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Stock b6 rail = more fuel flow than you would ever need on those 460s.

 

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You want to anodize the inside of the rail?

I'll second the fact that the stock rail is perfectly adequate and even the several production aftermarket rails are overkill for 460's. There are many hi-powered B6 engines on the factory rail. Your time and effort is better spent elsewhere if looking for performance.

If just looking for "looks", I can think of a few other places to start under the hood for my time and money.

You can research the wall thickness of the various production aftermarket rails to get a good idea of the stock to use is you insist. If not using an RRFRP and sticking with a the Walbro 190lph, it's tough to imagine reaching more than 90psi in the rail. Use that as a baseline.

 

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Put it this way, before you could make enough power to outflow the rail, you would need a built engine, a 6 speed, and something stronger than the usual torsen. Lots of other more worthwhile places to spend your cash.

 

If you are looking for that last %age of security, you can drill and tap the aft end of the stock rail to make it dual-feed. You have access to a shop, drill out the rail and tap it for a 3/8" or whatever barb, and feed both sides of the rail. That will get you uniform pressure at both ends. You certainly don't need more fuel, but even pressure is ideal.

In the past, there was a big "issue" with cylinder#4 being prone to damage while other cylinders were fine. It was thought on boosted cars that the aft cylinder was being starved for fuel under hi flow. Later is was discovered that most of those cars were victims of the factory coolant routing and overheating due to bad coolant flow and not fuel starvation.

 

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I believe in the USEFUL SAVED POSTS forum, there is at least one writeup on how to DIY dual-feed a stock rail.

 

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