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Thread: HORSEPOWER GUESSES ? 406 SBC

  1. #1

    HORSEPOWER GUESSES ? 406 SBC

    I HAVE A 406 SBC THAT I AM GETTING READY TO DROP IN.I HAVE DEBATED WHETHER TO TAKE IN FOR A STRAIGHT DYNO OR DYNO IN CHASSIS AND THE CHASSIS IS WHAT I HAVE CHOSEN. JUST WONDERING IF YOU GUYS COULD GIVE ME A GUESS.
    406 SBC STOCK BLOCK SPLAYED CAPS
    SCAT FORGED CRANK
    SCAT 6" RODS 7/16 BOLTS
    PROBE PISTONS 10.5-1 CP
    COMP SOLID ROLLER 254/258 .672 LIFT W/1.6 R 106 LSA 102 LCL
    BRODIX T-1 FULLY PORTED 7/16 STUDS W/GIRDLES
    VICTOR JR INTAKE GASKET MATCHED AND PORTED
    HOLLEY 4150 HP 1000CFM
    RUNNING ON 93 OCT
    GOING IN A 84 CUTLASS 3100 LBS 4.11 GEAR 5000 STALL

  2. #2
    Senior Member EXPERT BUILDER
    Join Date
    Nov 2008
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    263
    im guessing you should have about 650 give or take

  3. #3
    WHAT KIND OF TIMES DO YOU THINK A BUDDY OF MINE SAYS 11.30'S TH350 WITH A BRAKE HE ALSO SAYS 550 AT THE CRANK WOULD BE LUCKY THIS IS MY FIRST SBC ALWAYS HAD FORDS

  4. #4
    I think you have a solid 10sec. car. I built a similar combo in that it had a solid lift flat tappet cam and it ran 10:60s in a 3200lbs camaro with a powerglide and pump gas! It also had a nice set of ported track 1 brodix heads. It has been one of my favorite motors I have built. With that turbl 350 first gear, its going to rip the tires off if its tuned right. Make sure you have the fuel flow you need and about 36-38 degrees timing at 3000 rpm max!

    CC

  5. #5
    I AM RUNNING A BG 220 PUMP WITH-10 SUPPLY FROM CELL TO CARB TIMING IS 36 DEG I HOPE 10'S ARE DOABLE I HAVE SANK ALOT INTO MY REAR SUSPENSION. CONVERTD TO 9" ALL AFTERMARKET GOODS ADJUSTABLE UPPERS, SOLID LOWERS, ANTI ROLL BAR I HOPE IT HOOKS.I WAS ABLE TO SQUEEZE A 28x11.50 15 IN ON THE REAR SHOULD BE ENOUGH TIRE

  6. #6
    I just dynoed my 12:1 408 Ford with a 680 lift roller and AFR 205 cc heads and it made 580hp. Just to give you an idea. I would say your guess of 550 at the crank would be pretty close. It sounds like a nice piece. Good luck with it.

  7. #7
    Senior Member RACING JUNKIE
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    2,998
    I'll say 590ish HP range. 10.90 car
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
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  8. #8
    Senior Member SENIOR BUILDER chevynovaman's Avatar
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    my pump gas 383 went 11.80's with a 557 flat tappet cam, you should be in the tens easily with a brake,, your cam seems like it has alot of lift for the duration and lower compression.. I'll trade ya engines! lol
    1968 CAMARO 302 4 SPD IN THE ROUGH
    1957 CHEVY FUEL INJECTED LS1 4L60E BEAUTY
    1962 CHEVY II NOVA 496 LETS RACE

  9. #9
    Member CRAFTSMAN
    Join Date
    Mar 2005
    Location
    Washington state
    Posts
    61
    I am assuming this is a .030 over 400 block,..
    and the heads have 2.08/ 1.60 valves,..

    585HP @ 6500
    540TQ @ 5000

    What tranny you going to run ?? t-400


    Mid 10`s,....
    Smoldery Smokey Burnouts To You All

  10. #10
    Senior Member RACING JUNKIE
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    Quote Originally Posted by chevynovaman
    my pump gas 383 went 11.80's with a 557 flat tappet cam, you should be in the tens easily with a brake,, your cam seems like it has alot of lift for the duration and lower compression.. I'll trade ya engines! lol
    X2 on the cam, i think i would take the 1.6 rockers off and go with the 1.5's. Case in point, i have a .668/.660 @ 106 LS installed @ 102 in my 377" motor, in my friends 1800 lb dragster it ran 5.15 and 8.23 @ 158 on alcohol. Same motor in my 3250 Malibu, i could only run 6.52 and 10.59 @ 125, just not enough torque for the weight. I ran better with a .597 flat tappet cam 106 LS with a 406" same as your's except with 12.5 pistons with an 850 DP. Best 60' 1.39 with 14X32 GY's. I could be wrong, so maybe run the car first then try some 1.5 rockers to get the lift down.

    JMO

    Zip.


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