That should be plenty. I believe you can use 3/8 (-6) up to around 700 hp
Fuel line size
I am upgrading the motor in my 71 Nova to a 580ish HP SB 427. The builder has a mechanical 6 vane high volume fuel pump with -8an line going to carb that i am probably going to get with the motor. I have the stock tank with -6 fuel lines going to the carb now, would that be enough to support this engine? Not planning on racing the car.
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Just be sure to use a good regulator set at whatever carb you're running max bowl inlet.I am upgrading the motor in my 71 Nova to a 580ish HP SB 427. The builder has a mechanical 6 vane high volume fuel pump with -8an line going to carb that i am probably going to get with the motor. I have the stock tank with -6 fuel lines going to the carb now, would that be enough to support this engine? Not planning on racing the car.
Just be sure to use a good regulator set at whatever carb you're running max bowl inlet.
Fuel tank vent should be minimum 3/8" I.D. Stock fuel tank vent is 1/4" I.D.I am upgrading the motor in my 71 Nova to a 580ish HP SB 427. The builder has a mechanical 6 vane high volume fuel pump with -8an line going to carb that i am probably going to get with the motor. I have the stock tank with -6 fuel lines going to the carb now, would that be enough to support this engine? Not planning on racing the car.
Yes no problem. Ernie.I am upgrading the motor in my 71 Nova to a 580ish HP SB 427. The builder has a mechanical 6 vane high volume fuel pump with -8an line going to carb that i am probably going to get with the motor. I have the stock tank with -6 fuel lines going to the carb now, would that be enough to support this engine? Not planning on racing the car.
Thanks for the replies, I appreciate the help.
I wouldn’t worry about it.
I have a 421 in my 66 that is just a touch over 600hp at the crank. I run a 3/8 line from the sender to the carb. Holley blue electric pump. I’ve had no issues. I’ve made a few dyno pulls that were probably 15 seconds long or better with no fuel starvation issues. And a bunch of mid 10 second passes at the strip.
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