Headers on SBC 350

[e4cutler]

Had an exhaust leak on the jeep so I pulled the headers to change out the gasket and found the port on the header was oval while the port on the motor was square. I measured the ports on both and the header port is 1/8" narrow than the motor port left to right and 1/16" narrow when measured from top to bottom. The new gaskets are aluminum and made for square ports. My question is if I run these headers, is there a possibility of damaging the motor since exhaust flow won't be perfect? I know i could experience a loss of power but I'm more worried about potential damage. Thanks for info you can offer me!

 

[417chevy]

Might be a possibility of burning up a valve but id say it would be slim


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[muddinmetal]

Had an exhaust leak on the jeep so I pulled the headers to change out the gasket and found the port on the header was oval while the port on the motor was square. I measured the ports on both and the header port is 1/8" narrow than the motor port left to right and 1/16" narrow when measured from top to bottom. The new gaskets are aluminum and made for square ports. My question is if I run these headers, is there a possibility of damaging the motor since exhaust flow won't be perfect? I know i could experience a loss of power but I'm more worried about potential damage. Thanks for info you can offer me!

This is the standard set up on every vehicle ever made with $150 headers, all of them, you're fine

 

[kushKrawlin]

Mine are something like that. From what I read it's all good. Weird. And for Exhaust leak I recomend vise grips and c clamps to hold the collector. It doubles as a convo piece. :****:

 

[e4cutler]

Thanks for the help guys! Got them on and it sounds so much better than before!