# blue4 **URL:** \ **Category:** PittSpeed Off Topic\ **Created:** [December 1, 2004, 12:03pm UTC](https://forums.speedlife.net/t/blue4/170749 "2004-12-01T12:03:25Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [December 2, 2004, 5:43am UTC](https://forums.speedlife.net/t/blue4/170749/21 "2004-12-02T05:43:34Z")
his march was an 04! ---
**Author:** ![Gray05](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@Gray05](https://forums.speedlife.net/u/Gray05)\ **Post date:** [December 2, 2004, 6:09am UTC](https://forums.speedlife.net/t/blue4/170749/22 "2004-12-02T06:09:27Z")
> [@8.1crew](#): > > his march was an 04! I was known as Blue when I owned that. the 4 in my name, stands for 4 valve. so ya, technically it couldve applied for my Mach and my Cobra, since both were “4v” 4.6’s ---
**Author:** ![Gray05](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@Gray05](https://forums.speedlife.net/u/Gray05)\ **Post date:** [December 2, 2004, 6:11am UTC](https://forums.speedlife.net/t/blue4/170749/23 "2004-12-02T06:11:28Z")
> [@Craig King](#): > > So it’s still a twin-screw? no, its a roots, the S281E has a twin screw on it. Difference between Roots and Twin screw. Both look the same on the outside with a snout. Roots=1 Internal Compressor…Typically only Eaton makes these (Jackson Racing Supercharger(Eaton M62), Eaton M90, M112) Twin-Screw=2 Internal Compressors (Kenne Bell, Whipple, Autorotor, Lysholm, Eaton M142) ---
**Author:** ![Turbo\_Silverado](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_silverado/32/5990_2.png) [@Turbo\_Silverado](https://forums.speedlife.net/u/Turbo_Silverado)\ **Post date:** [December 2, 2004, 7:06am UTC](https://forums.speedlife.net/t/blue4/170749/24 "2004-12-02T07:06:34Z")
> [@Blue4](#): > > no, its a roots, the S281E has a twin screw on it. > > Difference between Roots and Twin screw. > > Both look the same on the outside with a snout. > > Roots=1 Internal Compressor…Typically only Eaton makes these (Jackson Racing Supercharger(Eaton M62), Eaton M90, M112) > Twin-Screw=2 Internal Compressors (Kenne Bell, Whipple, Autorotor, Lysholm, Eaton M142) do u know almost everything about new fords??? :blue: ---
**Author:** ![Turbo\_Silverado](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_silverado/32/5990_2.png) [@Turbo\_Silverado](https://forums.speedlife.net/u/Turbo_Silverado)\ **Post date:** [December 2, 2004, 7:07am UTC](https://forums.speedlife.net/t/blue4/170749/25 "2004-12-02T07:07:05Z")
bad quote b/c ur taling about super chargers…but still do u??? ---
**Author:** ![Gray05](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@Gray05](https://forums.speedlife.net/u/Gray05)\ **Post date:** [December 2, 2004, 7:13am UTC](https://forums.speedlife.net/t/blue4/170749/26 "2004-12-02T07:13:34Z")
> [@95greenZ](#): > > bad quote b/c ur taling about super chargers…but still do u??? I know a good amount, that and GM’s I used to own a couple LS1’s before my Mach 1, and Cobra. had an 02 Camaro SS, with all the SLP power options, and an 02 Z28, both M6’s ---
**Author:** ![Turbo\_Silverado](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_silverado/32/5990_2.png) [@Turbo\_Silverado](https://forums.speedlife.net/u/Turbo_Silverado)\ **Post date:** [December 2, 2004, 7:38am UTC](https://forums.speedlife.net/t/blue4/170749/27 "2004-12-02T07:38:19Z")
> [@Blue4](#): > > I know a good amount, that and GM’s > > I used to own a couple LS1’s before my Mach 1, and Cobra. > > had an 02 Camaro SS, with all the SLP power options, and an 02 Z28, both M6’s ahhhh i c…why get rid of the ss ---
**Author:** ![77rednecktruck](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/77rednecktruck/32/5966_2.png) [@77rednecktruck](https://forums.speedlife.net/u/77rednecktruck)\ **Post date:** [December 2, 2004, 7:41am UTC](https://forums.speedlife.net/t/blue4/170749/28 "2004-12-02T07:41:36Z")
> [@95greenZ](#): > > ahhhh i c…why get rid of the ss because camEro’s suck ass and the mustangs are far superior in every category. teh mustang can nevar l0se 😃 ---
**Author:** ![Gray05](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@Gray05](https://forums.speedlife.net/u/Gray05)\ **Post date:** [December 2, 2004, 7:57am UTC](https://forums.speedlife.net/t/blue4/170749/29 "2004-12-02T07:57:26Z")
> [@95greenZ](#): > > ahhhh i c…why get rid of the ss eh, had problems. to be honest with you, stock for stock, the Mach 1, felt every bit as fast as an LS1. My best pass with it bone stock was 13.2 @ 105, which I’m sure could’ve been better if it had 275/40/17s on it, instead of 245/45/17s. Those Mach’s are also known for the freak 12.9 @ 107mph runs as well. Most guys are hitting 12.5-12.6’s on the Mach 1’s with ET Streets, and no power mods… thank god the rear ends are built in those things… unlike the pencil thick 10 bolts but as stated before, I’ve been around the block with cars, and in stock form the (2003-2004) NA 4v 4.6 is right on par with the LS1 ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [December 2, 2004, 8:04am UTC](https://forums.speedlife.net/t/blue4/170749/30 "2004-12-02T08:04:30Z")
> [@77rednecktruck](#): > > because camEro’s suck ass and the mustangs are far superior in every category. > > teh mustang can nevar l0se > > 😃 :sadwavey: :op: ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [December 2, 2004, 8:06am UTC](https://forums.speedlife.net/t/blue4/170749/31 "2004-12-02T08:06:36Z")
> [@Blue4](#): > > eh, had problems. > > to be honest with you, stock for stock, the Mach 1, felt every bit as fast as an LS1. > > My best pass with it bone stock was 13.2 @ 105, which I’m sure could’ve been better if it had 275/40/17s on it, instead of 245/45/17s. Those Mach’s are also known for the freak 12.9 @ 107mph runs as well. > > Most guys are hitting 12.5-12.6’s on the Mach 1’s with ET Streets, and no power mods… thank god the rear ends are built in those things… unlike the pencil thick 10 bolts > > but as stated before, I’ve been around the block with cars, and in stock form > > the (2003-2004) NA 4v 4.6 is right on par with the LS1 how the stock ls1 going 12.8’s ---
**Author:** ![Gray05](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@Gray05](https://forums.speedlife.net/u/Gray05)\ **Post date:** [December 2, 2004, 8:09am UTC](https://forums.speedlife.net/t/blue4/170749/32 "2004-12-02T08:09:37Z")
> [@8.1crew](#): > > how the stock ls1 going 12.8’s I know for a fact they can go 12.8’s on the Eagle F1 tires. I’ve done it, and darkstar witnessed it. But for 1.1L less in displacement, Ford is right there with the LS1 LS1’s are definitely awesome, but Ford has stepped up to the plate ---
**Author:** ![Turbo\_Silverado](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_silverado/32/5990_2.png) [@Turbo\_Silverado](https://forums.speedlife.net/u/Turbo_Silverado)\ **Post date:** [December 2, 2004, 8:19am UTC](https://forums.speedlife.net/t/blue4/170749/33 "2004-12-02T08:19:33Z")
fords heads r unbeliveble…those things flow sooo nice from what i hear ---
**Author:** ![Gray05](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@Gray05](https://forums.speedlife.net/u/Gray05)\ **Post date:** [December 2, 2004, 8:26am UTC](https://forums.speedlife.net/t/blue4/170749/34 "2004-12-02T08:26:46Z")
> [@95greenZ](#): > > fords heads r unbeliveble…those things flow sooo nice from what i hear thats why they pretty much don’t make aftermarket heads for the cobras, machs, marauders, and lightnings ---
**Author:** ![Turbo\_Silverado](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_silverado/32/5990_2.png) [@Turbo\_Silverado](https://forums.speedlife.net/u/Turbo_Silverado)\ **Post date:** [December 2, 2004, 8:28am UTC](https://forums.speedlife.net/t/blue4/170749/35 "2004-12-02T08:28:49Z")
im guessing thats where they r making some decent power out of those 4.6 ---
**Author:** ![Gray05](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@Gray05](https://forums.speedlife.net/u/Gray05)\ **Post date:** [December 2, 2004, 8:31am UTC](https://forums.speedlife.net/t/blue4/170749/36 "2004-12-02T08:31:34Z")
> [@95greenZ](#): > > im guessing thats where they r making some decent power out of those 4.6 eh, overhead cam is more efficient, which is one thing compression ratios are actually a tad higher than the LS1 I believe the LS1 is 10.1:1 or in that ballpark Mach 1, had 10.25:1 Cobra of course is 8.5:1 due to its supercharger Although the Mach, Marauder, and Cobra, share the same heads 🙂 It’s a good design ---
**Author:** ![Turbo\_Silverado](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_silverado/32/5990_2.png) [@Turbo\_Silverado](https://forums.speedlife.net/u/Turbo_Silverado)\ **Post date:** [December 2, 2004, 8:39am UTC](https://forums.speedlife.net/t/blue4/170749/37 "2004-12-02T08:39:22Z")
my slow ass lt1 has 10.5 1 compression…why soo low in th ls1?? ---
**Author:** ![smokeyburnouts](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/smokeyburnouts/32/5987_2.png) [@smokeyburnouts](https://forums.speedlife.net/u/smokeyburnouts)\ **Post date:** [December 2, 2004, 8:43am UTC](https://forums.speedlife.net/t/blue4/170749/38 "2004-12-02T08:43:45Z")
i thought LS1 was 10:1 and LS6 was 10.5:1…i might be wrong though ---
**Author:** ![Gray05](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@Gray05](https://forums.speedlife.net/u/Gray05)\ **Post date:** [December 2, 2004, 8:44am UTC](https://forums.speedlife.net/t/blue4/170749/39 "2004-12-02T08:44:51Z")
Ford 4v Head Pictures Closeup ![http://www.modularfords.com/forums/attachment.php?attachmentid=959&stc=1](http://www.modularfords.com/forums/attachment.php?attachmentid=959&stc=1) ![http://www.modularfords.com/forums/attachment.php?attachmentid=964&stc=1](http://www.modularfords.com/forums/attachment.php?attachmentid=964&stc=1) 4v Flow #'s Valve Lift B Series 99-01 03 Cobra/Mach 5.4L FR500 5.4L Corbra R .050 39 40 40 47 73 42 .100 79 88 88 95 110 85 .150 114 120 118 127 137 117 .200 144 152 151 153 163 150 .250 172 178 178 177 183 181 .300 194 197 201 193 200 210 .350 207 211 211 207 211 233 .400 217 218 221 211 219 248 .450 225 222 229 215 226 259 .500 231 225 233 218 228 268 And a picture of the new Variable Valve Timing 3v heads for shits and giggles ![http://www.accordclub.com/BS/NMRA2004BYSCOTTGEARHARTPICS/3v3.JPG](http://www.accordclub.com/BS/NMRA2004BYSCOTTGEARHARTPICS/3v3.JPG) ---
**Author:** ![Gray05](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@Gray05](https://forums.speedlife.net/u/Gray05)\ **Post date:** [December 2, 2004, 8:45am UTC](https://forums.speedlife.net/t/blue4/170749/40 "2004-12-02T08:45:32Z")
Ford should be releasing pictures of the DOHC 5v Heads in January [Previous page](https://forums.speedlife.net/t/blue4/170749.md?page=1) [Next page](https://forums.speedlife.net/t/blue4/170749.md?page=3)