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Kirkham Motorsports

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  #1 (permalink)  
Old 10-16-2007, 02:51 PM
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Default Anyone care to guess at the horsepower this one will put out?

My newest build is a 445ci Windsor stroker based on a Dart Sportsman block with a 4.155" bore and a 4.100" stroke. Scat forged crank, scat H-beam rods, and Probe pistons. Keith Craft is doing the block work for me.

The heads are TFS CNC Twisted Wedge R heads, which have been drop shipped to Joe Craine for massaging and flow testing. Out of the box, these heads are supposed to flow 330cfm @ .600", so I'm very confident they will work well on this application. They are 225cc heads with 2.08" intake valves and 1.60" exhaust valves.

The cam is a Comp custom hydraulic roller, with a 294/298 advertised duration, 166/169 duration at .200", and 244/248 duration at .050". Lift is .615"/.621".

The intake is an Edelbrock Super Victor intake.

Compression will be 10.7:1, with an 8.15:1 DCR.

The cam may be a little lacking for this size engine, but it's going in a heavier car than a Cobra and I want it to have plenty of low/mid range grunt.

I'm shooting for 600hp/600lb-ft....
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Old 10-16-2007, 03:09 PM
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I will guess:

580 HP
570 TQ
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Old 10-16-2007, 03:30 PM
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550Hp and 535 TQ

I'm staying to the low side on my guess. In any case, it sound like you will have one great engine.
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Old 10-17-2007, 02:08 PM
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No more than two opinions? Ah, c'mon guys.....
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Old 10-17-2007, 02:20 PM
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well James yales 427 small bock was 610hp soyou could go 640 easy if the engine flows like his did...WB3
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Old 10-17-2007, 02:21 PM
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Hey WB,

Any links to his build?
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Old 10-17-2007, 03:43 PM
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My old 408 was at 615 but with a much bigger cam than you have chosen. I would guess your at the 550+ range.

Don't need no big block.
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Old 10-17-2007, 03:45 PM
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What cam and heads were you running?
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Old 10-17-2007, 04:01 PM
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The cam was a special grind
Bullet 670 lift and 266-274 I-X @.050 solid roller
Made all it's power up high 6,600 but would not run on pump gas.
The heads were out of the box AFR 205's


I have since detuned and now am around 500HP
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Old 10-17-2007, 04:17 PM
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It's a small block, couldn't possibly break 300 horse max.

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Old 10-17-2007, 04:34 PM
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well gee wizz if were only 300 at max that musta made those big blocks we bsmacked at runngun less than 250hp
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Old 10-17-2007, 04:51 PM
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Blykins I dont know if James Yale had a build site for his Daytona or not but that engine your doing is going to be very stout ,I know james found a 100 hp just using the BB 4into 1 headrs instead of the quad pipes the Daytonas have it was all tested ther on Crafts Dynos.sounds like fun WB3
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Old 10-17-2007, 05:29 PM
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Quote:
Originally Posted by Terry Stapley
I will guess:

580 HP
570 TQ
I"m going to play my "The Price is Right" card and guess 581 HP/571 TQ.


Actually, given the displacement and components you mentioned I honestly think you have a really good chance of eclipsing the 600HP barrier.

-Dean
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Old 10-17-2007, 05:33 PM
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Quote:
Originally Posted by RedBarchetta
I"m going to play my "The Price is Right" card and guess 581 HP/571 TQ.


Actually, given the displacement and components you mentioned I honestly think you have a really good chance of eclipsing the 600HP barrier.

-Dean
If we're playing the Price is Right, then I guess $1!
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Old 10-17-2007, 06:16 PM
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The only thing I'm unsure about is the camshaft. I want to have a great deal of good manners on the street, but I don't want an RV either.

It's hard to find examples of setups like this one on the web...so I have nothing to compare against.

Probably the closest comparison I have is this one :

World 460 All-Aluminum Windsor

Now granted, it's 15ci larger than mine, but I think I may have the edge with my cylinder heads. This 460W also has a pretty stout cam....254/260 @ .050. That's kinda what makes me think I'm not choosing a large enough camshaft.

Thoughts?
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Old 10-21-2007, 12:30 AM
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i think about 595hp and tq 585
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