Indulge Me On HP/ci

**vmaxed** · 01-30-2012, 11:15 AM

Say you had a 12.5:1 468, A 10.5: 496 and A 9.5:1 509 BB2 PLUS heads cam shaft 258/268 @.05 and .680/.70 lift 110LS and 2-750,s witch one would make the most HP? The 509 having a 4" crank.

**steelcomp** · 01-30-2012, 11:19 AM

Originally Posted by vmaxed

Say you had a 12.5:1 468, A 10.5: 496 and A 9.5:1 509 BB2 PLUS heads cam shaft 258/268 @.05 and .680/.70 lift 110LS and 2-750,s witch one would make the most HP? The 509 having a 4" crank.

Probably the 468, maybe the 496, but not the 509.

**cfm** · 01-30-2012, 01:14 PM

I'll put money on the 496.

**steelcomp** · 01-30-2012, 02:43 PM

Fir fun I just ran some numbers. The engine build software I use says 798 for the 468, 791 for the 496 and 781 for the 509. It's not a sim. program like DTD, it's more of an engine design program.

**BigSteve** · 01-30-2012, 02:54 PM

Originally Posted by vmaxed

Say you had a 12.5:1 468, A 10.5: 496 and A 9.5:1 509 BB2 PLUS heads cam shaft 258/268 @.05 and .680/.70 lift 110LS and 2-750,s witch one would make the most HP? The 509 having a 4" crank.

The 468 motor race gas or mixture of it
the 496 premium gas
the 509 could get away on 87-89
Each motor makes power but at what cost of fuel and can you get it where you want to boat ?

Me I would run the 509 and add a big nitrous w/ alky if I need the extra power
from time to time

**River Rat 005** · 01-30-2012, 05:30 PM

Looks like I may have been under guestimating my 468. Maybe I need to run my build through one of those programs.

Tim

**cfm** · 01-30-2012, 06:28 PM

Originally Posted by River Rat 005

Looks like I may have been under guestimating my 468. Maybe I need to run my build through one of those programs.

Tim

Those #'s are unrealistically high for the parts/specs presented.

**tigertooth** · 01-30-2012, 07:11 PM

Originally Posted by vmaxed

Say you had a 12.5:1 468, A 10.5: 496 and A 9.5:1 509 BB2 PLUS heads cam shaft 258/268 @.05 and .680/.70 lift 110LS and 2-750,s witch one would make the most HP? The 509 having a 4" crank.

468 hands down with that cam. 700hp on Gears dyno.Just ran a 475. Same basic cam, AFR 305s with cnc chambers and single 1050. Made 305@6800.

**jimclauss** · 01-30-2012, 07:25 PM

Originally Posted by steelcomp

Fir fun I just ran some numbers. The engine build software I use says 798 for the 468, 791 for the 496 and 781 for the 509. It's not a sim. program like DTD, it's more of an engine design program.

Numbers are a little high for what your talking about. a 509 with 9.5 compression making 781 hp not on you life. Dream on.

**EVILFORCE** · 01-30-2012, 07:28 PM

Originally Posted by steelcomp

Fir fun I just ran some numbers. The engine build software I use says 798 for the 468, 791 for the 496 and 781 for the 509. It's not a sim. program like DTD, it's more of an engine design program.

Now steel. You know you pulled that out of your hat. Not enough info provided. What sre you up too?????????

**hotbo** · 01-30-2012, 07:32 PM

Originally Posted by tigertooth

468 hands down with that cam. 700hp on Gears dyno.Just ran a 475. Same basic cam, AFR 305s with cnc chambers and single 1050. Made 305@6800.

wasnt it 705

**jimclauss** · 01-30-2012, 07:37 PM

Originally Posted by hotbo

wasnt it 705

How your within about 10 hp. thats what my Dyno would say.

**tigertooth** · 01-30-2012, 07:38 PM

Originally Posted by hotbo

wasnt it 705

You are correct. My spellchecker don't work on X.R

**jimclauss** · 01-30-2012, 07:43 PM

Originally Posted by cfm

I'll put money on the 496.

How much do you want to lose???

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Indulge Me On HP/ci

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