318 to 440 conversion check list help
Thread Starter
Mopar Fanatic
Joined: Oct 2008
Posts: 221
Likes: 1
From: Northern New Jersey
Here she is. 440 bored.30 over with 9.5 compression. Eddy RPM Performer Heads,Intake and Eddy carb. Crane cam slightly larger than stock. I was able to use original crank, piston rods, lifters, water pump housing. Also got some pld school Cal custom valve covers...
Last edited by 68 Sat; Sep 25, 2009 at 02:17 PM.
New Member
Joined: May 2021
Posts: 1
Likes: 0
73 Charger SB to Bb
About to convert my 318 to 440. I am trying to create more of a street performer than a 1/4 mile car. A few questions about what I need to do while everything is ripped out. I would rather do some things once than regret not doing themwhile everything is apart.
- What is the weight difference between a 318 and 440?
- Do I need to change out the torsion bars? I've heard from guys much more knowledgable than I that it is not necessary.
- Do I have to change the rear leaf springs? All research states an extra leaf with the BB cars. Again I've been told it is not needed.
- Are the schumacker motor mounts sufficiant and strong enough for the big block, or should I just get the BB K member?
- Do I need to weld in frame stabilizers? Pros and Cons
- I was told not to believe the hype about the drum to disc conversion. Any thoughts.Bigger engine = bigger brakes
- Is the radiator change mandatory? My 22 inch radiator is brand new.
- Going from a 904 to a 727. Will it bolt right in? I know about the drive shaft length change.
- I believe my rear is an 8 1/4. Do I need the 8 3/4. My gears seem fine for what I plan on doing with the car.
- Finally the 440 is really fresh (less than 10k miles). Should I perform any mandatory modifications while it is outside the car?
Super Moderator
Joined: Mar 2015
Posts: 5,467
Likes: 548
Thread
Thread Starter
Forum
Replies
Last Post
