LockedBuild up of small block 350

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snorkenlawed
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2004/02/02 19:48:00 (permalink)

Build up of small block 350

Well guys I have been eyeing my grandads ole 72 short wheel base chevy pickup for a long time. He has just restored it. The other thing that caught my eye was the 350 block out of a 95 chevy pickup. I am thinking I take that block and bore it .40 over, Comp 270H magnum cam, vortec heads with edelbrock performer air gap intake with a 650cfm carb with some hooker headers. I think this would be a bad little truck how much horsepower do you think I would be making.
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    hydewildman
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    Re: Build up of small block 350 2004/02/02 20:01:00 (permalink)
    its really kinda hard to say? depends if ya build er right? what kind of carb ya got? i would say something around 400 maybe? not sure
    #2
    snorkenlawed
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    Re: Build up of small block 350 2004/02/02 20:08:00 (permalink)
    Edelbrock Thunder 650cfm manual choke.
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    badhonda2wd
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    Re: Build up of small block 350 2004/02/03 10:43:00 (permalink)
    I would say closer to 300hp. My buddy has a pretty well built 4-bolt main 350 in his s-10 thats only putting out 300hp (according to desktop dyno, but who knows in real life).
    #4
    zookyridr
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    Re: Build up of small block 350 2004/02/04 00:41:00 (permalink)
    Go with a comp hydraulic roller cam that matches the vortec heads and you should be able to pull down 400hp. The vortec heads are better out of the box than any of the older GM heads. Watch your compression though. Vortecs have small chambers.
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    Blaszilla
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    Re: Build up of small block 350 2004/02/04 00:58:00 (permalink)
    300-325 HP and plenty of torque to move that heave truck. Probably Run in the low 14's with a sticky set of radials and some weight transfer.

    It is nice to see You thinking of matching components liek that rather than the Bigger is better attitude.

    Would be reliable parts/quad hauler and cheap too.

    I like the Roller cam idea, but MONEY is a issue for most of us with our toys and that Hydraulic flat tappet is a fine match for a truck.

    Blas
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    snorkenlawed
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    Re: Build up of small block 350 2004/02/03 13:45:00 (permalink)
    Yeah its gonna be the quad hauler and hopefully a car show once in a while I wonder if I could lay some nice marks with the stock tires.
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    mr_rutcutter
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    Re: Build up of small block 350 2004/02/04 09:40:00 (permalink)
    Watch the lift on those vortec heads.The book say .450 max but some say you can go .480 if you dont mind taking a chance on bottoming out the springs.Also go with a dual pattern cam the vortec's dont flow that well on the exhaust side and need a little help. But the intake flow and combustion chambers are nice.I built a 350 for a mud race/ weekend play toy with the vortecs and a comp cam "cant rember the grind" and it does well.Be shure to get a new style intake to get the correct bolt pattern to match the heads.If I remember rite the vortecs have a 62-64cc chamber so a d-dish piston will put you around 9.6:1 comp. and a flat top will get you around 10.7-11.2 to 1.depending.
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    snorkenlawed
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    Re: Build up of small block 350 2004/02/05 19:10:00 (permalink)
    Well guys have found a different motor that I might put into the 72. My buddy has a truck they have had for a while and recently caught fire but the engine is still good 427 Chevy. Will this fit right in there and bolt up to a 350 tranny.
    #9
    probus1969
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    Re: Build up of small block 350 2004/02/07 11:15:00 (permalink)
    yes it will. it is not by chance a dump truck or something is it? if it is a bigger truck like that then it is a tall block and they are not good for hot roding. they are work horses but they have a very long stroke and it takes them a while to get going. if you let me know what the number is on the back of the block behind the driver side head i will tell you what it is so you can be sure, or maybe you already know.
    #10
    BloodyBear
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    Re: Build up of small block 350 2004/02/07 11:37:00 (permalink)
    quote:
    Originally posted by snorkenlawed:
    and bore it .40 over

    Why did you say bore it .40 over? Is it already .30 over? Most people think boring it is going to give you more power. It does but I dont think its worth boring the block to gain the few extra ponnies for. If its in a drag car its different, but not in a DD.
    #11
    snorkenlawed
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    Re: Build up of small block 350 2004/02/08 20:21:00 (permalink)
    Yep its out of a old flat bed Chevy used for hauling hay. It would be a good offroad motor to throw in something.
    #12
    mudslanger
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    Re: Build up of small block 350 2004/02/09 08:17:00 (permalink)
    Sounds like a tall block. They are work horses, but you can't turn them at high rpm's.
    #13
    honda377
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    Re: Build up of small block 350 2004/02/09 19:48:00 (permalink)
    vortec heads and cam isnt going to give 400 hp , getting 400 hp out of a 350 is more of a job than most think , i love going to the mud bogs and hearing all the guys say hey that truck has 700 hp but when it hits the thick mud it stops lol , go to paceparts.com and look at the specs of the gm performance moters , that will give you some ideas , the gm 383 with roller cam and vortec heads is only rated at 330 hp and thats a far cry away from 400 , i just wish it was that easy to get 400 ponyies
    #14
    mudslanger
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    Re: Build up of small block 350 2004/02/09 20:10:00 (permalink)
    I agree with you. I have a sbc 400 in my 4x4. It has .030 flat top pistons, brodix heads ported & polished w/205 valves. torker-2 intake with 650 holley dbl pumper. It only makes a little over 400hp off the bottle. Don't know what it does on it with 150hp Top Gun Nitrous. The cheepist Hp for the money.
    #15
    snorkenlawed
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    Re: Build up of small block 350 2004/03/07 13:42:44 (permalink)
    Ok guys I decided to not build it myself. Instead I am gonna buy a crate motor. This will not take place for a while, but im curious on what to get. I would love to have a 502, but im not sure about the price and I don't really need that much torque. So I am thinking about a the ZZ4 350 or the ZZ4 454 what do yall think. I just want something to beat those annoying civics with there stickers and all.
    #16
    mr_rutcutter
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    Re: Build up of small block 350 2004/03/09 01:35:31 (permalink)
    If you want to go fast check out www.worldcastings.com
    Look under crate engines, 427 small block.
    #17
    Blaszilla
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    Re: Build up of small block 350 2004/03/09 08:47:42 (permalink)
    The HO 350 from GM is a perfect match for your original idea and puts out 330 hp. IT is cheaper than the zz motors by far because you don't "NEED" Aluminum heads and it comes complete with carb and distributer all new units.

    A lot of the wrench twisting is taken out of the equation and you get a warranty too!

    Personally, I am going with a carcraft combo I fell in love with. It includes a HO 454 crate motor, a Vortech Supercharger, Carb Enclosure, 850 Demon Carb... 8 pounds of boost... 750 HP on 92 octane. Doing this with a full drivetrain upgrade will set me back only 10k. It'll be going into my 86 Monte Carlo SS.

    Gaaa You got my fever going again.

    Blas
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