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SVTPerformance's Chain of Restaurants
The Blower Bistro
Cams for superchargers
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<blockquote data-quote="69gt4speed" data-source="post: 7471887" data-attributes="member: 7772"><p>btw not real thrilled on some of those slot designs per my dsm friends, some can slip. At the least I'd loctite them w the blue after you get what you want.</p><p></p><p>Usually per most ppls 2v theory w s/c 10 to 20 deg more exhaust duration and more lobe seperation. On a dohc 4.6 most s/c cams are 114 seperation w 112 for n/a. The idea is the s/c will force in air and fuel easy enough, getting gasses out needs more time or deg as it doesn't have the s/c to help. I can tell you on a modded street dsm duration is about 272 duration adv. But many 4v heads flow more on exhaust % wise than than a 2v so duration on exhaust is equal or lil less. I'd look at the crower stage 1 for zetec comparing to a dsm turbo 272 2.0 street setup. Call them at least. Too much cam duration sucks imo, don't need it on a 4v to make power. Won't idle etc.</p></blockquote><p></p>
[QUOTE="69gt4speed, post: 7471887, member: 7772"] btw not real thrilled on some of those slot designs per my dsm friends, some can slip. At the least I'd loctite them w the blue after you get what you want. Usually per most ppls 2v theory w s/c 10 to 20 deg more exhaust duration and more lobe seperation. On a dohc 4.6 most s/c cams are 114 seperation w 112 for n/a. The idea is the s/c will force in air and fuel easy enough, getting gasses out needs more time or deg as it doesn't have the s/c to help. I can tell you on a modded street dsm duration is about 272 duration adv. But many 4v heads flow more on exhaust % wise than than a 2v so duration on exhaust is equal or lil less. I'd look at the crower stage 1 for zetec comparing to a dsm turbo 272 2.0 street setup. Call them at least. Too much cam duration sucks imo, don't need it on a 4v to make power. Won't idle etc. [/QUOTE]
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