wondering, on an automatic, with 4.88's cai. long tubes, full exhaust, and good traction, if high 12's would be possible at all. also with drag radials. just a question for someone i know who just got a z 28 and wants to trun it into a drag car. th anks

 

I think you'd need a converter too.

 

488's ??? You'd probably need a stall converter...but then again i never heard a LT1 runnin 488's

 

You may actually hit your top speed before the end of the track with 4.88's too...not sure though.

 

Yeah bet u probably would or close atleast, those are ridiculous gears! ur friend would aslo have to get some tunning to take care of the top speed limiter....4.88s :laughs: crazy kids....

 

wouldn't that be pretty abusive for a STOCK valvetrain?? why is ur friend in such a rush to hittin 12.x's?? or is hittin 12.x's gunna lead to hittin something else???

 

yes it is abusive ,not a good idea, there is much better ways to get down the track faster

 

well what about 4.56's or should he just go with 4.10s he already has a 12 bolt rear for the car too

 

Even if it is going to be a track only car, I still wouldnt go any higher than 4.10s. When he actually starts putting down some serious power down and trapping into the high teens and 120's he'll need them.

 

u have to figure with those huuuuge gears he might get out quicker (might) but hes going to be in overdrive no doubt about it when he crosses the quarter mile line.u dont want to be in overdrive if u can help it.unless hes using an extremely tall tire which u would have no need for in a bolt on lt1.i wouldnt go any higher than a 4.10.if he already has a 12 bolt cool but i have 3 friends with autos running mid 10's on stock 10 bolts.6 speeds on the other hand its basicly a requirement for a 12 bolt or 9 inch once ur even in the 12's.

 

the most id advise to go would be 410's

 

CAI, headers, 4.10's for m6 3.73 for A4, cut out, some slicks and 100 wet shots

 

Correction, tinny gears! Gears are oppisite of there numerical value... Small number, i.e. 2.73's are big, where as big numbers, i.e. 4.88's , are small.

 

if u want to gear techinal yes ur right.but i meant as for the number 4.88 is a much bigger ratio than i would recomend.