 | 03:49 AM
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good one guyz..........
Old 04-15-2012 | 08:29 PM
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From what I've read they are very good parts if you have money. However on here or another board a guy did everything from them and his dyno numbers where very low. I'm thinking like mid 300 whp and mid 400 tq. Cant remember his screan name but it was on a avalanche
Old 04-15-2012 | 11:01 PM
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Originally Posted by Kerr
From what I've read they are very good parts if you have money. However on here or another board a guy did everything from them and his dyno numbers where very low. I'm thinking like mid 300 whp and mid 400 tq. Cant remember his screan name but it was on a avalanche
This guy?

https://www.performancetrucks.net/fo...1-dyno-471565/
Old 04-16-2012 | 05:02 PM
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I have a feeling force feeding then will help a bunch too plus bigger cam etc. I already dynoed with the intake. I just dont have the sheet and i choked up the exhaust when i did it
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