automec1062 Posted November 26, 2003 Report Share Posted November 26, 2003 is acting STRANGE. went with a 200 higher stall converter from the local specialist (he builds conv. for all the aera racers)and it seems to slip then catch then slips again . it is most notisable in 2nd and 3rd.it is making the truck feel odd slips , go ,slip , go, slip , go, slip then shift and start the cycle again. HELP the customer wants his truck back thanks mike Link to comment Share on other sites More sharing options...
BigTex Posted November 26, 2003 Report Share Posted November 26, 2003 You might check to verify the correct type of stall was used. Obviously, the converter has the correct spline count and proper fit, but I thik I read something about the trucks using a different type of lock up mechanism than the cars do. Not 100% sure on that. Link to comment Share on other sites More sharing options...
BluHawk141 Posted November 27, 2003 Report Share Posted November 27, 2003 It sounds like the converter may have been installed incorrectly damaging or breaking the pump. Link to comment Share on other sites More sharing options...
zippy Posted November 27, 2003 Report Share Posted November 27, 2003 sounds to me like an internal failure with the converter clutch or a failure of the pwm solenoid. Link to comment Share on other sites More sharing options...
MN C5 Posted November 27, 2003 Report Share Posted November 27, 2003 I think I read something about the trucks using a different type of lock up mechanism than the cars do. Not 100% sure on that. Hummm It will be interesting to see what failed with mine when it comes out. Those are the same symptoms I'm having. But mine ran fine for a couple thousand miles then took a dump. ...................................... Link to comment Share on other sites More sharing options...
automec1062 Posted November 27, 2003 Author Report Share Posted November 27, 2003 ok lets see how stupid i can make myself look after the inital road test i cked fluid level , it was ok. on the second drive it started acting up . third drive is when it got really bad , and started this post . wellll ummmmmm i thought i should ck the level again it was 2 qt. low . it is working good now . 2500 stall. this truck runs GOOD! 13.90 @99mph on a g-tech pro comp. 4800' eleavation and 30* and starting to snow and inital try at tuning the diablo (and 450 lbs of driver and pass.) mike Link to comment Share on other sites More sharing options...
BenKey Posted November 27, 2003 Report Share Posted November 27, 2003 ok lets see how stupid i can make myself look after the inital road test i cked fluid level , it was ok. on the second drive it started acting up . third drive is when it got really bad , and started this post . wellll ummmmmm i thought i should ck the level again it was 2 qt. low . it is working good now . 2500 stall. this truck runs GOOD! 13.90 @99mph on a g-tech pro comp. 4800' eleavation and 30* and starting to snow and inital try at tuning the diablo (and 450 lbs of driver and pass.) mike What all has been done to this truck? Link to comment Share on other sites More sharing options...
zippy Posted November 27, 2003 Report Share Posted November 27, 2003 we pretty well killed a yank before in my buddies camaro after making many runs with the t.c. engaging just after the 1-2 shift. not only that, but the trans shifting with the converter locked in also smoked the 3-4 clutches (until the bps raybestos). you aren't engaging the converter under w.o.t. are you mn? Link to comment Share on other sites More sharing options...
automec1062 Posted November 27, 2003 Author Report Share Posted November 27, 2003 when it came in it had the whipple charger on it running 5psi boost and the customer wants more power. i g-teched it and ran 14.69 to 14.90 @91 to 92.0 mph.i have added ASM headers , 1/4" smaller blower pully, comp cams (xr265hr i think) 213* 218* duration at .050 , .550" .563" lift and 115 centerline , it degreed in at 114.5 . and springs to go with it. with the heads off we did a little port work , 2 cut the valves , 3 angle valve job , radius cut below the seats, pocket port and port match the intake , and port and polish the exhaust. we picked up 23 cfm on the intake and 51 cfm on the exhaust (dont have the sheet with me at home so i dont have the raw #'s)and a diablo programmer.when i got the cam out the cam berrings were showing copper from about the 6 oclock to 10 oclock position on all 5 berrings(.004" clearance)the truck has 11200 miles on it , so i pulled the short block and replaced them. with the engine out thought what a great time to change the tork converter, so it has a 2500 stall converter. now i just have to figure out where to set all the stuff that the diablo can do. the 13.9 run was with +2% fuel -1% spark shift rpm at 5800 and all trans stuff at +12.5%. oh ya its hitting 6.5 psi boost. the denisty altitude here is genrally about 6000 . when we had a local dragstrip the sea level correction was almost 1 full second. sorry for the long post mike Link to comment Share on other sites More sharing options...
BigTex Posted November 30, 2003 Report Share Posted November 30, 2003 I think its normal for the cam bearings to show a little copper. I've read that on the newer engines, GM hones the cam bearings before assembly, thus the appearance of being worn. I think you pulled a perfectly good shortblock. Hope you didn't pull the heads just to do the cam swap. Link to comment Share on other sites More sharing options...
automec1062 Posted December 1, 2003 Author Report Share Posted December 1, 2003 pulled the heads to do port work mike Link to comment Share on other sites More sharing options...
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