Adjustable Fuel Pressure Regulator?

[Sideburnz]

I want to thank everybody for the valuable info!

The reason I wanted to increase fuel pressure is because I am add a ported & polished throttle body, the Vmaxx manifold spacer along with a functioning ram air hood. So yes more air flow! I would really like to go with the marine intake but it's just not feasible at this time.

 

[L31MaxExpress]

Just to note. Those hp numbers don't include power enrichment either. So subtract another 20-25% on the hp.

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They will actually support a little over 400 at the crank without running out of fuel. Most injector calculators assume 0.5 BSFC. Most Vortec head small blocks are a good bit better. In the 0.4 to 0.45 range.

 

[Schurkey]

The reason I wanted to increase fuel pressure is because I am add a ported & polished throttle body, the Vmaxx manifold spacer along with a functioning ram air hood. So yes more air flow!

I'm not seeing anything in that list that would make a difference other than to lighten your wallet and give bragging rights over the other folks at the drive-in.

 

[RawbDidIt]

I want to thank everybody for the valuable info!

The reason I wanted to increase fuel pressure is because I am add a ported & polished throttle body, the Vmaxx manifold spacer along with a functioning ram air hood. So yes more air flow! I would really like to go with the marine intake but it's just not feasible at this time.

I'm not seeing anything there that would max out the fuel system. Schurkey is definitely more versed than I am, but from what I've read, this same fuel system at stock configuration is capable of throwing enough fuel through the cylinders even if you bore and stroke it to 383 cubic inches. Sounds like you'd have to go forced induction to need anything like that, and at that point, you'd be better off with an aftermarket fuel system anyway. That said, to each his own.

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[Supercharged111]

I'm not seeing anything in that list that would make a difference other than to lighten your wallet and give bragging rights over the other folks at the drive-in.

Plenum spacer is supposed to help. Some say it does, some say it doesn't. There's certainly not enough there to tax his fuel system and any increase in airflow will be matched with more fuel because the MAF sees it anyway.

 

[L31MaxExpress]

I'm not seeing anything there that would max out the fuel system. Schurkey is definitely more versed than I am, but from what I've read, this same fuel system at stock configuration is capable of throwing enough fuel through the cylinders even if you bore and stroke it to 383 cubic inches. Sounds like you'd have to go forced induction to need anything like that, and at that point, you'd be better off with an aftermarket fuel system anyway. That said, to each his own.

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You can run out of fuel with a 350 but need a big cam and a good set of heads to do it. I had a set of Etec 170s and a fairly mild cam and the injectors were almost maxed out at 70 psi. When the weather was very cold it would run over 100% duty cycle.

The intake base has horrible casting shift and the ports are terrible. Some cleanup goes a long way to helping it breathe better.

 

[RawbDidIt]

You can run out of fuel with a 350 but need a big cam and a good set of heads to do it. I had a set of Etec 170s and a fairly mild cam and the injectors were almost maxed out at 70 psi. When the weather was very cold it would run over 100% duty cycle.

The intake base has horrible casting shift and the ports are terrible. Some cleanup goes a long way to helping it breathe better.

I'm sure a built 350 can require an upgraded fuel system, but he's referring to a polished throttle body, a spacer, and a hood scoop. Not even in the same ballpark. I didn't mean to say that forced induction was the only way you'd need to run more fuel, simply using it as an example.

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