I have 67 satellite with a 440 30 over 906 ported heads 509 cam msd ign m1 intake 800 Holley dp. Goes great. I have a 6000 chip in it now,Rev limiter goes off at 6000 very quickly. How high of a chip should i go.Don't want to hurt my baby. Thanks Paul
how sturdy is your bottom end built? valve springs? are you balanced?
Posted By: Mr.Yuck
Re: 440 - 07/25/12 09:03 PM
what are you shifting at? If you are shifting at 6k chip it to 6400. I shift at 64ish, I'm gonna go with a 68oo pill
Posted By: Dodgem
Re: 440 - 07/25/12 09:10 PM
best shifts with that cam and heads is 5800 to 6000 chip it at 6200 and aim for 5800 or go with the 6400 chip they soft limit 300 rpms early getting harder till the number.
The motor is balanced tha valve springs are 600 lift
What kind of rods and pistons? With so-so flowing stockish heads I would probably chip it to 6500 and shift at 6200. Like said already the limiter starts coming in before it's rated rpm so you want to go a bit higher.
Why do people insist on spinning way past the powerband????
The weak link in the 440 are the 3/8" rod bolts. They are the same as a 318 rod bolt (3/8"). If you rev the 440 over 6,200 RPMs, those heavy pistons really start to stress those 3/8" bolts. They will stretch, opening the rod bearing clearances and let the bearings spin over top each other (piggy back). Keep your RPMs below 6,200 and it will last a long time. Keep spinning it to 6,500 or over, you'll be buying parts real soon.
Posted By: 383man
Re: 440 - 07/26/12 04:17 AM
This brings back memories. I remember some years back my girl griend had a 340 Dart and wanted me to race it for her to see what it would run. Well my brother went with us and I let him drive it first. His first pass was 13.87 @ 104. Afert 4 passes he worked it down to a best of 13.54 @ 105. Now remember this was with street tires that would go up in smoke if not driven right. I jump in the car and made one pass....13.49 @ 105. Well my brother comes up to me kinda ticked off and says ......what did you shift at ?? I said I dont know as I never looked at the tach ! That ticks him off when I do that but it is the truth. I just shifted by the feel as when it felt to be about done in each gear I shift. That makes a good starting point for me and I can play around with shift RPM from there. But many times my seat of the pants was on the money.
Ron
Torque moves mass. Many times one just has to go to the track and try different rpm levels when shifting to find what makes the car quickest.
As explained to me years ago.......overrevving just cheats the next gear out of seeing some of the torque band it should.
440's are mid-range torque beasts!
thank you!! i didn't know how to say it nicely but really, if you only are making power up to 6000, what's the point of pushing it?? just to test your parts?
