Follow the firing order room permitting for tube location into collector
As for making them equal length.. lots of opinions but those who have dynoed this will tell you 99% of combos wont care one way pr the other
The tubing size, and more importantly using a long smooth bend radius off the heads and in turns has a far greater impact on flow and power than anything else ..
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Custom Cam /Engine Dyno and Spintron Operator at Brian Tooley Racing R@D
84 Mustang/Hertz Rent-a-Car
438CI 5.58@123 8.80@147 On Radials ALL MOTOR
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68 NOVA 396-375 HP F.A.S.T. Project
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