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a little update, I went to the track Saturday and did some test and tune. Started off with 65primary and 68 secondarys. Put the soft white spring in, seemed to help a little. Went up to 76 primary's and 78 secondary's. Truck is much happier, got back up to 75 MPH. Plugs are starting...

Thank you. The street class has been alot of fun for me regardless of how slow the pick up is. (I won the class last year). The series I'm running in has a race about once or twice a month, next being may 3rd. My work is located on a nice 1/4 mile stretch in an industrial park so I get plenty...

Ive found the best method is going up on the brake to around 1000 and letting it go from there. Im not "concerned" with my 60ft times, but its is an indication of the bogging issue. I don't mind coming out slow and picking it up on the top end. Im shifting right around 5k give or take...

The truck was not built or intended for racing. I have much faster vehicles that I run in other classes. But for the street tire class im having a lot of fun messing with the pickup. Which by the way started last year at a staggering 10.54 at 67MPH! So ive made progress! SO, it turns out...

Ya know, I honestly am not sure what was on it, I thought it was a 600 but could be mistaken. I will have to double check now. Do you think a 670 is not enough of a carb for the 400?

I do have a timing light. I just haven't checked it since ive played with it at the track. I had initial timing at around 14* last I checked. But have changed it since. I will start by changing the secondary springs to lighter ones to see if opening sooner helps. Thank you for your help...

Thank you for the suggestions! I actually went the other way with the springs with no positive results so i will be trying lighter springs next. I read somewhere that they were opening too soon, but the more i think about it you may be right. The accelerator nozzle is a 31. And i found...

So, not an A body but still a mopar. Ive been racing my pick up for the past year with the eddy on it and tuned it the best I could. Truck went a best of 9.74 at 76MPH in the 1/8th. It always had a terrible BOG off the light. 2.45 60FT best ever. Usually consistent 2.48-2.5. Now...