eagle cast steel 400 sbc crank
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From: lewisvilee NC
Car: 89 RS camaro
Engine: 454 swap in progress
Transmission: th400
Axle/Gears: 4.11
eagle cast steel 400 sbc crank
hey guys i was just wondering how much hp/torque/rpm cane a eagle cast steel 400 sbc take before breaking. just a estimated guess because i have a guy that will sell me a 400 block cheap but it doesnt have a crank. thanxs
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
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Re: eagle cast steel 400 sbc crank
I think those are rated at around 500HP, or around 6000RPM or something of that nature. It's a mid of the line piece IIRC.
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From: Baton Rouge, LA
Car: 89 RS
Engine: 305
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Re: eagle cast steel 400 sbc crank
Sonix is right. I have seen people pushing 600 with there 383 (same crank diffrent journal size). Eagle rates them at 500, they will take more but you never know how much and dont want to trash the rest of the motor finding out.
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From: lewisvilee NC
Car: 89 RS camaro
Engine: 454 swap in progress
Transmission: th400
Axle/Gears: 4.11
Re: eagle cast steel 400 sbc crank
awesome thats about the numbers i was hoping for, about 500hp would be just about as much as i would need. although they say too much horsepower is almost enough. 
thanxs guys
thanxs guys 
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From: Armpit state
Car: 71 Nova
Engine: Superramed 383, Topline heads
Transmission: 700r4
Axle/Gears: 8.2 posi 3.08
Re: eagle cast steel 400 sbc crank
I would worry more about the stock block splitting in two. Seems the way they always end up when extremes are pushed.
Last edited by shaggy56; Apr 23, 2007 at 10:47 PM.
Thread Starter
Member
Joined: Sep 2005
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From: lewisvilee NC
Car: 89 RS camaro
Engine: 454 swap in progress
Transmission: th400
Axle/Gears: 4.11
Re: eagle cast steel 400 sbc crank
so you are saying i should get an aftermarket 400 sbc block to get 500hp?
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From: Armpit state
Car: 71 Nova
Engine: Superramed 383, Topline heads
Transmission: 700r4
Axle/Gears: 8.2 posi 3.08
Re: eagle cast steel 400 sbc crank
Not a bad idea but you should be fine if you use quality fasteners on the mains. Im just saying the block will most likely go before the crank.
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From: Oviedo,Fl
Car: 91 camaro
Engine: 383
Transmission: th350
Axle/Gears: 4:10
Re: eagle cast steel 400 sbc crank
I would invest in some good rods to handle that amount of power, i think the stock block would be fine if its preped right and definitley use good fasteners. you should be fine.
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From: lewisvilee NC
Car: 89 RS camaro
Engine: 454 swap in progress
Transmission: th400
Axle/Gears: 4.11
Re: eagle cast steel 400 sbc crank
thanxs guys for the help and yes i plan to use good internals just a stock block so i was just a little worried about the crank. nothing is set in stone yet about the 400 so we shall see what happens.
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