Problem cutting a light

[russellauto1]

No street driving. Engine has no power above 5250 rpm and I go through at 5500 in 1/4 mile. Thats with a 4 spd automatic. Every one has given me some great ideas. Thanks for the help.

I don't know about the slack in the cable. But maybe I need to mess with the eccentric the cable sits in. The gas pedal has alot of travel also. Any body else have any expierence with a slow moving accelerator pedal?

[njk53]

There were a lot of good suggestions on this thread. Let us know if anything helps.

Also, a 4.56 gear seems a bit short. I would think a taller gear in the 5.00/5.13 range would help also. I think that small block of yours would like a taller gear.

[GUMP]

Originally Posted by njk53

Also, a 4.56 gear seems a bit short. I would think a taller gear in the 5.00/5.13 range would help also. I think that small block of yours would like a taller gear.

This is a Pure Stocker. In this form the LT1 makes power to about 5200. It doesn't need more gear. In fact, I think it would do way better with the taller tire that I suggested.

A few years back, I built a Stocker using a stock LT1 with some High School kids doing the work. It eventually ran 7.05 in the 1/8th mile!

[njk53]

Out of curiosity, what were your 60 foot times?

[GUMP]

Originally Posted by njk53

Out of curiosity, what were your 60 foot times?

Our best was a 1.41.

[Rich Biebel]

My LT-1 Stocker ran pretty fast with a 4.56 gear.

I changed it to a 4.88 and it did not go faster. Just pushed the rpm up.

One of the best runs I ever made was shifting out of low gear a good 1000rpm lower than normal. The car went up in the air pretty high and I was manually shifting it.......just pushed the shifter before the shift light went on.......

60' times were down in the lower 1.30's back then in good air...

[ss3011]

It may like a steeper gear, if the transmission will make a WOT 3-4 shift. Sounds like you go though the traps in third gear. This would give you more starting line ratio, which might help your reaction time.

If you are still using the stock ECM, make sure you raise or disable the MPH limit .

[russellauto1]

It Goes through the traps in 4th gear. Rich you may be on to something. I let the transmission shift itself for the 1-2 shift. I think the trans may be shifting as the front of the car is raising from the higher stall speed.As in, as soon as I hit the throttle on the starting line, it shifts gears because of the WOT shift points with the stock governor are 4500 rpm. I put that governor in there because It likes to get out of first gear ASAP. I did not think it would shift that fast though. I am going to try and shift it manually out of first gear and see if that helps. Sounds like this is self-inflicted....... Thanks Guys, I will let you all know how it works.

[Mark Yacavone]

Some factory stock ECMs will retard timing when going to the floor off the line. Also on the shifts.
Ed Wright could tell you more about this.

[GUMP]

Originally Posted by russellauto1

As in, as soon as I hit the throttle on the starting line, it shifts gears because of the WOT shift points with the stock governor are 4500 rpm.

Fix this and the car will pick up a bunch.

I am assuming that you are still running the stock cam?