powerbands?
powerbands? We have been puzzled by the powerbands of some new cams we are trying out. All cams are a comp ground on 4x4 Extreme Lobes.
Car 1. LS1 with a LS6 intake, ported TB, Jet-hots and x-pipe. Cam is 246/252 .615/.625 110
Car 2. 396 with 04 GTO intake and stainless works setup. Cam is 246/252 .615/.625 110
Car 3. LS1 with 6.0L heads, FAST 90/90 setup, Full Exhaust. Cam is 244/246 .610/.619 110
Car 4. 427 AFR 225s, FAST 90/90 setup, kooks and full exhaust. Cam is 256/264 .625/.625 113
All cars quit pulling around 6200 rpms. and kinda flat line all the way to 7000. Car 1 falls a little in power after 6200 because the intake size is smaller. but only drops about 15 hp between 6200 and 7000. We don't think it is valve float due to the fact that they aren't really losing hp. I am wondering why these cars aren't pulling to at least 6800 rpm. Do you think the lobes that the cams are ground on doesn't allow them to pull that high. Do you think the cars need to be tuned in Speed Density? I am very stumped as to why all cars are performing the same. Different peak numbers but graphs are very similar. Any ideas?
Car 1. LS1 with a LS6 intake, ported TB, Jet-hots and x-pipe. Cam is 246/252 .615/.625 110
Car 2. 396 with 04 GTO intake and stainless works setup. Cam is 246/252 .615/.625 110
Car 3. LS1 with 6.0L heads, FAST 90/90 setup, Full Exhaust. Cam is 244/246 .610/.619 110
Car 4. 427 AFR 225s, FAST 90/90 setup, kooks and full exhaust. Cam is 256/264 .625/.625 113
All cars quit pulling around 6200 rpms. and kinda flat line all the way to 7000. Car 1 falls a little in power after 6200 because the intake size is smaller. but only drops about 15 hp between 6200 and 7000. We don't think it is valve float due to the fact that they aren't really losing hp. I am wondering why these cars aren't pulling to at least 6800 rpm. Do you think the lobes that the cams are ground on doesn't allow them to pull that high. Do you think the cars need to be tuned in Speed Density? I am very stumped as to why all cars are performing the same. Different peak numbers but graphs are very similar. Any ideas?
4x4 extreme lobes are meant for trucks. The power and TQ come in early and fall off sooner as compared to a car. Trucks need there power low for pulling and to get the heavier truck moving. Probablly had the truck intake in mind as well when they designed it.
Originally Posted by Beast96Z
4x4 extreme lobes are meant for trucks. The power and TQ come in early and fall off sooner as compared to a car. Trucks need there power low for pulling and to get the heavier truck moving. Probablly had the truck intake in mind as well when they designed it.
Originally Posted by jrp
what ICL's?
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From: Orange Park/ Jacksonville, FL
Originally Posted by supersix
what do you mean by ICL's
So for example, the 1st 3 cams are on a 110 LSA. If they all had 2* advance built in, then you would have a 110+2, giving you a 108 ICL.
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