455 build questions

Old July 30th, 2014, 09:49 AM
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455 build questions

Im finally finnishing up my 455 and before i bolt my heads on im curious what the opinions are for which head gasket i should use. I have two in hand, I can go with the thinner one and get 9.1 comp or the thicker and get 8.6( both rounded down). Im going to run a centrifugal supercharger and my idea was to run more comp and less boost at first and if the engine lives through a season ill go back through and build it to hold more boost/hp and go with the thicker head gasket/less comp.

455 .030 over
c heads exhaust milled flush with bowl work and minor port clean up and crossovers filled
stock rockers
torker intake
lift .509 .498
dur @ .050 228 238
dont have any yet but will be running headers

Last edited by young olds; August 2nd, 2014 at 08:45 AM.
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Old July 30th, 2014, 10:19 AM
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I'd put it at 9:1. I'd leave it there with the blower too.
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Old July 31st, 2014, 01:04 PM
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Anymore opinions on head gaskets? I've got one head where I'm happy with it and want to start bolting my engine together, I'm getting excited and running out of time.
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Old August 2nd, 2014, 08:49 AM
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I went with the thin ones for 9.1:1(rounded) comp. I have a few more questions for anyone that cares to share there opinion. I havent purchased a carb yet, I now what im getting but am unsure on cfm. Since im running it in a blow through application Idk how to size it, was just gonna go with a 750 but figured id get opinions. also for anyone thats familiar with centrifugal blowers, vortech v2's and procharger p1sc's seem to be in my price range, what are the opinions on which blower?
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