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Old 02-20-2013, 02:12 PM
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BBC 454 hp estimate

Hi guys,
Fairly new here and am building 454 and am curious what hp numbers I might have. First BB. Had a few SBC's..
Ok, I have a .30 over 454 (2 bolt main with all ARP bolts on everything)
Forged stock crank
Truck 7/16th reconditioned rods.
Forged pistons
9.5-1 compression
049 heads cut to 2.19 /1.88. Unshrouded and mild port work
SS valves with roller tip rockers
280 magnum comp cam / 2k-6200 rom range
Single plane weiand w/ 750 DP Holley.

Exhaust unknown yet...
Am I in the realm of close to 550hp ya think???
Decent combo????
Thanks all!!

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Old 02-20-2013, 02:31 PM
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maybe a little over 400.How did you decide 550?
an LS-6 454 with 11:1,full floating rods,square port heads,Al. intake,780 carb,big cam makes or is rated less than 500 hp
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Old 02-20-2013, 02:32 PM
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Just ballparked it.... No rhyme or reason....
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Old 02-20-2013, 02:44 PM
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the torque should be over 500#.should go well,depending on the vehicle?
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Old 02-20-2013, 02:48 PM
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Yeah, just wanted a nice solid motor that would run to 5700-5800 without busting anything... Hopefully this will suit my needs... I'm debating it in my 1/2 ton pickup or my v-drive boat......
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Old 02-20-2013, 03:16 PM
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if its a small rod motor,change the rod bolts and put good valves in the heads.The rat is a lot of fun.
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