Hey guys, i know i havent been on the forum for a while but thats cause of school, anyways i finally went to moroso yesterday and well My car mad me wanna cry!! my first quarter mile i ran a 17.423 at 84 MPH, I have exhaust intake and a Hypertech chip with tottaly rebuilt engine its a 5.7 auto and it iwas in overdrive, my car would get to 7k rpms and not **** so i had to let off in 1st and 2nd gear whats wrong!! the second run i did 16.832 at 88.6 mph cause that time it only stuck at 3rd gear and then i had to let off, what is wrong with my car? plz let me know!!! also jsut to letu know today about an hour ago i went and i floored my car jsut to see how it reatd and it shifted at 6700 flawlessly with the pedal to the floor....why do i have a 17 SEC CAM

 

Try manually shifting it no higher than 5500 RPM. Your TPI motor is not pulling above 5500, therefore you are wasting your quarter mile time shifting so high.

 

it was in overdrive, i was not doing it manually

 

Yes he said try shifting the tranny manually, from gear to gear at 5500 rpm.

 

LOL. Looks like we got a brain here.

 

shifting manualy isn't going to let him shift earlier. the engine is still gonna continue to run to 7k before it shifts no matter when you move the gear selector. adjust your TV cable..

 

7k out of a TPI that sounds mild I know Gm tachs are generous but are you for real? I would make sure your TV cable is adusted right away or you will ruin the trans if its not right.

 

Well first off, if you're drag racing u shouldn't be in overdrive. overdrive is made for cruising. start of in first and continue through the gears until you reach overdrive. But shift at 5500 max rpms. If ur times get no better than something else is seriously wrong.

 

Uhh, WRONG! I know cause I shift mine manually at the track and even my wimpy little LO3 runs a 16.5@89mph.

 

Ye, but your TV cable may be set right. If his isn't the trans may still not shift before 7000 at WOT even if he does manually shift it. I beleive you have to have a kit installed for manual shifting to be precise.

But then again I havn't had an automatic in 10 years so I could be wrong about that.

 

As far as I know, the Throttle Valve cable doesn't affect the shift point if you shift manually. My tranny shifts at whatever RPM I decide if I shift it manually.

 

If his transmission shifts late then it won't help. Manually shifting is only useful for holding it in gear later than it would shift on its own.

 

My little LO3 likes it when I shift at around 5300-5500 rpm.. 15.4@91mph stock heads, intake, cam and headers...

 

rsfreak i think somthing is wrong with ur car to. no offence but a 16.5 is horible even for an lo3. My friend runs that in his 2001 eclipse gs, And whenever we race i smoke his ***. no offence to you just pointing somthing out.

 

what he said..

 

Could be, especially if Slade1 is running more than a full second faster than me! I am a track newbie though so it could just be my technique.

 

Could be a bad TV cable, or out of adjustment, but probably not. The TV cable will automatically adjust itself if it is too tight. So, if your shifts were happening too early, then I would say it's the TV cable, but since the shifts are late, then I would look elsewhere, although I would still make sure it was operating properly. I would look into the transmission itself. Check your fluid level. It could also be the governor within the transmission. If the governor weights are stuck, it will shift much later than it was designed to. You may want to take it to a transmission shop and ask them for advise. Most will do a free road test. Good luck.

 

Some times you tend to over look the simple things. Have you check your trans fluid lately? Pull the dip stick and see if it smells burnt or if there is enuff there.

 

right on

i also say go adjust your TV cable