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Beelzeburb · 05-20-2011, 10:27 PM

1988 C3500
Model #C30903, regular cab, 8' fleetside bed
L19 engine option code, 7.4L V8 engine w/ EFI
YF5 California emissions (same as Federal emissions equipment, just extra testing)
MX1 automatic transmission (TH400)
Most likely GT4 (3.73) or GT5 (4.10) rear axle gears
KC4 engine oil cooler and V02 H.D. cooling package
Probably had Z82 trailering package too (hitch, wiring, transmission oil cooler)

05-20-2011, 10:27 PM	#120
Beelzeburb Devil's in the Details Join Date: Sep 2008 Location: Southern Utah Posts: 353	Re: Beelzeburb, The Story More Than a Decade in the Making 1988 C3500 Model #C30903, regular cab, 8' fleetside bed L19 engine option code, 7.4L V8 engine w/ EFI YF5 California emissions (same as Federal emissions equipment, just extra testing) MX1 automatic transmission (TH400) Most likely GT4 (3.73) or GT5 (4.10) rear axle gears KC4 engine oil cooler and V02 H.D. cooling package Probably had Z82 trailering package too (hitch, wiring, transmission oil cooler) __________________ '70 K10 Suburban - TBI 454, 4L80E, NP241C, Dana 60 & 44 - The 10+ Year Project Thread Datsun 240Z, 510 2 door and an old Honda motorcycle Last edited by Beelzeburb; 05-29-2011 at 06:50 PM.