96-98 weak heads
07-17-2006, 03:07 AM
#11
5th Gear Member
Join Date: Oct 2004
Location: Orlando, Fl.
Posts: 2,538
RE: 96-98 weak heads
ORIGINAL: monkeydude3
they aren't weak, they are just badly flowing.
they aren't weak, they are just badly flowing.
ported NPI Heads > PI heads. You won't get any serious power gains out of your NPI motor without changing/porting the heads without a power adder.
07-17-2006, 08:03 PM
#12
5th Gear Member
Join Date: Apr 2005
Location: South Jersey
Posts: 2,489
RE: 96-98 weak heads
The heads on 96-98 4.6's aren't as bad as everyone thought. The major power increase from the PI swap comes from the PI Intake, PI Cams and Compression bump...Just swapping the PI Intake/PI Cams onto NPI heads has been shown to gain up to 35rwhp. This option works well for those who still want to supercharge later and not have to deal with 10.3 to 1 comp.
Thread
Thread Starter
Forum
Replies
Last Post