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post #1 of 8 (permalink) Old 10-28-2006, 07:43 PM Thread Starter
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Lightbulb More questions... valve covers/chip

So I tore apart another 4.6 v-8 thunderbird's motor for those counting.... thats 2 4.6 thunderbirds off the road for mods and rebuilds 1 alpine green 97, and 1 white 96.

This ones white, and will not getting as much attention to detail as the other one, probably just old parts off of the alpine green one... but while I was in there it got me to thinking.... maybe I should put 5.4 PI heads on the alpine green one and my old stock heads on the white one, than the white ones could go on ebay because they have like 185xxx miles and the green ones have 81xxx miles,

BUT...

right after thinking that it brought up some more questions I want answered, so please chime in... Will BBK windsor valve covers and 5.4 heads fit on my thunderbird (green one)? Because I can get windsors a lot more easily than romeos and would need valve covers so why not right? I just wanted to know if they will fit in between the shock towers.

Also... just to clarify... if I go with PI heads, a PI intake, and kooks headers I need to get a chip and use the stock maf and injectors right?
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post #2 of 8 (permalink) Old 10-28-2006, 08:16 PM
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So you wanna put 5.4 heads on your stock 4.6 block...so then you'd need the 5.4 intake manifold and probably the front cover also. Why do you want to do this swapping may I ask?
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post #3 of 8 (permalink) Old 10-28-2006, 08:55 PM
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5.4 heads are the same as 4.6 heads. If you have windsor heads you need windsor valve covers, timing cover is same as well(has nothing to do with the heads)

For the heads, intake, and headers, as long as you leave the maf and injectors alone you dont need a tune (although one would make it run even better)

Jim

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post #4 of 8 (permalink) Old 10-29-2006, 12:19 PM Thread Starter
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Hotbird, 5.4 PI heads and 4.6 PI heads are the same, the only difference is windsor or romeo, I can get windsor heads easily but would need valve covers.... which brings me back to my question.... will BBK valve covers fit between the shock towers? Either way I'm going to need to buy valve covers, I just want to make sure they'll fit. Someone please chime in.
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post #5 of 8 (permalink) Old 11-02-2006, 11:12 AM
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Chris, are you wanting to use the BBK covers for better looks? If not, you can easily get a set of stock valve covers for those heads on ebay or elsewhere. If you wanting a nicer looking engine, then you might want to look at the Team Breed Valve Covers, they IMO are much better looking than the BBK's and also are the same size as stock covers, so no fitment problems as far as I know. Also, Moroso is coming out with some Modular Valve Covers as well, they arent out yet but I saw pictures of them over on Modular Depot and they look great. I think I'll either be doing Moroso or Team Breed Covers when I do my PI swap. I dont know if the BBK's will clear your shock towers or not, I wish I could help you there. If you want links to Team Breed or to see the Moroso Covers just let me know.
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post #6 of 8 (permalink) Old 11-02-2006, 11:25 AM
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The BBK's will fit, but its close. If I remember right, thunderbird96 (Jason) has a set. He has to raise the engine just to get the Valve cover bolts loose.

Rule of thumb for needing a tune.

If the computer reads it, or controls it, you need a tune if you change it. (I.E. MAF, Fuel Injectors, etc.) The computer doesn't "read" the heads, intake, cams, etc. just the amount of air that flows past them (and the MAF meter reads that) So the stock computer will work with the PI heads and intake. However, a tune is recommended to get the most out of all your hard work.


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Last edited by Traveler; 11-02-2006 at 11:30 AM.
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post #7 of 8 (permalink) Old 11-02-2006, 11:40 AM
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there is a problem with BBK covers that dont sit well with me. I have team Breed Covers and they have a groove machined into them to accept the factory gasket, the BBK covers dont, so you have a risk of a gasket not seating properly.

if you want aluminum covers, get team breed.

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1996 Braincoated, all Aluminum PI powered and obscenely loud Pearl White Tbird [email protected] AKA Dyrdek.
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post #8 of 8 (permalink) Old 11-02-2006, 07:58 PM Thread Starter
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Wow, thanks for the heads up on the gasket groove the great obuncina, I almost bought a set, also 281 tbird yes I am doing it pretty much for looks, I just didn't think it was very nice of ford to stick aluminum valve covers and tube manifolds on the 3.8 v6 and give the 4.6 v8 plastic valve covers and cast iron manifolds.

So it looks like I'm going to be getting team breed covers, thanks for all of the help everyone, and I'll probably get a chip in about 2-3 weeks, all these mods come at a price $$$

-1996 Pearl White Thunderbird 4.6 Sport 4v with many mods:
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