Shift Points and ET streets...
03-10-2003, 01:22 PM
#1
Shift Points and ET streets... I just went to the track yesterday and have a couple of questions....I am running a 230/230 .575 .575 110lsa cam with TEA S2 heads. What ~RPM should I be shifting the car at? Also How much difference(MPH) does running your ET streets @ 11psi cold vs 17psi cold?
Phillip
Phillip
03-10-2003, 01:36 PM
#2
03-10-2003, 01:36 PM
#3
Re: Shift Points and ET streets... well i have just about the same cam as you. mine is a 230/230 but on a 111 LSA. by the way, how does your car idle? any stumble of surging?
anyways i and a few others have dynoed this in shop and made peak power at around 6400-6450 rpms. it is a high reving cam. i would shift it at minimum 6600 rpms and max of 6800 (for all out hardcore). it absolutely hammers the car in these auto cars. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> also most auto cars dont need that low of a psi. i would try out and start at 17 cold and work your way down. most are great at 15 psi. 6 speeds i would go much lower, starting at 15 and workign down. i didnt feel comfortable under 12 psi personally.
anyways i and a few others have dynoed this in shop and made peak power at around 6400-6450 rpms. it is a high reving cam. i would shift it at minimum 6600 rpms and max of 6800 (for all out hardcore). it absolutely hammers the car in these auto cars. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> also most auto cars dont need that low of a psi. i would try out and start at 17 cold and work your way down. most are great at 15 psi. 6 speeds i would go much lower, starting at 15 and workign down. i didnt feel comfortable under 12 psi personally.
03-10-2003, 01:45 PM
#4
Re: Shift Points and ET streets... </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Pro Stock John:
<strong> I'd be shifting at least at 6400, what is the ICL of the cam?
11psi = sideways and dangerous
I run 15psi and no lower typically. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">PSJ,
230/230 .575 .575 110lsa 110icl, I was shifting at 6200 this weekend while running 12psi in the ET streets. Everyone is telling me that because the corvette is closer to a 50/50 weight DB to run higher pressure in the rear.
Phillip
<strong> I'd be shifting at least at 6400, what is the ICL of the cam?
11psi = sideways and dangerous
I run 15psi and no lower typically. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">PSJ,
230/230 .575 .575 110lsa 110icl, I was shifting at 6200 this weekend while running 12psi in the ET streets. Everyone is telling me that because the corvette is closer to a 50/50 weight DB to run higher pressure in the rear.
Phillip
03-10-2003, 01:46 PM
#5
Re: Shift Points and ET streets... </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by gator's 99TA:
<strong> well i have just about the same cam as you. mine is a 230/230 but on a 111 LSA. by the way, how does your car idle? any stumble of surging?
anyways i and a few others have dynoed this in shop and made peak power at around 6400-6450 rpms. it is a high reving cam. i would shift it at minimum 6600 rpms and max of 6800 (for all out hardcore). it absolutely hammers the car in these auto cars. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> also most auto cars dont need that low of a psi. i would try out and start at 17 cold and work your way down. most are great at 15 psi. 6 speeds i would go much lower, starting at 15 and workign down. i didnt feel comfortable under 12 psi personally. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">My car idles pretty well, no surging or but some stumbling at low RPMs. Thanks for the quick replies.
Phillip
<strong> well i have just about the same cam as you. mine is a 230/230 but on a 111 LSA. by the way, how does your car idle? any stumble of surging?
anyways i and a few others have dynoed this in shop and made peak power at around 6400-6450 rpms. it is a high reving cam. i would shift it at minimum 6600 rpms and max of 6800 (for all out hardcore). it absolutely hammers the car in these auto cars. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> also most auto cars dont need that low of a psi. i would try out and start at 17 cold and work your way down. most are great at 15 psi. 6 speeds i would go much lower, starting at 15 and workign down. i didnt feel comfortable under 12 psi personally. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">My car idles pretty well, no surging or but some stumbling at low RPMs. Thanks for the quick replies.
Phillip