390 Redline???
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Laughing Gas
Joined: Aug 2004
Posts: 1,138
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From: Yuba City, Ca
390 Redline???
Does anybody know where the 390 redlines from the factory???? how about with stock heads, and a mild build??? Would it change any....? Thanks guys i'm just leanring about the FE engines so help me out here.... got the 400's down but these are a new game to play with.
I'm thinking about 5500 but not sure....
I'm thinking about 5500 but not sure....
Lead Driver
Joined: Apr 2001
Posts: 6,175
Likes: 21
From: Texas
5500 is a good number for a mostly stock 390. generally, they will run out of breath before then, depending on your carb/intake/head confiuration. As for the valve train, 5000-5500 is probably a good cut-off assuming it's in good shape.
Posting Guru
Joined: Oct 2005
Posts: 1,235
Likes: 2
i vote for 5000 on a bone stock setup... a cam and good springs will get you to 5500-5800... reliability starts becoming a factor in any motor when you push 6000 or more for very long with stock parts.. JMO
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Senior User
Joined: Feb 2009
Posts: 160
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Old thread but good to know. Guess I've been taking it easy with a 4100rpm pill in there, don't know that I want to go over 5000 but I'll do 4500 for now. Later.
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Joined: Feb 2009
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Not all stock but not a big build either. When I had it rebuilt years ago this is what I did. 390 w/ RV cam, 4 bbl Holley, Cobrajet intake, Thorley headers, Flowmasters, MSD box, stock heads, stock distri., not balanced. So little more than stock but that's it. Later.
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