Elec87

iTrader: (49)

okay guys I just installed a new cam and had the car tuned... it runs well and sounds aggresive but does not seem to go much faster at the track... Any input would be awesome... here is a run down of the car...

stock head 5.7
lunati 237/242 .595/.595 114
Headers
2otl
ls6 intake
Underdrive pulley
ported tb
a4
4000 vig
3.23 gears
all runs on Mickey drag radials
Runs after cam on a unprepped track (hangover fest)
12.44 @ 109
Before cam
12.66 @ 107 On a well prepped track

The mph sucks and does not seem right for a car with a cam such as this.
Both 60's are high 1.7's... I am just bummed as I expected a better mph but I guess I will give it one more shot when opening day comes on a prepped track...

But 2 mph and 2 tenths seems pretty bad in this application any input It just seems like the car is not making any power.

Steve Burger

iTrader: (33)

What was the last cam? That doesn't seem too bad.

Elec87

iTrader: (49)

The car was a stock cam car.... It went 12.66 mith the same mods at 107.... Just thought I would get so much more from the cam swap.

STL2SLO

iTrader: (1)

Get a tune.

nick_4.8sierra

iTrader: (2)

Read his post

BAIN

iTrader: (5)

How was the weather on the runs with the cam compared to before runs without the cam? To get a true idea what you picked up you need to compare the corrected time before and after with the DA corrected to 0'. Whay were the 60's before and after? Also how much power did you pick up with the cam on the dyno? That size cam may have changed the low-end quite a bit and a lower gear or larger converter might be needed to get it off the line.

Magnet

iTrader: (36)

im not going to lie that seems quite slow for the 60' ...you should be in the 11's with that cam and a 1.7 60'

Old Geezer

iTrader: (3)

11 sec cam, and 12 sec heads???

RaNsOm

iTrader: (2)

241's are 11 second heads

See Sig

11SECSS

iTrader: (199)

I say your tune is off you should be much faster what about your 330ft and 1/8 times do you have them.

Elec87

iTrader: (49)

That 60 is a tad off but my other is pretty much dead nuts

T6Rocket

You gained 2.4 MPH in the 1/8th, that's not too bad!

Al

Demonicbird00

iTrader: (17)

something is wrong w/ the tune, if you gained 2.5 mph in the 1/8, you shoulda been at least at a 110mph. you should be in the 11s for sure. whats the elevation??? that could be another problem too.

and btw stock heads "853s" will go 11s theres only about a 5-7rwhp differance between the 853s and the 241s

-brandon

HaulinHawk

Shift points? I picked up 4-5 mph playin with my shift points and switchin to some bigs n littles/mt radials.

Elec87

iTrader: (49)

The car is on big and littles.... I must also say this was a 40 degree day at the track vs a 65 day. If that makes any difference.

Pro Stock John

iTrader: (34)

MPH sucks, either something is wrong (trans slipping) or you are not making that much more power.

Elec87

iTrader: (49)

The mph is horrible, I wonder what the deal with this thing is.

Vintage Iron55

Meerly shifting the rpm band up without allowing the motor to see those rpms will limit the results. My 4 speed 283 car takes forever to bring up the rpms with street gears. Adding duration to increase rpm and kill off even more low end torque yeilds only a slight improvement in et and almost no improvement in MPH. Gear deep, leave High, Night and day. My case will be far more magnified than would yours. Those M/Ts are sticky. A good converter would be very beneficial to keep the car at least above the bottom of the power curve. I am gussing your car really comes on the power at around 3000rpm? A good set of 3.70s or 4.11s might be nice too.

I love the way the F-body community shares Ideas, experiences and information freely with each other. This is a great forum.

Henry

Elec87

iTrader: (49)

Great input... Thanks

HaulinHawk

Adding 4.10s ,4000 stall,6800rpm shift points ,1.520 60fts and bigs n littles dropped me to a 11.50@117.09.previous best with 3.23,3800 stall,6550 shift points 1.65 60fts on stock 17s with mt radials was a 12.1@112.You need to tweak your setup and find out what its gonna respond too,i would also check the tune.