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I'd like to do a 2001-up 3L swap with SVT intake manifolds and cams, but with 3L heads. Now I understand that one must perform some mods to the heads and LIM or use some sort of adapter plate to make this combination possible. I've got a few questions. First, is there anybody out there who sells pre-made adapter plates? If so, where can I get them and how much are they? Second, if these adapter plates are not availible pre-made, are they difficult to make and/or is there somebody with templates out there who has made them before? I'd like the extra drainage holes of the 3L heads, but if the adapter plates are too much of a hassle, I think that I might be better off just fitting 3L valves into my SVT heads.
Lastly, on a semi unrelated note, I have heard that new timing chains are required in some instances when combining head and cam packages. Is the 2001-present head with SVT cams such a combo? If it is, what chains do you use to make it all work?
I'm really sorry if these topics have been covered before, and I am sure they have. I have done quite a bit of searching and haven't been that successful in finding specific info. Any help would really be appreciated. Thanks.
Andy
"Redline is just a suggestion... Sometimes isa necessary to missa use the car..." -Enzo Ferrari
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Joined: Sep 2002
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you are better off just modding the heads to work with your intakes and not using adapter plates.
as for the timing gear, if you use svt cams you MUST use all the svt timing gear. if you use 3l cams you MUST use 3l timing gear.
2000 csvt #1553
Black/Tan
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It really isn't that hard to port the heads to match the SVT intake. If you need a point of reference, look at DemonSVT's homepage, or search for my oval port pics in the pics and video section.
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I also posted pictures of it in a few places. Takes time and you need to have aluminum welded in or use something like JB weld to fill in the injector spots on the heads. I think there are some on here: http://www.cardomain.com/id/blackcoog
1999 3.0L Cougar: 220fwhp and 200tq
2003 VW Passat W8 with 4 Motion AWD
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PM for intrest in 3L SVT Contours, 3L swaps into your current car, Prepped 3L engines, or anything 3L related.
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Originally posted by Blackcoog:
Takes time and you need to have aluminum welded in or use something like JB weld to fill in the injector spots on the heads.
I had heard about this before. But i cant find anything in detail.
Demon does an awesome job detailing step by step with pics what needs to be ground but i dont see anything regarding jb welding injector spots.
98 csvt t-red.. sho-shop intake, b&m, fidanza, spec1 clutch, Torsen, DMD,optimized Y& TB, Brullen, rear strut bar,h&r's,17" konig traffik's.
"I say what I mean and I do what i say"
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He doesn't list it, but he has mentioned it countless times. Moving it to the center optimizes the flow, since the original injector boss is only in the primaries of the LIM.
Driving the Caliber
Side project: The LT-5 Fiero is being born..
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Actually, look at his final pics of the port after the heads have been installed.....easy to miss
2005 Ford F150 SuperCab FX4
1964 Chevrolet Impala SS
1998 CSVT: 354HP/328TQ @ 10 psi, now gone 
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You fill the injector spacing with quicksteel or something similar. Very easy to do.
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Originally posted by zm830101:
you are better off just modding the heads to work with your intakes and not using adapter plates.
not true covered many times, a oval port setup such as demon's will be better then a stock head with 3L valves
98.5 Black SE ATX
S&B filter, SVT MAF, optimized SVT TB, mesh grille, removed orange reflectors, painted rear reflector, gutted pre-cats, optimized SVT LIM, 19lb injectors, resonator removed
cant afford an svt but lookin for 1 in nc
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Originally posted by gearhead98:
Originally posted by zm830101:
you are better off just modding the heads to work with your intakes and not using adapter plates.
not true covered many times, a oval port setup such as demon's will be better then a stock head with 3L valves
No you are wrong. What he means is you should just mod the oval port heads to fit the split port manifolds. Instead of say making an adapter plate so that they go from split port back to oval port. Additionally, this plate would raise the intake, which in turn could cause clearence issues with the hood. Perhaps...
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