Small block impeller size and rpm
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Small block impeller size and rpm

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    Member McIntyreBahner's Avatar
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    Default Small block impeller size and rpm

    If you are running a small block i was wondering what size impeller are you running and at what rpm? I put a 421 ci sbc in my Daytona and would like to see what combinations others have tried. Thanks.

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    Senior Member Futs's Avatar
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    Where does the engine make peak power? That is the key to knowing what to run.

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    Member McIntyreBahner's Avatar
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    Default Peak power

    Quote Originally Posted by Futs View Post
    Where does the engine make peak power? That is the key to knowing what to run.
    I have never had it on a dyno. In the jeep it would pull hard to about 6800 before you could feel it lay over.

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    Senior Member jyeager's Avatar
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    Quote Originally Posted by McIntyreBahner View Post
    If you are running a small block i was wondering what size impeller are you running and at what rpm? I put a 421 ci sbc in my Daytona and would like to see what combinations others have tried. Thanks.
    Yeah buddy! I want to see you saw off adam with that deal!
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    Just found out that my blade is an A- cut and my 350 with 671 blower is spinning it to 5400rpm. Prior to fitting the blown motor a healthy 350 nothin fancy just flat tops and a good cam was spinning the same blade to 4200rpm.
    Last edited by Huffa; 02-12-2014 at 12:56 AM.

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    Spooling Sideways S13's Avatar
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    Im running an aggressor bronze B impellor with my 5.3L LS motor. Runs 4600rpm at 65mph with new wear ring and new 9 vane bowl. Estimated 375hp.

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    Senior Member jetboatperformance's Avatar
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    Ran a C minus in our SBC (zz4 & 2nd motors) 16' Allusion Tunnel, turned it just under 6K.. 80/85 mph


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    Member McIntyreBahner's Avatar
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    I ran this motor in my Bahner with a bronze B. It spun 5600 @ 87 mph. I now have a SS BC impeller in the Daytona. Wanting to find a combo to spin it at least 6500.

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    Senior Member HBInHeat's Avatar
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    Quote Originally Posted by jyeager View Post
    Yeah buddy! I want to see you saw off adam with that deal!
    Only thing ur guna be seeing is both of our transums jake.

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    Senior Member HBInHeat's Avatar
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    Quote Originally Posted by McIntyreBahner View Post
    I ran this motor in my Bahner with a bronze B. It spun 5600 @ 87 mph. I now have a SS BC impeller in the Daytona. Wanting to find a combo to spin it at least 6500.
    Ur launch will suck but a c- is in ur future Jeff

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    Senior Member Futs's Avatar
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    Quote Originally Posted by HBInHeat View Post
    Only thing ur guna be seeing is both of our transums jake.
    Ouch.


    At least his has been running for the last two years.

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    I have a Legend "C" you can try out if ya want.

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    Senior Member jyeager's Avatar
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    Quote Originally Posted by Futs View Post
    Quote Originally Posted by HBInHeat View Post
    Only thing ur guna be seeing is both of our transums jake.
    Ouch.


    At least his has been running for the last two years.
    Exactly, we will see if it will even come out to play this summer.
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    Senior Member 67weiman's Avatar
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    I run a 377 sbc spinning a detailed SS B- , inducer and stuffer to 5500 on the motor. Low 80's.

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