There's a ledge on the passenger side of the motor above the water pump...I checked mortec.com and found that that is the ENGINE ASSEMBLY DATE/SUFFIX CODE...

My # is VO1116DJ. I decoded that it was made on a Jan. 11, but the rest I am confused about...it says "Chevy used one to three letters of the alphabet to code the type of engine, transmission and vehicle into the suffix code. In later years, parts of the Vehicle Identification Number (V.I.N.) were also added after the suffix code. "

Any ideas how I could decode that?

Any help is appreciated, thanks

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Stuart S
1987 Trans Am LB9/WS6
1986 Camaro IROC-Z
OEM Posterchild of the soon to be Infamous Long Island Crew

 

V = Flint Michigan assembly plant
01 = Jan
11 = day of month
I have no listing for the 6DJ code. It may be CDJ
CDJ = 1985 Camaro 305 V8
CDJ = 1982 Chevrolet 267 V8

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Stephen's racing page

87 IROC-Z Pro ET Bracket Race Car
383 stroker (carbed) with double hump cast iron heads and pump gas
454 Big Block buildup now in progress for the 2001 racing season

Best results before the 383 blew up
Best ET on a time slip: 11.857 altitude corrected to 11.163
Best MPH on a time slip: 117.87 altitude corrected to 126.10
Best 60 foot: 1.662

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car
91 454SS daily driver
95 Homebuilt Harley

 

We were pretty sure it was a 6...

Thanks for the reply

 

Motor in my 34 ford hot rod is supposed to be an 86 305 from an IROCZ. Can someone decode the engine pad stamp for me?

V0512PAA
3OX

Thanks
Bud

 

V = Flint engine plant
0512 = May 12
PAA = 305 TBI from a 1995 pickup truck (L03)
PAA = 305 SFI from a 1500 or 2500 GM van. Unknown year
PAA = 307 which is probably unlikely.

Since a 305, 307 and 350 won't share the same casting, a casting number check can determine if it's a 305 casting or not.