PI swap
12-25-2006, 05:29 AM
#2
3rd Gear Member
Join Date: Oct 2005
Location: San Marcos, TX
Posts: 916
RE: PI swap
please use the search feature, this is asked more than once a day. Perhaps we should make a sticky? the difference is in the heads, the 99+ flow better, therefore producing more power. Thats why the 99 gt's are rated around 35 rwhp more.
12-25-2006, 02:51 PM
#4
5th Gear Member
Join Date: Apr 2005
Location: South Jersey
Posts: 2,489
RE: PI swap
ORIGINAL: jmmorgan82
please use the search feature, this is asked more than once a day. Perhaps we should make a sticky? the difference is in the heads, the 99+ flow better, therefore producing more power. Thats why the 99 gt's are rated around 35 rwhp more.
please use the search feature, this is asked more than once a day. Perhaps we should make a sticky? the difference is in the heads, the 99+ flow better, therefore producing more power. Thats why the 99 gt's are rated around 35 rwhp more.
Put some PI heads on and then put the NPI Intake and NPI cams back on and see if you gain any HP...i doubt you will. The Power mainly comes from the PI Intake and PI cams in the swap...upwards of 30rwhp...you'll then get another 5-10 hp from the compression bump with the heads on NPI cams...The PI heads are a better design stock vs stock since they have bigger valves and allow more lift but thats not where the power comes from in the PI swap
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