HELLLPPPP! engine coding amongst other things. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

UHcostUH · 05-25-2011, 08:58 PM

I have what I thought was an 84 1piece rms 350 from a 3500 series van. block code UFC when I took the heads off today though I found this. The bore is clearly not 4 inches I know the picture is bad but I only have two hands.
also have a casting code from the back of the block which I assume says 14094766. can someone please help me understand this.

Big Port Jimmy 6 · 05-25-2011, 09:12 PM

14094766=86 up 305. HTH Jay

UHcostUH · 05-25-2011, 09:29 PM

How come the front id number suffix would be UFC?

Big Port Jimmy 6 · 05-26-2011, 06:43 PM

I do not know, but the small bore says it aint a 350. Jay

Jonboy · 05-26-2011, 07:08 PM

The later model engines will have the displacement (in liters) on the back of the block behind the driver's side head. I bed yours says 5.0.

05-25-2011, 08:58 PM	#1
UHcostUH Registered User Join Date: Oct 2010 Location: Logan, WV Posts: 31	HELLLPPPP! engine coding amongst other things. I have what I thought was an 84 1piece rms 350 from a 3500 series van. block code UFC when I took the heads off today though I found this. The bore is clearly not 4 inches I know the picture is bad but I only have two hands. also have a casting code from the back of the block which I assume says 14094766. can someone please help me understand this. Attached Images __________________ uhcostuh 78k10,84k10,86c10,87k10

05-25-2011, 09:12 PM	#2
Big Port Jimmy 6 Addicted to Rust Join Date: Dec 2009 Location: Abbeville SC Posts: 1,030	Re: HELLLPPPP! engine coding amongst other things. 14094766=86 up 305. HTH Jay __________________ Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public.

05-25-2011, 09:29 PM	#3
UHcostUH Registered User Join Date: Oct 2010 Location: Logan, WV Posts: 31	Re: HELLLPPPP! engine coding amongst other things. How come the front id number suffix would be UFC? __________________ uhcostuh 78k10,84k10,86c10,87k10 Last edited by UHcostUH; 05-25-2011 at 09:30 PM.

05-26-2011, 06:43 PM	#4
Big Port Jimmy 6 Addicted to Rust Join Date: Dec 2009 Location: Abbeville SC Posts: 1,030	Re: HELLLPPPP! engine coding amongst other things. I do not know, but the small bore says it aint a 350. Jay __________________ Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public.

05-26-2011, 07:08 PM	#5
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	Re: HELLLPPPP! engine coding amongst other things. The later model engines will have the displacement (in liters) on the back of the block behind the driver's side head. I bed yours says 5.0. __________________ 1974 Jimmy- 5.3/4L80e/NP241 Last edited by Jonboy; 05-26-2011 at 07:08 PM.



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