475HP to the wheels

Discussion in 'The BS Topic' started by jeff swisher, Jan 16, 2020.

  1. jeff swisher

    jeff swisher Veteran Member

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    I was at Abel racing the other day and they had an El Camino on the dyno and it was a 434" SBC with AFR 210 heads on it ..I do not know the cam the intake was a tall single plane and I do not know if it was FI or carbed.
    But it put down 475 HP to the wheels and no nitrous on that run.

    Then a friend had his 2016 base corvette there which made just under 400 to the wheels stock.
    He stuck a small supercharger on it and was making 6.8 psi of boost last i seen was 475HP to the wheels on it and still tuning as I left.

    He is expecting 500.. And wants to run 11.50's in the 1/4.
    Must take a lot of HP at the wheels on these new cars to go 11.50's.
    Hope he makes it.
     
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  2. muscl car

    muscl car Veteran Member Lifetime Gold Member

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    Sounds like a Shafiroff racing Ultra Street 595 hp 434sbc
     
  3. bfmgoalie

    bfmgoalie Veteran Member

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    I know of a Shafiroff BBC with a Procharger - 1251 HP. Has to run racing fuel. Still in the resto shop. Can't wait to see it on the streets.
     
  4. 1980RS

    1980RS Veteran Member

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    My 358 pump gas engine put down 378hp and 478tq. at the rear wheels in the Camaro, car ran mid to high 11's so if he has a good converter and slicks mid 11's shouldn't be a problem.
     
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  5. badazz81z28

    badazz81z28 Veteran Member

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    The newer cars are heavy compared to your stripped down muscle car. My 70 is only 3100lbs. A new camaro can weigh as much as 4100lbs!!

    I have seen basically stock Z06s run into the mid 11s on street tires. That’s about 465hp to the tired. The new LT4 models are in the 10s. That’s about 550hp to the tires.
     
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  6. jeff swisher

    jeff swisher Veteran Member

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    He the guy with the Vette has a race against his friend with a dual turbo Maserati that has been lightly tuned and tweaked.
    I told him I will get my 47 dodge truck running and will race either of them and I can still pull a trailer.
    He told that it would make him very sad if my old truck beat him.

    He does have a 57 chevy car that is not stock..I may be working on that one day.
     
  7. 1980RS

    1980RS Veteran Member

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    New Camaro's are like racing my old '68 Caprice. Back then we did not have the abundance of HP to make car go super fast at the track and the lighter cars won out.
     
  8. G72Zed

    G72Zed Veteran Member

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    Wow, I wish my 72 Z28 was 3,100lbs!! it came it at 3,550 with a full tank of gas, and 3,750lbs with me in it. Porky thing and all steel.

    I've seen the 2012/13 Vette's go mid to high 11's street trim, they came it around 3,350- 3,400lbs at the line, and the 505hp on the side is correct as they hit 124-126 mph.....bang on with my 30 yr old slide rule LOL. There weight/MPH should produce a 10.65, but it's not a drag setup.
     
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  9. badazz81z28

    badazz81z28 Veteran Member

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    Oh yes, the benefit of the early cars not having any of the crash bracing, aluminum incorporated in everything! I also don’t have a back seat.
     
  10. G72Zed

    G72Zed Veteran Member

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    I also put down 475hp to the wheels in my 3,750# Camaro. But I never been on a wheel dyno, only an engine dyno, many many times.

    I made 535HP on the engine dyno, put it in the car, and went straight to the track. I take 60hp off the "dyno" chart, and plot it on my 30yr old "pre google" Moroso slide rule with my weight...I know what MPH I should run. And yep, ran 118mph in 3rd gear, but my ET sucked lol...It's not set up for that, but that's ok, I bought slicks anyway to get the ET down a bit.

    Unless something is really odd, or way off spec. with the combo, the "weight vs MPH" is a true indicator of the HP your making.

    As the old saying goes, four things that do not lie "An Engine dyno, 1/4 mile MPH, drunk people & yoga pants"
     

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