Jerry Haas has built Pro Stocks and Pro Stock Trucks for the biggest names in the class. He has won the Car Craft All-Star Chassis Builder award a record 13 times. Jerry is an experienced racing also, having won the 1981 and 1984 AHRA Pro Stock World Championships. He has competed in NHRA Pro Stock and Pro Stock Truck as a driver and car owner. Address questions to chassis@racingnetsource.com.

I'm needing some tips and info on installing a straight axle on my '55. I'm planning to use a 4-inch drop single leaf spring with radius rods (old Ford style). I want the suspension to be able to accommodate a big block. Would it be possible to use coil-over shocks along with the single leaf if needed?

Thanks, Donnie

Donnie,
Coil-over shocks on a single leaf spring would be fine. I believe it will help support the weight of the car better. Set tow end 1/16-inch towed in (0 camber) 5-degree caster leaning spindle back. The big block should be no problem. Mounting correct engine height and engine angle to rear end. Make sure you install the axle straight with the car and center in the wheel well opening.

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