criticalx

96 trans am, a4, 3.23, cc305 cam, tci 3000 stall, long tube headers, y pipe , flow master.. run a 8.1375 @84 1/8 mile untuned.. I just paid pcmforless mail order got send pcm to them now.. what gains should I get from a tune?

ahritchie

iTrader: (1)

Probably 15-20hp...maybe more, they can change the shift points/rev limiter too for even more gains on the strip. What RPM was it shifting at?

criticalx

it shifts at 5800-5900.. what would be good shift points with this cam? I need to get down to 7.900... do u think tune help get me there?

IDriveChevy

iTrader: (5)

What was your 60'? I ran 8 flat @ 80 with an intake/exhaust suspension 3600 stall car with a 1.66 60'. The car probably has a lot more in it with a good dyno tune, I picked up like 40 horse with a nice tune

ahritchie

iTrader: (1)

Let the tuner decide, just give them your cam specs, that's their job....I would assume 500 rpm or so over the RPM the cam peaks at: 5500, so probably 6000-6100 range while also raising the rev limiter to 6200+...you got roller rockers and upgraded springs? You probably need them to turn more RPM or you get valve float with weak LT1 factory springs, and 1.6 rockers are a proven 15+hp gain. Once you get the tune in order, I think that goal is attainable.

criticalx

guy that done heads put some springs in them. he said he set them for 550 lift.. I want some 1.6 roller rockers. think it be ok to run them? gains?. sixty foot was 1.77

ahritchie

iTrader: (1)

Yes, do it....just don't buy cheap ones....trust me on this.

criticalx

thinking but swaping my gears to 3.73( done have gears) and getting a cut out.. what gains would I get out of these?

ahritchie

iTrader: (1)

Probably at least 2-3 tenths....maybe 5-10hp with a cutout, you have to get it tuned for the gears obviously, so best to let the tuner know when you mail the PCM off. You got some sticky DR's? Get those and some boxed/tubular control arms to eliminate axle hop and really take some time off your ET.

criticalx

yes I have new DR's.. i sent pcm off today got to thinking.. i got pull axles to fix a couple studs. may as well change gears seeing i already have be in there.. as far as cut outs from what i read flowmaster sucks and cut out would be a cheap way to fix that.. i got cut a few tenths my brother beat me with his Camaro.. with 7.969 @ 86.6

criticalx

so here what I have done to car going to track next week..

pcmforless tune
3.73 gears
tb bypass
front sway bay removed
umi lca
swapped my front wheels from 18 to 17 in ones
3 in cut out (remember I have flowmaster)
60lbs diet

how much gain should this get me?
7.8 maybe?

TravisMcGill2000

iTrader: (2)

7.8s should be do able. When u did the tune. You did have it tuned for the 3.73s. Right? Also what was ur 60ft in the 8.1 pass

TravisMcGill2000

iTrader: (2)

Just seem the 1.77 60ft. You have atleast a th in the 60ft alone. Was is spinning any?

criticalx

yes.. he tuned for 3.73. no. spinning I could tell with the 1.77 60ft.
im hoping gears, sway bar and lca will help 60ft