[Hog]

What year Suburban fuel pumps are youy guys speccing? The following info may not bve accurate if you guys are using lower pressure TBI truck fuel pumps. I am assuming the higher pressure MPFI Vortec 454 from 96-97.

GM part number 25163473 or A/C Delco number EP-381 are $65 from Rock Auto.
Those pumps are the same for the 1991 4.3 Turbo Syclone and the 92-93 4.3l Turbo Typhoon. Also the same pump as for the 1996-1997 Vortec 305/L30, 350/L31, and 454 L29 for all 1/2,3/4 and 1 ton trucks, SUV's etc. Pretty much all the higher pressure CPI and CSFI 4.3's from 1991 up, NOT the low pressure TBI 4.3's.
This is the same pump that is specced by GM Performance Parts for the 502 hp Ramjet 502, the 493hp Ramjet ZL1 and the 350hp Ramjet 350 crate engines.
That pump is withjout a tank strainer, dont forget to order GM p/n 25055461 or Delco p/n TS7.$6.37.

Aeromotive has released a newer fuel pump that retrofits for these pumps as well. Its Aeromotive p/n SKU: 11169.
It flows 340 liters/hours at 40 psi and 270 liters/hour at 70 psi. And the ZR-1 can use 2!!.'
EDIT The Aeromotive pump is ethanol compatible, they do state that maintenace schedules are shorter with ethanol.


peace
Hog