Gen V 454 questions

Discussion in 'Engine Topic' started by RIP170, Sep 9, 2021.

  1. RIP170

    RIP170 New Member

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    Hello, I have a 78 camaro Lt, I have the opportunity to purchase a low mile 454 out of a 1990 454ss for cheap and i would switch this to a carb setup. I've been putting as much hours in of research as i can with limited info. I know i would need a electric fuel pump and a msd ignition. I really don't know any other roadblocks, does anyone have any opinions on going this route and if it's worth it?
     
  2. camarochevy1970

    camarochevy1970 Veteran Member

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    can make some decent power out of those with a few mods. In fact, I think Hot Rod took one to like 500 hp for not a lot of cash a few years ago.

    I know the Gen 6 didn't have a fuel pump boss, guessing same for Gen 5?
     
  3. RIP170

    RIP170 New Member

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    Yea Gen 5 didn't have them
     
  4. G72Zed

    G72Zed Veteran Member

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    I have a new GM Gen VI block I bought for a customer build, it has the mech. fuel pump provision, although he will be electric fuel pumps, nice to have the option regardless, simple and functional in under certain applications under 900hp.
     
  5. Rustbucket350

    Rustbucket350 Veteran Member

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    Well you would want a holley blue electric pump and a carbed intake. An edelbrock rpm style is a good all around choice.
     
  6. carhead22000

    carhead22000 oldblue

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    easy to make big power from any big block.i love them.depending on what you want and how far you want to go. I found a gen 4 like that,just replaced rings, bearings, did a cam swap.put a set of trick flow 280 ovals on,airgap intake,800 edelbrock.car works sum nice.4 speed car.
     
  7. RIP170

    RIP170 New Member

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    Carhead i think ive seen some of your car pics, i belive you're running a stock 80's z28 hood just slightly modified right?
     
  8. carhead22000

    carhead22000 oldblue

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    yes ,abit of love under hood.the solenoid is gone for the flaps. And a bit of trimming. I wanted car to look stock.
     
  9. sandlapper

    sandlapper Veteran Member

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    OP RIP170
    Why would you need (or want) an msd ignition? Your 78's OE Delco HEI dist should be more than adequate; and more reliable than any msd.
    If the 90 BBC has an OE roller cam, suggest retrofit 78's OE HEI with a new melonized dist gear ACDelco pn 10456413.
    That melonized gear's available at USA AutoZone about $45 USD.

    If it's truly 1990 OE 454SS truck; motor may be Mark IV
     
    Last edited: Sep 11, 2021
  10. RIP170

    RIP170 New Member

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    My idea with the motor so far is to swap the heads with gen VI vortec heads and comp cams 282 flat tappet, the cam setup was recommended by Richard Holdener

    Also i'm not 100 percent sure if it's a 1990 or 91 but i am sure it came from a 454 ss
     
    Last edited: Sep 13, 2021

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