The stock 289 bottom end with ARP fasteners is good to 7000 RPM. With stock bolts I would easily take it to 5500. They are a strong engine - drive it!
safe shift point on modified 289?
i have a c code 289 with rebuilt but stock bottom end. it has a stock cam with a 570 street avenger, torker 289 intake, stock rear end, afr 165 aluminum heads, and free flowing exhaust. i want to rev it past 4 thousand with my new 5 speed but i just dont know if it is safe to go above 4 thousand on a stock bottom end. thanks for any help!
1 - 1 of 6 Posts
1 - 1 of 6 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Ford Mustang Forum
A forum community dedicated to Ford Mustang owners and enthusiasts. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
Top Contributors this Month
View All
Cobrajet67
275 Replies
Forddenial
86 Replies
ONEZ ST
67 Replies
Recommended Communities
