7 or 5 heads?
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Joined: Dec 2014
Posts: 24
7 or 5 heads?
I am reading that 5 heads flow better compared to the rest of heads...
what is the truth? 7 heads have larger valves.
what head suit better the 403 application with a stock short block engine.
which head is better?
Nic
what is the truth? 7 heads have larger valves.
what head suit better the 403 application with a stock short block engine.
which head is better?
Nic
Registered User
Joined: Nov 2008
Posts: 8,485
From: Central Fl
Best head for a 403 is an aftermarket aluminum one.
Jmo
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