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Search: Posts Made By: My427stang
Forum: Truck Forum   03-12-2013, 05:18 AM
Replies: 8
Views: 1,213
Posted By My427stang
Re: Re-stroked a 360 to a 390!

I agree, did you change valve springs? If not anything over 4500 rpm, expect an old FE to start floating soon

Not that it's related, but are you running headers? If not, it wont make any power...
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