434'' sbm. hp & torq?
#1348293
12/09/12 10:09 AM
12/09/12 10:09 AM
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Joined: Aug 2011
Posts: 250
Saskatchewan (SK)
79410aspenrt
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enthusiast
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OP
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Posts: 250
Saskatchewan (SK)
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4.125 K1 crank
Carrillo rods
Diamond pistons, 13.1 compression
709 lift intake, 687 lift exhaust custom grind soild roller, 108 l/c
277/288 @ .050
w2 heads, 289 cfm @ 700 lift
tunnel ram with 2-750 holleys
comes out to 434''
any guesses on the hp and torque
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Re: 434'' sbm. hp & torq?
[Re: 79410aspenrt]
#1348294
12/09/12 10:45 AM
12/09/12 10:45 AM
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Joined: Apr 2007
Posts: 2,026
Trumbull,CT.
jim sciortino
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top fuel
Joined: Apr 2007
Posts: 2,026
Trumbull,CT.
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If the engine isn't built, send those heads out for some major work.
That's alot of cubes to feed with that port, causing it to peak very early.
Last edited by jim sciortino; 12/09/12 02:01 PM.
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Re: 434'' sbm. hp & torq?
[Re: 79410aspenrt]
#1348295
12/09/12 02:39 PM
12/09/12 02:39 PM
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Joined: Jan 2003
Posts: 5,484
SoCal
Brian Hafliger
master
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master
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Posts: 5,484
SoCal
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Quote:
4.125 K1 crank
Carrillo rods
Diamond pistons, 13.1 compression
709 lift intake, 687 lift exhaust custom grind soild roller, 108 l/c
277/288 @ .050
w2 heads, 289 cfm @ 700 lift
tunnel ram with 2-750 holleys
comes out to 434''
any guesses on the hp and torque
Just built an Indy headed 427 sb a couple of months ago, Indy 230 heads I ported on a bit, Indy intake converted to 4500, 1050, 14:1, cam was 272-278@ .050 and .765-.710 gross lift.
It was 4.125 stroke, 4.060 bore and used TTI 1 7/8 x 3.5" headers...it made 726HP at 7000rpm and 590's TQ. Martin owns it, he's a member here. I think his handle is w2 stroker?
Anyway, this build could have used better heads and headers, larger carb and more camshaft for a more serious effort but having said that....it was a bracket engine that needed to make more than 700HP so that's where it ended up.
Personally the Indy heads need the short turn revised to allow a different S/T shape...until then they will never live up to their potential.
I'd guess your build will be somewhere around 620-640.
Brian Hafliger
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Re: 434'' sbm. hp & torq?
[Re: Streetwize]
#1348299
12/09/12 04:34 PM
12/09/12 04:34 PM
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Joined: Feb 2011
Posts: 4,302
Nebraska
72Swinger
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master
Joined: Feb 2011
Posts: 4,302
Nebraska
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Id like to know what power could be made in an endurance application with say a .630-.660 lift roller and w8s or 9s.
Mopar to the bone!!!
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Re: 434'' sbm. hp & torq?
[Re: 79410aspenrt]
#1348301
12/09/12 08:41 PM
12/09/12 08:41 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
Thats not much head work for those cubes... myself
I think you'll be lucky to break 600hp
i really hope you are wrong on this guess.
these w2's made 560 hp with 362''. smaller roller cam (638 lift)and less carburation (2-650's)
I've been wrong PLENTY of times... good luck with it
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Re: 434'' sbm. hp & torq?
[Re: emarine01]
#1348303
12/09/12 10:04 PM
12/09/12 10:04 PM
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Joined: Aug 2011
Posts: 250
Saskatchewan (SK)
79410aspenrt
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Saskatchewan (SK)
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It will be on the dyno when finished.
We ran several computer programs with these parts and both spit out similar #'s.
640-660 hp and 585-600 ft lbs. I don't think 660 hp is realistic but between 630-640 hp is more realistic.
Time will tell as it is just #'s, the strip is where it counts.
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Re: 434'' sbm. hp & torq?
[Re: jim sciortino]
#1348305
12/09/12 10:44 PM
12/09/12 10:44 PM
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Joined: Aug 2011
Posts: 250
Saskatchewan (SK)
79410aspenrt
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Saskatchewan (SK)
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I think the computer program said 6800-6900 rpm peak power.
I know a set of Indy 360-1 would be a better choice for 434" but I have to use what I got.
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