The soft rear spring idea does work great on 12 sec trucks. All the intense suspension talk is not necessary for everyone. My friend and I built his 71 Chevy Longbed on a budget with the dish cast piston .040 over 350 block still in it since he bought it. The motor is 9.3:1 or so with ported double hump 2.02/1.6 heads. victor jr, 650 double pumper,Hei-MSD 6AL,hooker 1-5/8,.480"hyd cam 230@.050"Lunati,10"TCI,TH350, 12 bolt posi 4.88,15x8 welds 28x11.5 dryrotted used slicks NOT TUBBED, STOCK OLD SUSPENSION with much lighter 72 ElCamino rear springs cut for ride height. It has weight reduction like harwood hood ,lexan windows no bumpers,racing bucket seats. battery and fuel cell in rear of bed. It runs 8.12-8.13's in the eighth with 1.69-1.70 sixty foots. translates to 12.7 ish quarter. It squats off the line and leaves real hard but levels off after that. My truck is a 84 S10 with only slapper bars tightly adjusted again my original leaf spring(took out all other leaves) my motor is a mild 406 and I run 11.6's (7.37 eighth) with 1.59 60 fts. I pull the wheels a little and my ass end is soft and squats off the line although my travel is only a few inches. Trucks can hook hard and run fast without fancy expensive redesigned suspension. THESE SUSPENSION MODS ARE ALMOST FREE.
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