Contour Enthusiasts Group Archives Forums Modifications 3.0L Duratec SVT 3.o vs NonSVT3.0??

If you call SHO Shop, be sure NOT to talk to that chowderhead Ray that usually answers the phones. Not only doesn't he know the answer to your question, but he'll try to answer it only to be totally wrong. Just ask for Vadim and go straight to the horses mouth.

But the Sho Shop car also had larger ported intake runners and bored TB that were both larger than David's, not to mention a dyno at their disposal to tune repeatedly on. In their write ups in MM&FF, Sho Shops had also done EH port matching on the intake side of the SVT heads to match the larger runner ports. I think that for David to out dyno Sho Shops proves a lot about cams and head work. Some offsetting mods in favor of David Z.

Also, the heads that David has have a steel insert under the valve. I talked to Chris R. about them (whom David got the heads/cams from) about getting a set copied since David had already purchsed them. $$$1500$$$ just for the inserts is the first quote I got from a recommended shop. The steel inserts are needed to keep the aluminum head material from cracking between the larger 3 liter valves once the material is removed to install the larger valves in the smaller chambered head.

Did David Z use the stock 60mm throttle body? If so, that is someone who should try the 65mm,

Instead of using 3L valves since the steel inserts are an expensive PITA, how about custom big valves with stock size/mnarrow stems? Too expensive?

It's not the stems that are larger, it's the valve face. The larger valve face is what creates the problem, custom or not. The distance between the seats is where the steel inserts would need to go...

David Z not only doesn't have the bigger TB, but also doesn't have the ported upper intake. He does however, has the larger lower intake manifold.

Even if David got both the TB, and larger upper intake, and got time to tune his car, I don't think that his horsepower level would raise above 300.

Maybe the heads on our cars are already pretty well designed? It seems that getting headwork which could exceed $3000 is not really worth 20 odd horsepower, but I must admit having a 100 hp/ltr engine would be badass!

James

David is using a 3 liter lower intake modified to work with the 2.5 upper. The 3 liter lower measures at 34/35mm primary/secondary. The ones Sho Shops has is even larger at 37/35mm primary/secondary. The larger manifolds combined to 15HP gain over SVT intakes on the 3 liter according to Sho Shops.

I can get the Contour heads ported and polished for just around $650. this is a very high quality job and he is the guy that ports all my SHO heads. This includes a valve job too. I will know something about my after market cams very soon. The grinder is almost done with the measurements.

OK ALL THIS TALK ABOUT THE 30.L SWAP BEING A HUGE UNDERTAKING IS B.S.. I HAVE DONE MANY A SWAP AND THIS WAS AS STRAIGHT FOWARD AS THEY COME....AND WORTH IT..LET ME TELL YA, TO FEEL A TOUR PUT YOU IN YOUR SEAT IS A AMAZING EXP. QUESTION LET ME KNOW.? AND FOR THE SHO-SHOP, THEIR A GOOD REPUTABLE COMPANY.

All this talk is making me go back to school....

WHO EVER SAID IT WAS A HUGE UNDERTAKING? NOBODY. TAKING A MOTOR IN AND OUT OF A CONTOUR IS THE HUGE UNDERTAKING COMPARED TO MOST OTHER CARS, PERHAPS THAT"S WHAT YOU READ. PLEASE TAKE YOUR CAPS LOCK OFF NEXT TIME... IT HURTS MY EARS FROM ALL OF THE YELLING...

Now, let's start over... who are you and what car do you own with what mods? Sounds as if you've done a 3 liter swap... pretty straight forward, but not quite as easy as swapping out small blocks or going from 302 to 351 Fords... but still quite easy, you're right. Getting to know someone on the net is hard, we need pictures, dyno charts, the works... if you have them.