performance question?

blackbird98 · 11-29-2006, 03:14 AM

My question is for my 4.6 98 gt engine and transmission. what is the peak power that my engine and transmission can handle?

PureStang · 11-29-2006, 04:38 AM

400rwhp/rwtq ish..some can handle more, some can handle less..but 400 seems to be the magic number

r3dn3ck · 11-29-2006, 12:01 PM

I'd be a little more conservative only because he's in an NPI car. He's on a 98 which means non-PI heads and less overall potential at any boost level. Not to mention the t45's aren't as tough as the 3650 and his car is likely to have higher mileage than we'd think of on 99+ cars and high miles + big power = sudden need for a rebuild.

I'd say, you should (assuming a power adder is in your future) keep the boost below 10lbs intercooled or 8lbs non-cooled. That's good for 320ish hp and a bit more tq.

There are many many other weak points that you'll want to deal with on your way to blower-level power. Not the least of which is the clutch, rear end and fuel system.

However, yes... 400 is the recommended stopping point for the bottom end of any of the modular 4.6s.

blackbird98 · 11-30-2006, 02:20 AM

thanks for the information i appreciate it..i dont plan on adding any power booster in the near future..but ill take what you said into consideration

11-29-2006, 03:14 AM	#1 (permalink)
blackbird98 Junior Member Join Date: Nov 2006 Posts: 2	performance question? My question is for my 4.6 98 gt engine and transmission. what is the peak power that my engine and transmission can handle?

11-29-2006, 04:38 AM	#2 (permalink)
PureStang WE ARE PENNSTATE Join Date: Jul 2005 Location: Downingtown/West Chester, PA Posts: 5,059	400rwhp/rwtq ish..some can handle more, some can handle less..but 400 seems to be the magic number __________________ Brandon J My Ride sig by purestang

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
yucko the clown	GREG@94GT	Videos	4	02-28-2006 10:58 PM
Aftermarket Seats for Parchment Interior?	fallstar	General Tech Forum	0	06-14-2005 08:45 AM
My new GT....	xcler8	Pictures	16	01-18-2005 09:43 AM
18x10 Saleen Replica's	TampaSVT	Modular 4.6L Tech	8	12-09-2004 05:59 AM

11-29-2006, 12:01 PM	#3 (permalink)
r3dn3ck Wowbagger hates me too! Join Date: Nov 2005 Location: Magrathea/California Posts: 7,149	I'd be a little more conservative only because he's in an NPI car. He's on a 98 which means non-PI heads and less overall potential at any boost level. Not to mention the t45's aren't as tough as the 3650 and his car is likely to have higher mileage than we'd think of on 99+ cars and high miles + big power = sudden need for a rebuild. I'd say, you should (assuming a power adder is in your future) keep the boost below 10lbs intercooled or 8lbs non-cooled. That's good for 320ish hp and a bit more tq. There are many many other weak points that you'll want to deal with on your way to blower-level power. Not the least of which is the clutch, rear end and fuel system. However, yes... 400 is the recommended stopping point for the bottom end of any of the modular 4.6s.

11-30-2006, 02:20 AM	#4 (permalink)
blackbird98 Junior Member Join Date: Nov 2006 Posts: 2	thanks for the information i appreciate it..i dont plan on adding any power booster in the near future..but ill take what you said into consideration