rpm-inc

I know there are differences between the years. ??99-03, 04-06, 07+?? Are there differences inside those years? For cab and bed configurations, 1500, 2500, 3500, etc.

I have an 04 2500hd regular cab long bed. I want to get a bucket/module to modify and then swap in.

Thanks for the info.

Atomic

iTrader: (42)

The years won't line up exactly, but within the same style they are the same.

gearheaddrew

The differences come in float wire configuration.

The larger the tank - typically - the longer the float wire.

99-03 was a completely different module from the 04+ design. The tank opening for a 99-03 module is about half the size of a 04+ module.

What are you planning to modify on a stock bucket?

rpm-inc

I want to add a walbro 450 on a hobbs switch.

gearheaddrew

What are you trying to accomplish? supercharger? turbo? nitrous?

TI Automotive / Walbro's parent company has released some drop in units for the GMT900 trucks that contain the 450 pumps and come with the level sender assembly.

rpm-inc

For a turbo set up. Got a link?

gearheaddrew

https://www.holley.com/products/fuel...s/parts/12-954

It is called out as a 255lph but it has the F90000267 pump in.

gearheaddrew

here is a link to a member who used one on his 2500hd.

https://www.performancetrucks.net/fo...l-done-540302/

rpm-inc

Interesting. And expensive. If I were to replace the stock pump with the 450 and hotwired, can the regulator handle it?

gearheaddrew

Quality components are seldom cheap.

To answer your question it's not likely that the stock regulator will handle the extra flow.