[Rory428]

I have no personal experiances with the Nascar or road race Jerico 4 speeds, but I have been running a Jerico DR-4 in my 2 drag cars for some time now. It has been in my low 10 second 428FE powered Ford Fairmont for 6 race seasons, & this year I converted it to my 85 Mustangs 302. After hundreds of 6000-6600 rpm clutch drops, I have yet to hurt it whatsover. In fact, when we pulled it apart to change the gear ratio`s for the 302,this was the first time the covers were removed since I first installed it. Awesome race trans, but I certainly would not want to drive it on the street! In addition to the very noisy straight cut gears, there is considerable backlash when getting on & off the throttle. Although it shifts like the proverbial "hot knive thru butter" under full throttle, it does not like to be "granny shifted" (very crunchy noises!), nor does it take kindly to downshifting. Again, these are based on my own experiances with the drag racing unit, a road race slider equipped unit may be a totally different animal.