Originally Posted by rb446
Originally Posted by Tig
What was the trap mph, rpm and slip BEFORE the converter was replaced ?
TCI specs state "up to 4000rpm stall" with the caveat "dependent upon motor combination"for that particular model. Could be the issue is elsewhere in the 'box ?


Hey Tig, this is Jim Smiths red challenger you know the one. He had a hughes 3500 in it before, going 11.5>6's@116>117+'s. 1.65>1.66 60's. Faults found in 727, rebuilt with all good parts and this converter, don't know the rpm prior but picked up .5>6 10ths and 4mph and now doing 1.56 60's. He prob would've picked up some with just the box being rebuilt as rear clutches were toast, how much the verter is helping I don't know but as said near 6800rpm@the stripe is not conducive with 3.91/28" tyre combo and 555fwhp in 3800lbs.

60 Foot E.T. : 1.54 Seconds
1/8 Mile E.T. : 6.98 Seconds
1/8 Mile Trap Speed : 97.40 MPH
1/4 Mile E.T. : 11.06 Seconds
1/4 Mile Trap Speed : 121 MPH
1/4 Mile Trap RPM : 5,689 RPM+20%=6826

http://etslips.co.uk/Ticket.php?ts=2022-06-04%2020:09:41


Jim ran 119 a couple of times last year and a few 11.4's I thought he was doing well then !! Slip seems excessive.......I'd be dropping the trans pan, looking at the fluid and looking for any excessive build up of clutch fibre in the bottom of the pan. If there is non or it's nominal it may be the converter ???

'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03