GA/TA

this may be a stupid question but would a ls6 cam sound any different than a stock? if not is there any way to tell? im just wondering cause the guy i bought my car from said the guy who had it before him put one in, so he didn't have a receit.

PREDATOR-Z

Not by sound, but if you're still pulling after 6300 rpm, you prolly have one in.

GA/TA

yeah i pulls pretty damn hard all the way up havn't taken up that high yet.

ws6_PR

i got a trans am 98 A4 and i put a ls6 cam but he still making the same 1/4 mile and raise the mph 2 miles. the question is a what rev need shift? i got the hypertec in 6600 rev but make the limit in 6300. what i can do?

PREDATOR-Z

Raise your limiter to 6800 and raise your shiftpoints to 6600.
If I remember correctly in first gear, every +1 point raised is 150 rpm so you would need 500 rpm higher raise it + 4 for 550 rpm more or 6650 shift
In second it is 75 rpm for every point so + 7 for 525 rpm more or 6625 shift
In third it is 50 rpm per point so + 10 and 6600 shift

Just don't forget to raise you rpm limiter to 6800 or 6900 or you'll bang against it.

So basically you Hypertech shift setting will be +4 /+7 /+10

ws6_PR

but the hypertec dont raise more rev than 6600.

ws6_PR

what program need to buy for raise the rev 6800? thank for the help

ws6_PR

what program need to buy for raise the rev 6800? thanks for the help

mustgofasster

hp tuners of course

GA/TA

so i guess there is really no way to be sure other than to actually take the cam out an give a look?

nuzee

iTrader: (2)

An easier method would be to measure the lift at the valves. While you're under the valve covers, look at the valve springs. Chances are if you have aftermarket or yellow LS6 springs, then the cam has been upgraded.

GA/TA

thanks i'll be sure to look for that as soon as i get a chance thanks for everyones help.

BlueSix

Just go put the car on the dyno and see what it cranks out. You will be able to tell by the numbers and how high the cam pulls. If it starts flattening out around 5300 rpm then you have a stock cam, if it keeps pulling to 6200 ish then you have an LS6 cam.