JonAdkins

I'm fixing to finally drop my 408 into my Trans Am and I'm looking into a fuel pump and regulator setup. I plan on running the Racetronix 340lph kit since it seems to be the simplest kit for 98. What fuel pressure regulator setup are people having luck with? I've read mostly bad, but some good with the C5 setup and it does seem simple. I just don't want any issues with this.

Codys89RS

I have the racetronix regulator and bought a Mighty Mouse brake booster bracket for it.

i like it a lot

wlink14

Do not use the C5 regulator with anything other than a stock pump. Get an aftermarket external regulator and dont look back.

JonAdkins

I'm leaning towards external even though the simplicity of the C5 setup would be nice to have. How easy are external regulators setup?

91 Z28

iTrader: (3)

Super easy to set up. Just turn the screw in while checking your pressure then lock it down

RGSS

iTrader: (2)

I have a 340lph pump and a C5 regulator. The 340 pump slightly overpowers the C5 regulator and yields 64 psi at idle. Under higher fuel demands from the engine the fuel pressure drops to a steady 58 psi up to 7000rpm.
Have you considered the Holley 162-590 regulator? It is (on the outside) identical to the OEM C5 regulator, but Holley claims it can handle flows up to but not exceeding 450 lph. they have another version too, that comes with 6AN male ends on all the connections.
I myself am considering this option but am looking for feedback from actual users before having to do it twice.

JonAdkins

I'll look into that Holley regulator, looks promising to save a buck. Usually get what you pay for though.

jmilz28

iTrader: (13)

Going with this and a Racetronix 340. https://www.ws6project.com/user_stor...issbvstsa9one2

RGSS

iTrader: (2)

When are you doing the install?
Let us know how it turns out.