Fuel Line Size
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Car: 90 454SS
Engine: 454 TBI
Transmission: TH400
Fuel Line Size
Could differences in fuel line size cause fluctuations in fuel flow (but notl enough to not indicate pressure fluctuations)?
I have the stock fuel line to the filter and then I have -8 AN from the filter to the inlet of the TB.
I have the stock fuel line to the filter and then I have -8 AN from the filter to the inlet of the TB.
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Joined: Aug 2004
Posts: 23
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From: Hattiesburg, MS
Car: 1990 454SS
Engine: 489
Transmission: TH400
I think any flow fluctuations would smooth out by the time they reach the filter. That's about 4 feet isn't it. Couldn't be any worse than elbows in the line.
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Joined: Oct 1999
Posts: 6,621
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Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
I'd say you're biggest concern are the internal passages on the TBI itself. -6 line for supply and return should be plenty so long as your pump is healthy.
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