[gjn]

I would try what he suggests and see if it helps. Try from idle and a range of RPMs too and see what works best for your car. With my old converter 2.4k stall (from idle) would onlys stall at 2k if I brought it up to the point of breaking the tires loose. With my new converter, I don't hook well enough to tell any difference.

I paid $600 for the carb. I like it; however, my exhaust 1 5/8 headers and 2.5" exhaust are limiting my RPM at 5,300. Once I jump up to 1.75 headers and 3" exhaust with x-pipe, I should pick up 200 to 300 RPMs and believe the 800 will really shine. Its really a 780 HP body with downleg booster (XC series). I really like Patric James of Pro-Systems; he is super accessable and will always call you back. Great Customer service.

If your running slicks or ET streets, I would suggest having the tire pressure to where you get the best footprint as I have stated earlier. If you do this and you are not spinning the tires at all, you can always try to raise the pressure in 1 lb increments until you start to break them loose again.

[gjn]

Forgot to mention, how much smoother the car idles and starts with the four corner idle circuit.

[78T/A462]

What I mean by the driveline binding up is that the preload is set to tight and the pinion angle is way off. Just talked to another friend of mine that races super stock and he had the same problem with his car binding. He was doing 1.75 60ft's. After that he set the suspension up a lot looser and got the 60ft down to a 1.61. Im hoping that adjusting the preload will fre up the car and help it run the way it did before the slide a links but with better traction now. If I can get the car to run the way it use to by loosening up the preload, I will almost guarentee an 11.99. Do you see what im talking about as far as binding? What do you think?

[gjn]

Yes, I see how it could happen as far as binding. I am interested to see what you run. With the slide a links and and the tire pressure I think you will cut an easy tenth or two off your 60' (depending on how hard you are spinning now).

[78T/A462]

The car really doesn't feel like it's spinning at all, but Im going to get shoe polish and paint 1 stripe down the slick that way it will be easier to see if it is spinning or not. Let's here an estimate of what you think my 60ft and my et will be. At the track I will be trying an 840cfm mechanical secondary carb, 2 inch open spacer, total timing of 38 instead of 36, slide a links and lighter advance springs in the distributor. Im going to try all these things, 1 thing at a time. Guesstimates for my 400 on et's and 60 ft's?

[78T/A462]

Dave also suggested short shifting. 5000 rpm shift into second and 5500 into 3rd. Have you tried this before? Did it help your et's or 60fts?

[gjn]

I would shift at the same RPM. The engine will make peak power at the same spot regardless of what gear you are in (in my opinion). Plus, if you shift out of first gear faster you will lose the gear multiplication sooner. 1st has more multiplication than second which has more than third. But, you can always give it a try to see what happens. As far as short shifting, yes I did pick up. Originally, I shifted at 5k then 5.6k and then 5.3k and found 5.3k to be the best.

As far as how much you will improve, its really hard to say. If you are spinning the first 20' and are now hooking, you will run 2 tenths faster in the 60'. If you are spinning the first 10' and now hook you will pick up about a tenth. What RPM does your converter flash to during launch at the strip?

[78T/A462]

My converter flashes around 3900-4100rpm at the track.

[gjn]

What shocks did you run on the front prior to installing the 90/10s? What tires are you running ET streets right?

[78T/A462]

The shocks I ran prior were the stock shocks. I also run 28x12.5 et street slicks. What cam do you run? Do you run roller rockers? Distributor? What carb did you have on it before?

[screamingchief]

Hey Alvin,intresting to hear you got another opinion on that issue with the slide-a-links and that my thoughts were'nt entirely missplaced on the preload/pinion angle issue.Its nice to know that you found somebody who's experienced with those bars in particular as most all my personal experience was with either the cal-tracs,southside machine bars,or slapper bars.Hope you get it sorted out and runs as you hope.Keep us informed on how it works out.

[78T/A462]

Ya, I thought for a while there that I wasn't going to get any responses but my good man GJN has helped me out quite a bit.
Bret, did the head deal go okay yesterday? Have a safe trip.

[screamingchief]

Yep everything went well nice guy too,though I was running around like a mad man yesterday doing a bunch of last minute stuff and all.I'll get back in touch when I get back in town,if you need to get in touch call(I have my cell with me) or e-mail me I have my laptop and I'll keep an eye on my email.Good luck Alvin!

[gjn]

I would be shocked if you weren't spinning really bad running with that much converter with stock suspension. Once you figure out the slide a links along with tire pressure and the 90/10's you will pick up a tenth or two in the 60'. I run the Comp 274XE, with the comp 1.52 magnum roller tipped rockers, MSD billet distributor. I was running a marine 4777 holley 650 dp that looked like it had set at the bottow of a pond for a decade or two.

[gjn]

Any updates?

[78T/A462]

I sent you an email.

[JoePapa]

Have you tried an adjustable drag shock on the rear? That may be helpful too if you haven't done so.

[78T/A462]

I haven't tried adjustable rear shocks yet. I have the gabriel shocks in rear. These shocks are supposed to be preset to 50/50. What else do you suggest?

[JoePapa]

The 50/50's are probably fine but I'm still learning in this area. I put the CE adjustable's on the back of my car and they made a difference in the way the car felt upon launch but I don't have any video of the launch since this change. I recently pulled my best 60' ever of 1.64 (since the shock upgrade). I'll be trying to get that 60' more consistently now.

[78T/A462]

JoePapa,are you running any slapper bars? What kind? What are your front shocks set at? How do you launch?