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Thread: Mighty Mouse or Killer Rat
          
   
   

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  1. #1
    1970chevstepper is offline CHR Junior sMember Visit my Photo Gallery
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    Apr 2013
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    Blind Bay
    Car Year, Make, Model: 70 chevy stepside pick-up
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    Mighty Mouse or Killer Rat

     



    I've recently bought a 1970 chev stepside Pickup and I want to upgrade the drive train it's got the stock 307 I'm torn between a 383 stroked and a 427 big block any input

  2. #2
    rspears's Avatar
    rspears is offline CHR Member/Contributor Visit my Photo Gallery
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    Car Year, Make, Model: '33 HiBoy Coupe, '32 HiBoy Roadster
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    Quote Originally Posted by 1970chevstepper View Post
    I've recently bought a 1970 chev stepside Pickup and I want to upgrade the drive train it's got the stock 307 I'm torn between a 383 stroked and a 427 big block any input
    Hard to say. There are advantages to both, but you need to define your intended use for the truck. Are you building a truck to use & drive, or a truck to trailer and show? Highway driving for distances, or short local hauls? Welcome to CHR, by the way.
    Roger
    Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.

  3. #3
    deckofficer's Avatar
    deckofficer is offline CHR Member Visit my Photo Gallery
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    My 383 stroked sbc would have been perfect for your truck. Only produced 320 hp @ 4050 rpm but knocked out 516 lb/ft @ 2800. My current engine is a Dart block 427 sbc and for a heavy truck would not be too good. However a big block 427 would have more than enough torque at low rpm to get the weight of the truck going good AND would also have the high rpm zing factor.
    Bob
    427 sbc 526 HP 556 lb/ft
    Tremec TKO 600 5 speed
    1790 lbs.

  4. #4
    pat mccarthy's Avatar
    pat mccarthy is offline CHR Member/Contributor Visit my Photo Gallery
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    Quote Originally Posted by 1970chevstepper View Post
    I've recently bought a 1970 chev stepside Pickup and I want to upgrade the drive train it's got the stock 307 I'm torn between a 383 stroked and a 427 big block any input
    yep take the 3.756 crank out put a 4.250 or 4.375 in the427 block and get a 489to 510 .if a tall deck 10.200 deck bock throw a 4.500 crank in the block and get a 526to 541 and use a sbc for a starter

    doing many of them rats right now... i know thats easy one for me
    Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip

  5. #5
    offshore27's Avatar
    offshore27 is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: 1926 Ford Woodie Wagon
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    Big Block is way to go.I am putting a 454 in my car.
    Nothing has the WOW Factor more than Big Blocks and torque is fantastic.
    Last edited by offshore27; 04-30-2013 at 10:03 PM.

  6. #6
    Join Date
    Sep 2013
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    London
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    Highway driving for distances, or short local hauls.

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