What`s the Difference

Badass_yellowGT · 06-25-2002, 01:28 PM

Hey all i`m new here

i have a question what is the differences that are used on the 99 model 4.6 to get it up to 260 horse from the 98 4.6 225 i have a 98 and if possible would like to get these parts to upgrade my engine

blackvert00 · 06-25-2002, 02:05 PM

99+ got a new set of heads. a lot of guy with 96-98 4.6L have swapped in 99+ head for the extra hp

blue00gt · 06-25-2002, 06:35 PM

99+ also have different intake and camshafts to go with the PI heads. I believe you actually end up with a little more hp than a 99+ when you do the swap because you end up with slightly higher compression. Do a search of previous posts - there are some folks on here who have done the swap and who know where to get the parts for the best price.

MIKESHAW · 06-26-2002, 09:52 AM

THE 99+ HEADS HAVE MORE AIR FLOW THAN THE 98 AND BELOW.

tireburner163 · 06-26-2002, 10:43 AM

Quote:

Originally posted by blue00gt
I believe you actually end up with a little more hp than a 99+ when you do the swap because you end up with slightly higher compression.

Slight??? Try 11:1

06-25-2002, 01:28 PM	#1
Badass_yellowGT Registered Member Join Date: Jun 2002 Location: Western,MA Posts: 254	What`s the Difference Hey all i`m new here i have a question what is the differences that are used on the 99 model 4.6 to get it up to 260 horse from the 98 4.6 225 i have a 98 and if possible would like to get these parts to upgrade my engine

06-25-2002, 02:05 PM	#2
blackvert00 Registered Member Join Date: Nov 2001 Location: southfield, MI Posts: 21	99+ got a new set of heads. a lot of guy with 96-98 4.6L have swapped in 99+ head for the extra hp __________________ 2000 Mustang GT Convertible K&N air filter brake calipers painted red

06-25-2002, 06:35 PM	#3
blue00gt Mustang Addict Join Date: Jan 2001 Location: McKinney, TX Posts: 1,294	99+ also have different intake and camshafts to go with the PI heads. I believe you actually end up with a little more hp than a 99+ when you do the swap because you end up with slightly higher compression. Do a search of previous posts - there are some folks on here who have done the swap and who know where to get the parts for the best price. __________________ Strike down the unroadworthy! 2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more '94 Rio Red Cobra: All the bolt-ons, 3.73s

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06-26-2002, 09:52 AM	#4
MIKESHAW Registered Member Join Date: May 2002 Location: maryland Posts: 32	THE 99+ HEADS HAVE MORE AIR FLOW THAN THE 98 AND BELOW.