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Run/Crank and Power/Train Relay Size ?

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Old 06-25-2012, 07:55 PM
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Default Run/Crank and Power/Train Relay Size ?

I am building my own fuse block for my l92 engine installation. Right now the relays I have on hand are 50amps each. Will 50 amps be enough to handle the Run/Crank? Will 50 amps be enough to handle the Power/Train relay? I am using a modified factory harness.
Old 06-26-2012, 12:10 AM
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Stock relays are rated ~30A, you're good to go.
Old 06-26-2012, 12:01 PM
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That is good news. Thank You for the reply. I might add for discuission that the N/O side is 50amps and the N/C side is less something like 30 amps. I will be using the N/O side.
Old 06-26-2012, 07:19 PM
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I think 50A would be enough. The stock relays are usually 30A, but I think GM used a couple of them for all the hot in run&start circuits.

Originally Posted by 71403
Stock relays are rated ~30A, you're good to go.



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