I have never ran D/R's, but from what i have heard they dont like to be shocked like a slick does, they work better when progressively loaded.
more preload = harder hit
Also top hole hits harder than bottom is what i have been told.
Rear leaf springs
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Re: Rear leaf springs
3100 lb N/A SBC 8.81 @ 152 http://www.youtube.com/watch?v=wkww0xwoZXE
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Re: Rear leaf springs
I'd say your biggest problem is the shocks and your gear ratio. With the turbo 350 and the 4.11 rear gear, you have a 10.35 ratio off the line (assuming you have a stock gear set) . That's a lot of gear and hit for the 275. Fwiw I have mine in the top hole also with a 1/4 turn of preload. I've never tried them anywhere else to be honest.
Re: Rear leaf springs
Thanks for all the replies! Great advice. O.K. never got to the scales, but I did start to soften the springs and with one side done I could see that I was not going to have enough upward shock travel so....... did not do it. While I was under the car I could hear the rear poly shackle bushings binding, so I backed off the the bolts and nuts just a fuzz. Left the shock alone, put 16lb in the tires went to the track....WOW,WOW,WOW! first run was best ever at this track. 7.090 in the1/8 then went 7.031 next run! run two 7.081 and two 7.063 this is the most consistant it has eveer been. The only fly in the ointment is what a couple of you told me could happen, I had tire shake on two runs...never had this before. It was violent! Looks like I need to buy better skocks. Thanks again for the ideas. John. P.S. Did not find a 6.xxx to day but what an improvment.
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