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corvette 327 with 400 horses or 350??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by wheelin247, Jul 30, 2001.

  1. wheelin247

    wheelin247 1/2 ton status

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    i have a chance to get a corvette 327 with 400 horspower or i can buy a brand new crate 350 and change my gears to 4:88's?what would be the better way to go i need your help?
     
  2. Storm Trooper

    Storm Trooper 1/2 ton status GMOTM Winner

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    Sorry but I think we could all use some more imfo.
    Is the 327 old, how old and what has been done to it.
    Do you run a carb or TBI.
    What do you want to do with the truck??
    Just a note, some 327's had a press on harmonic balancer without a bolt. It's a bitch when it flys off. I had a 327 in one of my Chevelles. It was balanced, TRW 11.25 to 1, 4 duces (2 barrels) and much more. They are nice motors and I never had any problems but I built it. New is nice though and Chevy puts out a good product.

    [​IMG]<font color=red>[/b]"Rid'in HigH in my K5"[​IMG]
    ....[​IMG]<font color=blue>[/b]"6" Lift -<font color=purple>38.5's"[​IMG]....
     
  3. Andreas

    Andreas 1/2 ton status

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    Those 400 horses are probably at 6000 rpms, or so. That´s the key. What powerband, so to speak. You can spend a fortune on a smallblock and end up with 700 hp at 7500 rpms, but how useful is that gonna be in a Blazer?[​IMG]

    /Andreas

    406cui of pure sh*t[​IMG]
     
  4. wheelin247

    wheelin247 1/2 ton status

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    the 350 ill be runnin edelbrock intake and 600 cfm carb and hooker super comp headers with flowmaster exaust and the 327 i dont know much about ti besides its got 400 horspower im gonna be useing the truck for off road so i dont really know if that engine will be good for it or should i just get the 350 and put like 4:88 gears in it ....i just want the power becuase im gonna be running 38's soon and i dunno if the 350 will have enought get up with the 38's but ill have 4:88's in it so ....that will help also . thanks for the help do u have anymore advice?
     
  5. Twiz

    Twiz 1/2 ton status

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    use the 350. A 350 has a longer stroke (3.48 vs 3.25). Longer strokes will generaly produce better low end power (torque) and thats what is needed in a truck/off road.

    327s like to rev! It would have less low-end power, but really come alive on the upper end- perfect for a sports car kinda thing.

    (psst, Sell me the 327. I have 67 camaro that needs a 327 in a big way!)

    Twiztid
     
  6. Wheels

    Wheels 1/2 ton status

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    The 327 will have just as much trouble turning the tires as the 350. Do some planning now. Get the right gearing for the tire combo. More than likely, the 327 starts to build it's power band at about 3500 to 4500 rpm's. Don't know about you but I rarely go above 2500 when I'm out in 4 low or 2200 in 4 hi. The laws of physics will give a slight edge to the longer stroke (rotating mass) on the torque curve. I'd go with the 350 and look at Comp Cams for a grind to fit your power band. My .05.
     
  7. Gold Rush

    Gold Rush 1/2 ton status

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    Well as some of the others have said, depends on what you want to do and what final gear ratio you have. I run a 65 corvette 327 that put out 400 HP on the dyno. That was great when I was mud draggin with a 2800 RPM stall converter, 4.10 gears and 33" tires. Now I'm into rock crawlin and it really takes some finess to get over large obstacles. That engine cost me over $6,000 to build in 1994 and I've put on around 27,000 miles on it since then. At the prices now a days I could have bought one heck of a crate motor.



    David 75K5

    <a target="_blank" href=http://www.extremeblazer.com>http://www.extremeblazer.com</a>


    [image]http://www.extremeblazer.com/sideapproachL.jpg[/image]
     

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