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How Much Nitrous Can A 305 Chevy Take Before Things Go Bad? Engine Masters Finds Out!

How Much Nitrous Can A 305 Chevy Take Before Things Go Bad? Engine Masters Finds Out!

The 305 Chevrolet V8…it’s not the Rodney Dangerfield of small-block Chevrolets (that honor goes to the 307) but it still has a big issue with reputation. Mostly because it’s synonymous with “smog motor”. Practically every rear-wheel-driven GM anything made between the late 1970s and the early 2000s stood a chance of this motor being shoved underhood, usually in dingy black with a myriad of vacuum hoses strewn about and affixed with a horsepower figure that was worthy of sad laughter. That being said, I like the little bastard child for two reasons: the 1987 Monte Carlo SS I had with the L69 “H.O.” mill and the 1973 Chevelle I owned that had a seriously worked over late 1970s era 305 that acted like more like a 383 stroker than it did a smogger lump. They have potential, and by far one of the easiest methods to getting strong performance out of the five-liter Chevy nobody really wants to remember is with the blue bottle of happiness. That’s right, nitrous!

Now, off the bat, you can see that this isn’t a stock smogger lump of a 305. Ran naturally aspirated, it’s cranking out 358 horsepower in the far end of the rev range, and 323 ft/lbs of torque down low. That’s a pretty badass 305 and would make a third-gen Camaro or G-body wake right up. But the plan is that to force-feed this mill as much nitrous as it can tolerate before the engine calls it a day and dies. Take your guesses on how much power it’ll make, and how much squeeze it can take!

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5 thoughts on “How Much Nitrous Can A 305 Chevy Take Before Things Go Bad? Engine Masters Finds Out!

  1. Chevy Hatin' Mad Geordie

    I’d like to see how much nitrous this chevy-lover could take when I iammed that bottle where the sun don’t shine. When I lit the fuse that I cunningly attached to it from a safe distance he’d probably go into orbit…

    Still it is a hunka Chevy shit he’s destroying..

  2. jay bree

    The clowns at hotrod seem to have devo-ed into “watch me break this stuff for clicks” journalism.

    Not buy it, not interested not going to click.

    It’s not car stuff.

  3. elkyguy

    i disagree,jay—i think it shows ,in a rather graphic way,just what happens when you don’t do things properly—you can tell people til you’re blue in the face not to do something a certain way,and they’ll do it anyway,but if you show them?—-and i’m a little impressed on how much the 305 made base-line,too

  4. Brash

    I’ll admit to wondering how much nitrous I can shove into the engine I’m building before it fails spectactularly.
    This episode goes some way toward answering that question for me.

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