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gjn · 05-10-2005, 07:45 PM

I can't imagine you could get the pinion angle that far out of whack to actually cause the car to slow down. However, that is out of my realm of knowledge. But, I would be suprised if you could. When you say slow, do you mean a hesitation or slow through the whole gear? If it is a hesitation its your accelerator pump curcuit running lean. If it just feels lazy, you maybe running lean/rich. Has the air temperature gotten hotter/coulder lately? If so, this can cause your car to run rich/lean. What do your plugs look like?

78T/A462 · 05-10-2005, 07:49 PM

The plugs have a bronze burn. The weather here lately has been very humid. It isn't in the carb. It is slow from launch to shift point through all the gears.

gjn · 05-10-2005, 07:51 PM

Slightly lean is not a big issue; however, you can burn a motor up if you are really running lean. Check the plugs and see what they look like and go to the Pontiac Dudes website and see how they compare to the posted pics. 84 square seems to be pretty healthy (rich). I run 76 to 78 front and 86 to 88 back (but, I also run a power valve).

gjn · 05-10-2005, 07:54 PM

Bronze is good. Try to run the car hard and shut it down quickly and pull the plugs and read again. You may need new plugs? Humidity hurts power. At our track in Kansas City during the summer at grudge night, you always run your best time at dusk. After that, the humidity shoots up and you slow down a tenth.

78T/A462 · 05-10-2005, 07:56 PM

What kind 60ft will I need to produce to run an 11.99? How much better than a 1.85 will I need?

gjn · 05-10-2005, 07:56 PM

http://pontiacdude.cc/

Here is the Dude's site. Enter and run down the right side of the page and you will see the link about reading spark plugs.

gjn · 05-10-2005, 08:01 PM

Well, I ran a best 12.002 @ 112.0 with a all time best 60' of 1.726. I now run consistently in the 1.73 to 1.74 range, but I spin about 8 to 10 ft. Depending on what you pick up in MPH with the new carb, I would guess you would need to be in the high to mid 1.6s.

78T/A462 · 05-10-2005, 08:08 PM

Thanks for the help. Im going for some test runs tomorrow and im going to take some plug readings. So giving the car full throttle and then shuting it off will not hurt the motor? Thanks for everything. I guess we will find out at the track. One last question, do you think with what I have I can pull a high 1.6 60ft? Thanks

gjn · 05-10-2005, 08:11 PM

I don't know how much you have been to the track, but unless your really lucky or just plain good. There is alot to tune. Here is a post of my car, if you go to the bottom you can and click the link you will see how I tuned my car from a 13.65 slug to a 12.002 respectable car. I tried everything from playing with shift points, to timing, to jetting, different carbs, etc, etc, etc. I picked up a tenth here and there and so on.
http://www.pontiacstreetperformance....d455GregN.html

gjn · 05-10-2005, 08:18 PM

A lot of guys I know do it, run hard and turn the key off. Personally, I don't have the balls. I run it hard to 60 or so and pull over ASAP and kill the motor.

With as much stall as you are running, I think it is possible for you to trim a tenth to tenth and a half off your 60' (you might get even more). First, work on finding the right tire pressure to get the tires to feather to the edges. I bet your spinning pretty hard. Then adjust the slide a links, next put on the new carb. You may have to adjust the accelerator pump curcuit once you are hooking well. Then start playing with shift points/timing etc. Do one at a time or you don't know what worked. You can also take off your power steering belt and pick up a tenth.

78T/A462 · 05-11-2005, 01:27 PM

I checked the plugs and the color on the strap on the plug doesn't change until the strap gets to the welded part. According to Pontiac Dudes site the plug is to hot of a plug. So im guessing I need a colder plug that way the mark is even bewteen the base and the tip of the strap. What do you think.

78T/A462 · 05-11-2005, 01:36 PM

The car pulls past 6000 but beings that im still running stock rods I limit my shifting at 6000. I chnged the springs in the distributor for the advance. I used the lightest spring that came with my distributor and man it made a big difference, but there still is that binding. Im going to do the preload saturday. What kind of spark plugs do you run? I have r45s delco's. I would like to try the NGK5670-8. What do you think?

gjn · 05-11-2005, 03:45 PM

I agree with your shift point; not going above 6k. Try dropping by 200 rpms at and see if you pick up any mph, if not go back to 6k.

I run the AC Delco R43S in mine and the strap is right in the middle. I would try that or the comparable NGK plug.

On the advance, just make sure its not pinging. I can't imagine it would with as much stall as you are running.

Binding, I am not sure what you mean. I would probably have to feel it to understand it. When you put in the slide a links did you remove your driveshaft? If so, did you torque the U-bolt down to specs? Are the U-Joints in good shape?

grandville455 · 05-11-2005, 03:52 PM

You can also take off your power steering belt and pick up a tenth.

GJN....Can you really trim a tenth just by doing that?

gjn · 05-11-2005, 03:59 PM

Grandville,

A buddy told me this (experienced racer) so I tried it the other night. I was running 12.15s and took off my belt and ran about 1 hour later and ran another 12.15. 15 minutes after that (with the belt back) I ran a 12.25 with no other changes. I think the humidity kick up like it always does as the evening progress which would explain why I ran the same time with the belt off and then lost a tenth with it back on. I am going to try again Friday night and I will let you know.

gjn · 05-11-2005, 04:06 PM

Grandville,

I reviewed my time slips and I did 60' worse after I put the belt back. I will try to do it again Friday night with consistent 60' times and let you know. I will say that it sucked staging, but I liked it better on the big end without the powersteering. I run ET Streets with radials on the front and it seemed to help me from not over compensating.

78T/A462 · 05-11-2005, 04:36 PM

I didn't remove the driveshaft when I installed the slide a links. Everything was torqued to the right specifications.

78T/A462 · 05-11-2005, 04:46 PM

I don't hear any pinging but then again detonation is not always audible. What rpm are you launching at?

gjn · 05-11-2005, 04:50 PM

I launch at idle and the converter will flash to 3,300. I am going to try and launch at 1,400 Friday night a couple of times to see if I pick up any in the 60. How about yourself?

78T/A462 · 05-11-2005, 06:12 PM

I launch around 1200-1600. A guy that's helping me out with different tips righ tnow from the forum says that if I stall the car as high as it will go without breaking the tires loose that it will stall 500-600rpm higher. Im going to try that. He also said to run 25-30lbs of air in the slicks and that will help my et also. How does that prosystems 800 work? How much did you pay?

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