What makes the 4.6 different?
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Laughing Gas
Joined: Jan 2006
Posts: 1,098
Likes: 11
From: Minnesota
What makes the 4.6 different?
My 97 Mustang GT and my 98 f-150 both have the 4.6. I think the Mustang is 215 hp and the truck is 220 hp. Other than the year difference are the engines the same.. i.e.power, timing, intakes,exhaust. etc.. I know the Mustang came with true factory duals.. I wonder if the F-150 had been made with factory duals if the hp rating would have been higher? Just curious if anybody has some input
Thanks... Spotty
Thanks... Spotty
Postmaster
Joined: Oct 2006
Posts: 4,171
Likes: 12
From: SE Texas
Originally Posted by Spotty
My 97 Mustang GT and my 98 f-150 both have the 4.6. I think the Mustang is 215 hp and the truck is 220 hp. Other than the year difference are the engines the same.. i.e.power, timing, intakes,exhaust. etc.. I know the Mustang came with true factory duals.. I wonder if the F-150 had been made with factory duals if the hp rating would have been higher? Just curious if anybody has some input
Thanks... Spotty
Thanks... Spotty
JL
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Joined: Oct 2006
Posts: 4,171
Likes: 12
From: SE Texas
Originally Posted by Spotty
Other than the intake manifold, are they about part for part the same? Why is the intake different, is it a physical problem or a performance issue between the two?
Thanks...
Thanks...
JL
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Laughing Gas
Joined: Jan 2006
Posts: 1,098
Likes: 11
From: Minnesota
Thank you JL.. one more question and I promise I won't bug you anymore.(LOL) MY GT is 100% stock, summer driver only, still like new. I would like to leave it stock but would really like a set of Flowmasters, maybe a CAI, and a Diablo tuner. That whole CAI thing makes no sense to me with that filter in the hot engine bay. Would I gain any HP or is it just show with these 3 mods? I also hate to disturb that factory exhaust which is probably stainless? I promise I won't ask you any more Mustang question( I'm an older guy (53), I don't fit in real well on the Mustang site (LOL)
Spotty
Spotty
Postmaster
Joined: Oct 2006
Posts: 4,171
Likes: 12
From: SE Texas
Originally Posted by Spotty
Thank you JL.. one more question and I promise I won't bug you anymore.(LOL) MY GT is 100% stock, summer driver only, still like new. I would like to leave it stock but would really like a set of Flowmasters, maybe a CAI, and a Diablo tuner. That whole CAI thing makes no sense to me with that filter in the hot engine bay. Would I gain any HP or is it just show with these 3 mods? I also hate to disturb that factory exhaust which is probably stainless? I promise I won't ask you any more Mustang question( I'm an older guy (53), I don't fit in real well on the Mustang site (LOL)
Spotty
Spotty
CAI's are a joke-all of them. I've never seen a power increase from the CAI parts themselves-they typically skew the MAF lean and that's where their claims of 5-10 hp come from. The OEM air induction is more than adequate to feed the 4.6L with air-even at high hp and RPMs. Avoid the dronemasters-they're terribly loud and don't help any for power-it's all noise. There's more power to be made with the cat pipe on a '97-the OEM 6 cat setup is pretty restrictive. One of the biggest power gains for the '96-'98 4.6L's is swapping that terribly restrictive intake out for the later PI version,and you can also swap the cams for the '99-up for another easy,cheap power gain.
There's alot of discussion on it here:
http://forums.modulardepot.com/4-6l-2v-tech/2634-pi-vs-npi-data.html
And here's results from the intake swap on my car here:
http://forums.modulardepot.com/4-6l-2v-tech/3400-results-modified-pi-intake-npi-heads.html
Those threads are long,and somewhat heated at times,but they are a good read if you wanna make some decent power out of that '97.
JL
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Laughing Gas
Joined: Jan 2006
Posts: 1,098
Likes: 11
From: Minnesota
Just what I thought, that's why I leave it alone. It's a nice little muscle ride as it is, not the fastest, but always runs perfect, factory exhaust is throatty enuff..Thanks for the replies... I will read your links..
Spotty
Spotty
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