5800 rpm at the traps going 119, is this right?

[KevinB]

Seems a little high to me.This is with 28" tires and 3.42's. Anyone with similar tires and trap speeds, what rpm are you at?

Thanks in advance!

 

[UNGN]

I'm 5200 at 118 with 275/60's with a locked up D5.

Your converter or trans is slippin'

 

[KevinB]

It's a nonlockup. Are you shifting into OD??

 

[UNGN]

no, that's in drive.

600 RPM of slip is pretty common in a loose converter.

 

[KevinB]

Thanks, UNGN. Converter is new and pretty loose. The tranny was just freshened up this Spring. I guess the converter is slipping. I was making sure I do not have to pull the tranny again this year. Sounds like everything is OK!

Too bad I had no luck with running 11's and a lockup. :frown: I run the car at the track every weekend. I could not find a converter that would last very long.

 

[c&cgn]

Sounds way loose to me. That's about where I was with my A/C N stall convertor with my GT70 turbo and it was quite a bit too loose for me.

With a PT54 you shouldn't need something that loose. Shouldn't be any reason you can't get a good l/u to live at that power level.

 

[GN87Mike]

Kevin,
I'm around 5200+ with a locked converter at 121-122 mph with 28's.

Mike

 

[jamericaniSS]

Kevin,
I'm around 5200+ with a locked converter at 121-122 mph with 28's.

Mike

sent pm

 

[ijames]

TCI has a slip calculator at http://www.tciauto.com/tech_info/calculators.htm#4 According to it you have 18.8% slippage, which is a bunch considering how far over the stall speed you are.