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Vette makes 949 RWHP

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Old Nov 10, 2007 | 12:21 PM
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Default Vette makes 949 RWHP

Daren put the Vette on the dyno at school today and made a couple of pulls to see what kind of power we are making with the IRS before we remove it in favor of a straight axle.

Much to my surprise, on the second pull, it put down 949 RWHP at 7295 RPM. That number is N/A with an auto trans.

Wonder what it would make at the wheels with a 400 shot of juice?
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Old Nov 10, 2007 | 12:37 PM
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Old Nov 10, 2007 | 01:34 PM
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Wow almost 1000HP from a 454ci at the rear wheels, that would be well over a 1000HP at the crank, what are the specs on the motor ?
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Old Nov 10, 2007 | 01:41 PM
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Originally Posted by MotorHead
Wow almost 1000HP from a 454ci at the rear wheels, that would be well over a 1000HP at the crank, what are the specs on the motor ?
Not a 454 anymore.

It is a 14.5:1, BMF headed 565.

Guess I should have specified .
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Old Nov 10, 2007 | 01:57 PM
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BMF heads, I am getting a set for my 427ci
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Old Nov 10, 2007 | 02:00 PM
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wow - that's some impressive power
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Old Nov 10, 2007 | 02:01 PM
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Yahtzee!
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Old Nov 10, 2007 | 02:02 PM
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That is impressive.
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Old Nov 10, 2007 | 02:04 PM
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I feel sorry for your rear tires...
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Old Nov 10, 2007 | 03:27 PM
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I have set of CFE heads I'm going to use on a sbc


I'm thinking of build a 555 SBC, yes Sbc chevy, aluminum block tall deck

Last edited by l88rocket; Nov 10, 2007 at 03:29 PM.
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Old Nov 10, 2007 | 08:22 PM
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Is that with the stock IRS????
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Old Nov 10, 2007 | 09:27 PM
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Great numbers. I wouldn't be surprised to see it over a 1000 with the straight axle.
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Old Nov 11, 2007 | 06:58 AM
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Originally Posted by FRSTR90
Is that with the stock IRS????
No, It is a Tom's twelve bolt with 1480 Halfshafts.
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Old Nov 11, 2007 | 07:00 AM
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Originally Posted by ZL1powr
Great numbers. I wouldn't be surprised to see it over a 1000 with the straight axle.
That is what I am thinking too. I figure the HD half shafts and 1480 u-joints probably eat at least an extra 50 HP.

We will see.

Last edited by red79vette454; Nov 11, 2007 at 08:28 AM.
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Old Nov 11, 2007 | 08:38 AM
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Originally Posted by l88rocket
I have set of CFE heads I'm going to use on a sbc


I'm thinking of build a 555 SBC, yes Sbc chevy, aluminum block tall deck
That would be cool. The biggest I have seen so far is a 488 SBC. 555 would be an insane SB.
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Old Nov 11, 2007 | 09:04 AM
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Are you going to be selling the irs set up?
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Old Nov 11, 2007 | 11:50 AM
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Wow...that's some killer power!

It's going to be great to see the solid axle HP numbers. I really wonder if they eat that much? From some Super Stocker folks I've talked to they seldom gain much, if anything (one even lost going from a Dana 60 IRS like mine to a solid 12 bolt...which was REALLY strange!) going from an IRS to a solid as far as performance goes....but I've never seen back to back dyno numbers. This will be fun!

Those BMF heads are the real deal!

JIM
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To Vette makes 949 RWHP

Old Nov 11, 2007 | 08:21 PM
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Holy Toledo!
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Old Nov 12, 2007 | 06:09 AM
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Originally Posted by dewcustom

Are you going to be selling the irs set up?

Yes. We will probably be selling the IRS once we get started on the conversion.

PM me if interested.
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Old Nov 12, 2007 | 06:34 AM
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All that power, how does he get it hooked up.....
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