Go Back  Offshoreonly.com > Technical > General Q & A
90 7.4L 330 hp questions > 90 7.4L 330 hp questions
Like Tree0Likes

90 7.4L 330 hp questions

Reply

Old 01-18-2006, 02:47 PM
  #11
VIP Member
VIP Member
 
Pat McPherson's Avatar
 
Join Date: Oct 2002
Location: Ivoryton, CT
My Boat: 1996 22' Donzi Classic, 1985 17' Aquasport CC
Posts: 5,241
Default Re: 90 7.4L 330 hp questions

Originally Posted by cloudmaster_321
Is the cam you used something that can be added without rebuilding with modified pistons/connecting rods. I wouldn't mind doing a cam on mine if i could keep the reliability.
Yes, I did not go crazy. The new cam was probably only worth 25-30HP over stock.
You should change the valve spring with a cam change.
And depending how much more lift, the heads may need to be machined for a different type valve seal.
__________________
Patrick
Pat McPherson is offline  
Reply With Quote
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Monty
General Q & A
7
09-30-2013 10:34 PM
dyno
General Boating Discussion
16
04-02-2003 07:17 PM
JimV
General Q & A
24
04-08-2002 11:18 AM
crmax
General Q & A
18
03-29-2002 08:44 AM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


OSO Sponsor
OSO Advertiser
OSO Advertiser
OSO Advertiser