Walbro 450 with factory EFI hanger PSA

[Richard]

Originally Posted by americanmusc1e

Interesting. I didn't realize you were LSA at first. I wonder what the amp draw is on that pump? PWM probably does help.

A quick google search says the factory CTS-V uses dual bosch pumps with around a 20A draw at 60PSI. According to 87chevy that is still more than my factory 80's blazer wiring bulkhead will do. Although it's less than the 25+ continuous amps of the Walbro 450.

What kind of tank are you using?

Using a modified 90 Blazer tank. Carl the owner of Vaporworx is local to me. Has a ton of knowledge regarding fuel systems and obviously knows a lot about his product. Good info on his website and I found several threads he has contributed to in my search of a fuel system for my LSA swap. Benefits of stock type PWM (what I have gathered from him) Pump has built in reservoir so no need for baffled tank, single fuel line to motor. Less amp draw, maybe not at full throttle with dual CTS-V pumps. But for a driver, idle and cruising can be half or less. An aftermarket return type system running at full tilt all the time will heat up the fuel. Pump will last longer due to not running at full tilt 100% of the time. Fuel delivery can be metered by pressure or map. Not intending to promote his stuff. Just pass on info. I paid full price for his product. He is a super nice guy as well.