I have beat the piss out of the c-4 in my street car and its still going great. We run a c-4 behind a 428 that is putting out 600 rwhp in one race car and it holds up great. Granted it isnt a stock c-4 but it also takes a hell of a beating with a 5000 stall and 4.11 gears behind a torque making alcohol injected big block.
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90 LX Hatchback
306, AFR 165's 58cc, E303, 1.6 roller rockers, 70mm throttle body, cobra intake, bbk fenderwell, bbk longtubes, x-pipe, flowmasters, pullies, msd 6a, crane ps-92, stock MAF sensor, electric fan, No AC, No air pump, flaming river quick ratio rack
C-4, 3500 stall, 373's, aluminum driveshaft
SSM Lift bars, , sub frame connectors, strut tower brace
12.57 @105.12mph w/ 1.686 60ft before bbk longtubes (with equal shorties)
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86 tube chassis coupe - the trailor queen
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