330 head size and piston
#1
Gold Member
![](https://www.offshoreonly.com/forums/images/icons/gold_member_star.gif)
Thread Starter
Join Date: Nov 2003
Location: Springfield, MO/ Table Rock Lake
Posts: 37
Likes: 0
Received 1 Like
on
1 Post
![Default](/forums/images/icons/icon1.gif)
Gentlemen, I need an education in stock 454 heads and compression ratios.
What does a standard 330 454 have in terms of c/r?(this is a 1982 model)
Also, what type of piston comes in this standard 330 domed, flat?
I am currently rebuilding a 330 454 and would like to have about 8.75 c/r.
I have the open chamber big oval port heads (I think 118 cc). should I go with a domed or flat piston?
Every thing I have read shows the 7.4 mpi (310 hp) to have 8.7 c/r or so but I dont know what type of pistons are used in this application. In addition the 454 mag is said to have only 8.6 c/r again with what piston?
I would appreciate any help.
What does a standard 330 454 have in terms of c/r?(this is a 1982 model)
Also, what type of piston comes in this standard 330 domed, flat?
I am currently rebuilding a 330 454 and would like to have about 8.75 c/r.
I have the open chamber big oval port heads (I think 118 cc). should I go with a domed or flat piston?
Every thing I have read shows the 7.4 mpi (310 hp) to have 8.7 c/r or so but I dont know what type of pistons are used in this application. In addition the 454 mag is said to have only 8.6 c/r again with what piston?
I would appreciate any help.
#2
Charter Member #655
![](https://www.offshoreonly.com/forums/images/icons/charter_member_star.gif)
![Default](/forums/images/icons/icon1.gif)
Ron where are you? I have a set od 330 heads that are ready to run ....you can have them cheap!!!!
__________________
If your boat has a sail do you ride a horse to the ramp?
If your boat has a sail do you ride a horse to the ramp?
Thread
Thread Starter
Forum
Replies
Last Post
Chris288
General Boating Discussion
82
12-13-2003 04:37 PM