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ZL1 Chevelle Intake Swap - Six Shooter Shoot Out

We Put Barry Grant's Big Block 3x2 Setup To The Test On A Odern Zl-1.

By Barry Kluczyk

Finally, we were left wanting more from the instruction guide included with the kit. It's up to the installer to deal with the throttle cable/rod-to-carb linkage connection. It took more than a little time to modify the car's existing cable so that the connection allowed for wide-open throttle when needed.

Once the intake was installed, the linkage adjusted, and the timing set, it was back to the dyno where we were greeted by a foul smell and a 40hp loss. Yikes!

Of course, you'll have that when you, ahem, run the test car out of fuel on the dyno's rollers. Luckily, we were able to siphon some fuel out of Hardcore's racing supply and we were back to making full pulls.

Initial tests with the intake and no further tuning netted-surprise, surprise-a 3hp gain. But the air/fuel graph showed there was room for adjustment. Timing was adjusted to 38 and the engine responded with a noticeable gain. Final tuning adjustments delivered a total rear-wheel output of 358 hp and 376 lb-ft of torque. That's 15 more horses and 28 more lb-ft torque, or approximately 5 percent more horsepower and 8 percent more torque-not to shabby for a simple intake swap, we think.

The Six Shooter performed better than our initial expectations and definitely gives this big-block A-body a unique underhood appearance. This "shooter" hits the mark.

SOURCES
Barry Grant Inc.
1450 McDonald Road,
Dept. MMFF
Dahlonega
GA  30533
Price Engineering
Hardcore Racing
By Barry Kluczyk
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