Pro Coil-Over Systems Update early GM muscle cars to modern coil-over front suspension with precise rebound and ride height adjustments. Kits include conical front coil springs, threaded body aluminum shocks, hardware and instructions. Offered in street and drag racing “R” series, choose the kit which best matches front end weight. Kit Series Street Series “R” Series Street Series “R” Series Street Series “R” Series Front End Weight 1701-1900 lbs. 1701-1900 lbs. 1901-2100 lbs. 1901-2100 lbs. 2101-2300 lbs. 2101-2300 lbs. Spring Rate 350 lbs. 350 lbs. 450 lbs. 450 lbs. 550 lbs. 550 lbs. Buick 1973-87, Regal QA1GS401-10350C QA1GR401-10350C QA1GS401-10450C QA1GR401-10450C QA1GS401-10550C QA1GR401-10550C 1964-67, Skylark/GS QA1GS501-10350A QA1GR501-10350A QA1GS501-10450A QA1GR501-10450A — — 1968-72, Skylark/GS QA1GS401-10350B QA1GR401-10350B QA1GS401-10450B QA1GR401-10450B QA1GS401-10550B QA1GR401-10550B 1975-79, Skylark/Apollo, QA1GS401-10350C QA1GR401-10350C QA1GS401-10450C QA1GR401-10450C QA1GS401-10550C QA1GR401-10550C Chevy 1967-69, Camaro QA1GS401-10350A QA1GR401-10350A QA1GS401-10450A QA1GR401-10450A QA1GS401-10550A QA1GR401-10550C 1970-81,Camaro QA1GS501-10350C* QA1GR501-10350C QA1GS501-10450C QA1GR501-10450C QA1GS501-10550C QA1GR501-10550C 1964-67, Chevelle QA1GS501-10350A QA1GR501-10350A QA1GS501-10450A QA1GR501-10450A — — 1968-72, Chevelle QA1GS401-10350B QA1GR401-10350B QA1GS401-10450B QA1GR401-10450B QA1GS401-10550B QA1GR401-10550B 1973-83, Chevelle QA1GS401-10350C QA1GR401-10350C QA1GS401-10450C QA1GR401-10450C QA1GS401-10550C QA1GR401-10550C Full Size, 1955-57 QA1GS501-10350A QA1GR501-10350A QA1GS501-10450A QA1GR501-10450A — — 1970-72, Monte Carlo QA1GS401-10350B QA1GR401-10350B QA1GS401-10450B QA1GR401-10450B QA1GS401-10550B QA1GR401-10550B 1973-88, Monte Carlo QA1GS401-10350C QA1GR401-10350C QA1GS401-10450C QA1GR401-10450C QA1GS401-10550C QA1GR401-10550C 1968-74, Nova/Chevy II QA1GS401-10350A QA1GR401-10350A QA1GS401-10450A QA1GR401-10450A QA1GS401-10550A QA1GR401-10550A 1975-79, Nova/Chevy II QA1GS401-10350C QA1GR401-10350C QA1GS401-10450C QA1GR401-10450C QA1GS401-10550C QA1GR401-10550C 1982-04, S-10/S-15 2WD QA1GS401-10350C QA1GR401-10350C QA1GS401-10450C QA1GR401-10450C QA1GS401-10550C QA1GR401-10550C Oldsmobile 1964-67, Cutlass/442 QA1GS501-10350A QA1GR501-10350A QA1GS501-10450A QA1GR501-10450A — — 1968-72, Cutlass/442 QA1GS401-10350B QA1GR401-10350B QA1GS401-10450B QA1GR401-10450B QA1GS401-10550B QA1GR401-10550B 1973-88, Cutlass/442 QA1GS401-10350C QA1GR401-10350C QA1GS401-10450C QA1GR401-10450C QA1GS401-10550C QA1GR401-10550C 1973-74, Omega QA1GS401-10350A QA1GR401-10350A QA1GS401-10450A QA1GR401-10450A QA1GS401-10550A QA1GR401-10550A 1975-79, Omega QA1GS401-10350C QA1GR401-10350C QA1GS401-10450C QA1GR401-10450C QA1GS401-10550C QA1GR401-10550C Pontiac 1967-69, Firebird QA1GS401-10350A QA1GR401-10350A QA1GS401-10450A QA1GR401-10450A QA1GS401-10550A QA1GR401-10550A 1970-81, Firebird QA1GS501-10350C* QA1GR501-10350C QA1GS501-10450C QA1GR501-10450C QA1GS501-10550C QA1GR501-10550C 1964-67, Lemans/GTO QA1GS501-10350A QA1GR501-10350A QA1GS501-10450A QA1GR501-10450A — — 1968-72, Lemans/GTO QA1GS401-10350B QA1GR401-10350B QA1GS401-10450B QA1GR401-10450B QA1GS401-10550B QA1GR401-10550B 1973-87, Lemans QA1GS401-10350C QA1GR401-10350C QA1GS401-10450C QA1GR401-10450C QA1GS401-10550C QA1GR401-10550C 1974-77, Ventura/GTO QA1GS401-10350C QA1GR401-10350C QA1GS401-10450C QA1GR401-10450C QA1GS401-10550C QA1GR401-10550C * System with double adjustable shock absorbers also available, substitute QA1GD501-10350C.
GM Street And Race Control Arms Tubular steel control arms reduce unsprung weight and improve handling characteristics. Street control arms have polyurethane bushings and OEM- style ball joints, while Race versions use low friction, low deflection bushings and
Pro-Rear Systems
low friction ball joints. Upper control arms include offset cross shafts for eased camber adjustment. Sold in pairs with necessary hardware. Upper Lower Control Arms Control Arms Description Part No. Part No. Street Control Arms 1967-69, GM F-Body, 1968-74 X-Body QA152417 QA152419 1964-7, GM A-Body QA152422 QA152437 1982-04, S-10/S-15 QA152467 QA152466 Race Control Arms 1967-69, GM F-Body, 1968-74 X-Body QA152317 QA152319 1970-81 GM F-Body QA152318 QA152320 1964-72 GM A-Body QA152322 QA152337 1978-88 GM G-Body QA152365 QA152364 Note: Although primarily intended for use with QA1 Pro Coil-Over Systems, control arms may be used with conventional coil springs with the purchase of bolt-in coil spring adapters, offered separately and listed below.
A complete rear coil-over conversion kit, the Pro-Rear System is versatile, lightweight and durable. Suited to drag racing or street applications, custom mount, weld-in kit includes lightweight aluminum, single adjustable coil-over shock absorbers, choice of linear or variable rate coil-over springs, shock crossmember, mounting brackets and all required hardware.
1100-1300 lbs. Part No.
1301-1500 lbs. Part No.
1501-1700 lbs. Part No.
Description
Rear End Weight Pro-Rear System, Linear Springs
QA1DS501-12110
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Pro-Rear System, Variable Springs QA1DS501-12100V QA1DS501-12130V QA1DS501-12175V
Coil Spring Adapters Specialized adapters bolt direct into QA1 tubular lower control arms and allow use of a stock-style coil spring. Part No. Description QA17720-168 Coil Spring Adapter, 1964-72 GM A-Body, 1967-69 GM F-Body, 1968-79 GM X-Body QA17720-203 Coil Spring Adapter, 1973-77 GM A-Body, 1978-88 GM G-Body, 1970-81 GM F-Body, 1982-04 S-10
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