Ok, *finally* found my post on the '68 Z test...
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It was done by SS&DI, Nov '68, and was the start of their "Project Camaro" series. Here's the run down...
Test: '68 Z/28, ordered with 4.30 posi, spoilers, M22, power disc brakes, and floor mats. Total cost: $3,686.55
- Heater assembly & AIR pump removed, due to the car being in an accident just prior to starting the project. Everything else was rebuilt as it was from the factory.
- It was given a general tune-up (points/valves checked, etc), rev box (set at 7600), set of Stewart Warner guages, and a 340hp Corvette distributor. Stock Wide Track GT Goodyears and stock exhaust manifolds are still in place...car is basically as it arrived from Chevrolet.
- car weighed 3165 with 12 gallons of fuel aboard.
- Very first run was a
[email protected], which proved to be the worst ET and MPH for the car that day.
- Valves run, new set of AC43s, car cooled down..it then runs a 13.99 @106.50, then a
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- Dropped air pressure in tires to 22psi, installed Champion J6J plugs, and timing reset to 40 degrees. Made 3 more passes, best of which was a
[email protected].
- Rejetted to 72/70-76 and new J63 plugs, and the car goes
[email protected].
- Installed Champion HO3 plugs, replaced air cleaner, let the car cool off, then went a best of
[email protected].
So, in a matter of a few hours, they managed to knock off 6 tenth just by fiddling with the car. And that's mid 13s with a pretty strong MPH, on the skinnies, and through the stock exhaust manifolds. Unfortunately, most people spend the few hours they *should be* tuning instead installing a set of headers or a bigger carb or...
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So, a respectable 13.6 @ 106+ from a few hours of tuning, granted, the car was heater delete, which *I believe* was doable on a '68, but adding a heater ain't gonna slow the car down a whole lot...and remember, this was on the stock Wide Track GT Goodyears and through stock exhaust manifolds!
