Thread: 8AN, 1/2 inch fuel line
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Old 11-06-2006, 03:12 PM
Jim Vander Wal Jim Vander Wal is offline
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Join Date: Sep 2002
Location: Grand Rapids, MI
Cobra Make, Engine: FFR Challenge Car, RDI aluminum 427w
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Greg,

I run a similar engine, RDI 427W (444 rwhp). I have an isolated system fuel pressure gauge in the cockpit and haven't seen any indication of fuel pressure falloff or starvation on the dyno, track or strip.

Mechanical pump, ProSystems 780cfm Holley HP, Vic Jr manifold and heads.

This combination runs to 155mph (checked via GPS), 11.8 / 120mph quarters and will hold 6k rpm w/o faltering.

I have also looked into 1/2" line but associates that know way more than I do don't think it's necessary.

Now that you have changed it was it difficult? Anything in particular that compelled you to make the change?

Jim
SPF 1855 in Grand Rapids, MI
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