8.1L engine with Raylar heads
#1
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.
#3
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.
You may also change valve springs which isnt that hard as well.
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#8
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
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