most-hated Posted October 8, 2009 Report Share Posted October 8, 2009 got the new cam installed and tuned , a/f is around 11.5-7 the truck felt good till i made it a dual 3" xpipe with 2 magnaflows and the truck felt weak, i thought it was just me , well took it to the track yesterday 12.1@112mph with a 1.77 60ft , thats was best all motor .then gave it a 100 shot nos pass 11.6@120mph 60ft was 1.74 , same times as the gt2-3, what can be wrong ? do yall think the exhaust is killing me? old cam gt2-3 207/220 570/575 118lsa newcam patrick g spec 231/247 617/623 115lsa mods are 6.0 radix mp112 2.8 pully full bolt on 36k pi patriot stg 2 heads hp tuned 3.73's true track and cal tracks Quote Link to comment Share on other sites More sharing options...
misterp Posted October 8, 2009 Report Share Posted October 8, 2009 (edited) Tell us more about the exhaust; what configuration did you have before vs. now? ALSO, since you went to the track, post your entire timeslip, if you have a before/after comparison that would be helpful too. That cam has a LOT of exhaust duration, it may have been purpose-designed for a more restrictive exhaust. Mr. P. Edited October 8, 2009 by Mr. P. (see edit history) Quote Link to comment Share on other sites More sharing options...
most-hated Posted October 8, 2009 Author Report Share Posted October 8, 2009 Tell us more about the exhaust; what configuration did you have before vs. now? ALSO, since you went to the track, post your entire timeslip, if you have a before/after comparison that would be helpful too. That cam has a LOT of exhaust duration, it may have been purpose-designed for a more restrictive exhaust. Mr. P. the only diff was the cam swap and going from y pipe to x pipe ok here goes the time slip gt2-3 y-pipe no nos i1 1.716 i2.000 i37.685 i3mph 89.647mph e.t [email protected] gt2-3 y pipe 100shot nos i1 1.717 i2 4.870 i3 7.482 i3mph 93.538 e.t [email protected] ok this time slips are with the new cam xpipe no nos i1 1.744 i2 5.240 i3 8.010 i3mph 88.858mph e.t [email protected] ok this time slips are with the new cam xpipe no nos i1 1.720 i2 4.979 i3 7.717 i3mph 89.437 e.t [email protected] new cam xpipe 100 shot nos i1 1.742 i2 4.877 i3 7.474+ i3mph 93.464 e.t [email protected] Quote Link to comment Share on other sites More sharing options...
Krambo Posted October 9, 2009 Report Share Posted October 9, 2009 What are your shift points? That new cam must have a high power band which most likely puts the little 'ol 112 way out of its efficiency range. Your new cam most likely shifted your power band into the mid 6k's easy. With the 112 on a 6.0, a high powerband is not the ideal set-up IMHO. I would try increasing the pulley size, retune! and shift higher. Quote Link to comment Share on other sites More sharing options...
most-hated Posted October 9, 2009 Author Report Share Posted October 9, 2009 (edited) What are your shift points? That new cam must have a high power band which most likely puts the little 'ol 112 way out of its efficiency range. Your new cam most likely shifted your power band into the mid 6k's easy. With the 112 on a 6.0, a high powerband is not the ideal set-up IMHO. I would try increasing the pulley size, retune! and shift higher. 6600 rpm are my points but if i put a bigger pulley wount i lose power cuz im making less boost Edited October 9, 2009 by la joker (see edit history) Quote Link to comment Share on other sites More sharing options...
casper Posted October 9, 2009 Report Share Posted October 9, 2009 imo thats to big of a cam Quote Link to comment Share on other sites More sharing options...
idahoBLKss Posted October 9, 2009 Report Share Posted October 9, 2009 imo thats to big of a cam dont you blow the boost right though the motor if your cam is too big on a f/i application... ??? im no expert but that is what i was told anyway. Quote Link to comment Share on other sites More sharing options...
casper Posted October 9, 2009 Report Share Posted October 9, 2009 ahahhaah was going on idaho and yes i belive ur right and marco i got a pretty good cam here for ur setup imo Quote Link to comment Share on other sites More sharing options...
casper Posted October 9, 2009 Report Share Posted October 9, 2009 6600 rpm are my points but if i put a bigger pulley wount i lose power cuz im making less boost i think he meant crank pulley Quote Link to comment Share on other sites More sharing options...
most-hated Posted October 9, 2009 Author Report Share Posted October 9, 2009 i think he meant crank pulley ohh my bat lol Quote Link to comment Share on other sites More sharing options...
most-hated Posted October 9, 2009 Author Report Share Posted October 9, 2009 (edited) dont you blow the boost right though the motor if your cam is too big on a f/i application... ??? im no expert but that is what i was told anyway. well Patrick g specked me that cam for an f.i apps Edited October 9, 2009 by la joker (see edit history) Quote Link to comment Share on other sites More sharing options...
most-hated Posted October 9, 2009 Author Report Share Posted October 9, 2009 I'm probably gonna make it a 3"ory and try it again Quote Link to comment Share on other sites More sharing options...
casper Posted October 9, 2009 Report Share Posted October 9, 2009 yea wey try that crank pulley it should wrk bttr and idk still seem like too much cam imo the one i have is a 228/234 588/598 with a 115+3 this is a very good cam but first get that y bak in there try it out and lets see wat it does Quote Link to comment Share on other sites More sharing options...
most-hated Posted October 9, 2009 Author Report Share Posted October 9, 2009 yea wey try that crank pulley it should wrk bttr and idk still seem like too much cam imo the one i have is a 228/234 588/598 with a 115+3 this is a very good cam but first get that y bak in there try it out and lets see wat it does thats what ima do. Quote Link to comment Share on other sites More sharing options...
Jaymz Posted October 9, 2009 Report Share Posted October 9, 2009 call me crazy.. but thats still a very respectable time.. I'd love to run that personally. Good luck gettin the kinks worked out Quote Link to comment Share on other sites More sharing options...
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