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Old 03-12-2012, 07:28 PM
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looking for suggestions- street driven 454 buildup

Hey guys im helpin build up a 454 for a friends nova, it was a rebuilt block thats in geat shape bearing and cylinder wise, it has dished 2 valve relief pistons, 781 heads with double valve springs, edelbrock performer intake, flowtech longtubes, a 750 performer carb, and mallory dist.

It ran good but he wanted a little more and wanted a cam put in it, we tore the motor down and pulled out the cam and it had some numbers on one end, i googled it and it came back to a crane energizer # 103062, the lift is about the same as the cam we wanted to use but its power band is 3000-6000 which i think is too high, its getting a lunati voodoo 60202 262 dur. With 1400-5800 range. Sound like a good choice?

Hes got someone thats gona portmatch the heads and intake, since there gona be apart, really thinkin about upping to 2.19/1.88 valves since it seems these heads like them, would that be ok for a street car?

Also with the stock dished pistons and the open chamber heads i know that puts us somewhere around 8:1 compression, we are lookin at some piston and ring sets and are considering the speedpro hypereutectic pistons with a .100 dome, that would put us close to 9:1. Would this be a good choice?

Any other recomendations would be welcomed, lookin at doin it right the first time, and does this combo sound like it could be close to 450hp?

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Old 03-12-2012, 09:41 PM
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Old 03-12-2012, 09:55 PM
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big block 454

yes to all but i would use cam thats in the motor being there both good cams most important with your set up is the pistons thats were you will get the power that you want the pistons and heads are smoggier low horse hope that helps
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Old 03-14-2012, 12:33 AM
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First lets start with the heads, that is a good idea of upgrading to the larger valves. You also need to have the chambers cc-ed. The chambers could be anywhere from 120-124 cc if they have never been shaved. Use +.100 11/32 valve stems as they are lighter. Next after you know the chamber size you can select your pistons such as KB201. With 118 cc these pistons would give you 9.173 compression. Camshaft you might take a look at Comp Cam 11-650-47/274H-10. .552/.555 lift and 229/236 duration @ .050. I would also check the deck height,.005-.010 down in the cylinder would be good. Over 450 hp and 500 lbs of torque isn't bad for the street. Remember good intake, headers, and 2500-3000 stall converter + 373.1 rear gears and 850 cfm carb.
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