Help!!! New cam, not much gain...
Help!!! New cam, not much gain... Now my mods are ms3 cam, pt4000, 3.42's, lid, hooker lt's, 3in duals, pro kit springs in front, v6 rear springs, cheapo stock replacement front shocks, stock 90K mile rear shocks and it's tuned.
The car made 375 unlocked and I can definetly feel the difference in the car now. It ran a 7.68 at 89.XX before the cam.
I made 2 runs yesterday and wasn't to happy with my times.
1st pass
1.63 60 ft
7.533
92.21
2nd pass
60ft didn't show
7.55
92.78
It feels good in the car but looks lazy on the launch on video. I know I need to play with my launch some more but something else seems wrong. Maybe the pro-kit and autozone shocks on the front hurting me?
The car made 375 unlocked and I can definetly feel the difference in the car now. It ran a 7.68 at 89.XX before the cam.
I made 2 runs yesterday and wasn't to happy with my times.
1st pass
1.63 60 ft
7.533
92.21
2nd pass
60ft didn't show
7.55
92.78
It feels good in the car but looks lazy on the launch on video. I know I need to play with my launch some more but something else seems wrong. Maybe the pro-kit and autozone shocks on the front hurting me?
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Originally Posted by SLPSS99
I shift my MS3 at 6900, the cam is a peak power cam, 64-6500 is not enough, and there will be a difference with that extra 4-500 rpm.
Dan
Dan
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The 60 isn't that bad.
What was the weather differance from when you ran those time?
question though. what v6 springs do you have cause 98 and up all have the same springs.
What was the weather differance from when you ran those time?
question though. what v6 springs do you have cause 98 and up all have the same springs.
You are going to have to really abuse your valvetrain to pick up your times. Shortshifting just won't do. Let that big cam rev. It wil help if you have a dyno sheet. You find out your gear ratios in each gear. Multiply everything to find your final drive ratio in each gear. You then overlay your torque graph to find out how much rear tire torque you put down at each rpm in each gear. You then figure your shift points by finding where your torque drop off causes the next gear to put more torque to the rear tires than the gear you are currently in. If the max torque rpm is less than redline, then shift-- if the max torque is over redline, then shift at your redline. The only problem with this formula is the difficulty in calculating actual tire diameter growth at high speed. This will change your final drive ratio calculations slightly as speed incrases.
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The 3.42's are a little weak for what you have if you ask me.
I have a mild to moderate cam going in (like 2,000-5600RPM power band(stock LT1 bottom end)) with 4.10's and a 3200 stall. Have been told by a lot of people its the perfect match. Cam is small but the car will scream because it all matches.
Might call TSP and ask them what they say. It could be anything thats wrong.
if the launch looks bad you might post it and see what the chassis guys say. bad launches hut the 60 foot.
With that being a high reving cam I would go with a sicker gear but I would not take my work for it and ask TSP.
I can't remember if their car had a 3.42 or 3.73
I agree with the others, if your not shift at peak power even a few hundred RPM lower it will hurt you quite a bit.
I have a mild to moderate cam going in (like 2,000-5600RPM power band(stock LT1 bottom end)) with 4.10's and a 3200 stall. Have been told by a lot of people its the perfect match. Cam is small but the car will scream because it all matches.
Might call TSP and ask them what they say. It could be anything thats wrong.
if the launch looks bad you might post it and see what the chassis guys say. bad launches hut the 60 foot.
With that being a high reving cam I would go with a sicker gear but I would not take my work for it and ask TSP.
I can't remember if their car had a 3.42 or 3.73
I agree with the others, if your not shift at peak power even a few hundred RPM lower it will hurt you quite a bit.
First off you don't judge a power gain by ET. ET shows traction. MPH shows power.
That being said you only gained 3 MPH and you said that you gained 80rwhp. Even with a worse DA I would think that you should have gained at least 5 mph. With an equalivent DA you should have gained around 8 mph.
That power is being lost somewhere.
Were you spinning? If the trans was holding well at the dyno then it "shouldn't" be slipping at the track. But you never know. Did you log the runs so that you can compare rpm to mph and see if the trans/converter are working right.
That being said you only gained 3 MPH and you said that you gained 80rwhp. Even with a worse DA I would think that you should have gained at least 5 mph. With an equalivent DA you should have gained around 8 mph.
That power is being lost somewhere.
Were you spinning? If the trans was holding well at the dyno then it "shouldn't" be slipping at the track. But you never know. Did you log the runs so that you can compare rpm to mph and see if the trans/converter are working right.
I expected more mph also but then again I didn't have much time to play with the car. I need to play with the launch and see if I can figure out anything there too. I didn't not log anything, I guess I need to start with that now.
Thanks guys
Thanks guys
