Mercury Cougar Owners banner

1 - 3 of 3 Posts

·
Registered
Joined
·
133 Posts
Discussion Starter #1
Have a 87 truck 5.0 roller block. 70 302 heads with bigger valves and roller rockers. Don't know the cam specs or the valve size. TBI Holley Pro-jection 670 CFM. Mallory Unilite distributor. Any suggestions on the plugs to use? Got some new 289 plugs in the basement.
 

·
Registered
Joined
·
11,950 Posts
Just use those - you can go a bit larger on the gap .46-.50 range.
 

·
Registered
Joined
·
133 Posts
Discussion Starter #3
Thank you. Happy motoring.
 
1 - 3 of 3 Posts
Top