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The Terminator
Engine/Tuning
Cams on pullied eaton ?
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<blockquote data-quote="olympic" data-source="post: 16400477" data-attributes="member: 168598"><p>Agressive cams can definietely cause all the driveability issues you mentioned and more. I bought my car with Stage 4 Crower cams and swapped them out for stage 2's last year. The only thing good about the 4's was the choppy idle. Any kind of low speed driving was always a PITA and IAT2's would spiral out of control if I drove in city traffic for any amount of time. Lower rear gears won't help and will just make your first 2 gears completely useless.</p><p></p><p>A PD blower like ours needs strong intake vacuum for the bypass valve to operate properly. When you install big cams with lots of overlap, you kill the intake vacuum so the bypass flutters open/closed while crusing or just stays closed causing all the problems mentioned above. A low vacuum bypass actuator can help but will cause driveability issues of it's own such as an annoying surge when transitioning from vacuum to boost. </p><p></p><p>If you are dead set on cams, I would strongly recommend going through Todd "NA SVT" Warren over on his facebook page. He can spec you some cams based on your build and recommend how to degree them to meet your goals. Mild cams can have a choppy idle with enough overlap dialed in and agressive cams can idle like stock if degreed properly. It all depends on your goals.</p><p></p><p>Here's my car with Crower Stage 2's. Idles and drives nearly stock.</p><p></p><p>[MEDIA=youtube]Znkzo2dx_LE[/MEDIA]</p><p></p><p>Here it is with Stage 4's . Sounds great!</p><p></p><p>[MEDIA=youtube]yzwPrqL0twI[/MEDIA]</p><p></p><p>Here I am struggling just to drive it off the lift before the engine has warmed up...lol!</p><p></p><p>[MEDIA=youtube]qjKFKKGuEic[/MEDIA]</p></blockquote><p></p>
[QUOTE="olympic, post: 16400477, member: 168598"] Agressive cams can definietely cause all the driveability issues you mentioned and more. I bought my car with Stage 4 Crower cams and swapped them out for stage 2's last year. The only thing good about the 4's was the choppy idle. Any kind of low speed driving was always a PITA and IAT2's would spiral out of control if I drove in city traffic for any amount of time. Lower rear gears won't help and will just make your first 2 gears completely useless. A PD blower like ours needs strong intake vacuum for the bypass valve to operate properly. When you install big cams with lots of overlap, you kill the intake vacuum so the bypass flutters open/closed while crusing or just stays closed causing all the problems mentioned above. A low vacuum bypass actuator can help but will cause driveability issues of it's own such as an annoying surge when transitioning from vacuum to boost. If you are dead set on cams, I would strongly recommend going through Todd "NA SVT" Warren over on his facebook page. He can spec you some cams based on your build and recommend how to degree them to meet your goals. Mild cams can have a choppy idle with enough overlap dialed in and agressive cams can idle like stock if degreed properly. It all depends on your goals. Here's my car with Crower Stage 2's. Idles and drives nearly stock. [MEDIA=youtube]Znkzo2dx_LE[/MEDIA] Here it is with Stage 4's . Sounds great! [MEDIA=youtube]yzwPrqL0twI[/MEDIA] Here I am struggling just to drive it off the lift before the engine has warmed up...lol! [MEDIA=youtube]qjKFKKGuEic[/MEDIA] [/QUOTE]
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