Let's hear some numbers!

Discussion in 'Race 400/430/455' started by 455stude, Mar 22, 2017.

  1. 455stude

    455stude Well-Known Member

    Ok, here goes. 0 deck, .040 head gasket, 12 1/2 to 1, stage 2 SE heads flowing 345/235, 308s cam, 464 cu. in. SP-1 intake, 1050 dominator, running on e-85. How much HP/tq are we looking at? Just curious what to expect out of the new motor.
     
  2. sriley531

    sriley531 Excommunicado

    Sounds stout!! I'll say 630/615
     
  3. GS Kubisch

    GS Kubisch THE "CUT-UP" BUICK

    That could approach, maybe even squeak over 700 if all is "right".
     
    J.Staged likes this.
  4. Thumper (aka greatscat)

    Thumper (aka greatscat) Well-Known Member

    I agree, I have a similar combo with a few more cubes and was at 715hp
    gary
     
  5. 455stude

    455stude Well-Known Member

    Adding a few bars to the cage, that's gonna be couple hundred extra HP thrown at my poor old studebaker. Don't want to twist it up in a knot. This is gonna be interesting with the altered wheelbase.
     
  6. Thumper (aka greatscat)

    Thumper (aka greatscat) Well-Known Member


    Love to see some videos at the track
    gary
     
  7. 455stude

    455stude Well-Known Member

    Already told my son he's gonna have to be there to photograph and video in case things go awry! Hope its not guardrail to guardrail like our oldest the first time he drove it on his seventeenth birthday.
     
  8. sriley531

    sriley531 Excommunicado

    Wow, I knew I was being a bit conservative, but I was way off based on guesses of those who know far more than me!!
     
  9. 455stude

    455stude Well-Known Member

    I'll be happier than a pig in poop if it makes 650. When I started this I was shooting for 575 or 600, then things kinda went crazy with people on this board and friends selling good parts at great prices. I kinda got outta hand. Like I said, this is gonna be interesting​. If this thing goes anywhere in the 10's I'll be very, very pleased.
     
  10. BrianTrick

    BrianTrick Brian Trick

    What do you have for crank,rods,pistons?
     
  11. Briz

    Briz Founders Club Member

    I wouldn't waste any money doing that build with a stock block. I'm learning that lesson the hard way.
     
  12. 455stude

    455stude Well-Known Member

    Sportsman rods, ta flat tops, halo girdle. If it makes peak HP at 30 degrees timing, I'm gonna retard it 3 or 4 degrees and let it live. Keep hearing rpm and detonation kills them, gonna try to keep both in check. Like I said, kinda went off the rails on the build, but I don't have to abuse the crap out of it. Gonna see what it runs with the 3.73's. Might even go to 3.55's to keep the rpm at a reasonable range. Heck I might put the exhaust back on it and go terrorize the cruise night crowd.
     
  13. BrianTrick

    BrianTrick Brian Trick

    If I build anything with aluminum rods,I do not zero-deck it. I leave it in the hole to give it room.I will zero-deck it with steel rods though.
     
  14. 455stude

    455stude Well-Known Member


    I never saw any more on the thread on your motor as to what was up. What was the final verdict? I know it's a crap shoot when you get up there with the power levels on these 455's. Some live, some don't. Guess I'm gonna find out. Hell, I gathered parts for this for 11 years. Last thing I want to see is it get hurt.
     
  15. BrunoD

    BrunoD Looking for Fast Eddie

    In '93 I had a similar combo,About same compression,but with steel heads and 308 solid cam.The car's weight was 3250 plus the driver,my son was 160 pd at that time.Its all the the North-east newsletter at the October issue of that year.The car went a best of 10.27 at English-Town race track,a week later we went to Atco raceway and we hit 10.22.Not bad for 24 years ago...By the way,the heads were ported by Gessler. And the car was street legal.Bruno.
     
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  16. 455stude

    455stude Well-Known Member

    It's steel rod.
     
  17. Bens99gtp

    Bens99gtp Well-Known Member

    I have a very similar bottom end, stk rods, 027 gasket but 30 in whole. 74 cc iron heads so about 1.5 less compression. Same cam, roller 1.65 rockers, my heads only flow in the 260/200 area. My 3850 car and drive weight goes mid 10.90s in great air, and 11.0s normally. I wad running an 1000 cfm 4150, sp1, and av gas. I figure by the the ets and trap speeds of 119 mph I am just under 600, so the extra 80+ cfm should be worth and easy 50 hp and the extra squeeze should be worth an extra 5 or 6% total over my set up before the extra cfm power so I would figure 660-675 pretty easy, maybe more for the corn fuel
     
  18. Briz

    Briz Founders Club Member

    Its back together and I plan on starting it for the first time in the car today. Not holding my breath on longevity. Run it until it breaks, hope the parts on top survive then rebuild bigger n better withs a Tomahawk block.
     
  19. Bluzilla

    Bluzilla a.k.a. "THE DOCTOR"

    I ran nearly the same set-up with the exception of 13.25:1 Arias Pistons, Crower 7.250 Billet Steel Rods, early version of the TE Heads, Main Girdle, (No Block Fill), and VP112 for "18 years" without a stitch of failure... (rod and main bearings looked like new when I took them out). As long as you have a competent shop that knows what to, and what not to do when machining and assembling a Buick block you will be fine at that level. My Skylark weighed close to 3800 pounds and ran consistent 10.50s with a full exhaust and nearly stock suspension, ..... in drive.

    You should be in for some fun!!!!!

    Larry
     
    Last edited: Apr 23, 2017
  20. gymracer01

    gymracer01 Well-Known Member

    I agree with you Larry, the machinist is the key. I've ran the same short block since 2005. Raced all over the eastern half of the country. And my block is not filled, and has no girdle. Other than some flat top pistons the short block is all stock.. rods and crank. About 90% of all racing has been on 1/4 mile tracks. Recently went 10.11 @ 130+. Also limited to an Edelbrock 800 carburetor.
     
    dan zepnick likes this.

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