Help Decoding Block Numbers Posting For A Friend
I have over come somthin and I really need some help. So if someone can help me that would be great. I have an 87 Chevy Silverado, but the title says GMC. It is made of aluminum heads (raised) # 5086 and 10,088,113 between the feathers, punch two digits (front) and 13 484 (see above exaust) 29 914. the block is a 350 fitted in the front of the block on small pad 0513ZZ3, and in the rear behind the flywheel on the driver’s side is H28 880, then on page 878, there then comes the part I cannot figure on the handle is a number I’m sure the cannot are, however, where not every 14088557 551, I’m positive. I was told it could not find a ZZ3 motor used as a storage engine, but as High Out Put Motor-car applications and marine applications ussally upcoming Corvette with Aloy heads. the CAM SET a compition CAM SET # 4808 ED is, roller rockers, lifters and cam. The pistons are forged aluminum Speed Pro 30 over boredom, the heads were shaverd so I have to use high octane number, or I get a ping, please help me with understanding My Frankenstein! Thanks ~ Cheeta
What expert says
There are 2 Responses to “Help Decoding Block Numbers Posting For A Friend”http://www.cehighperformance.com/c_truck_block_codes.htm
10088113…88-up…350……….Aluminum, 58cc, angle plug, raised “D” port exhaust, 1.94″/1.5″ valves. (which is theheads used on the ZZ3 crate engines)
“ZZ” Shows it was a GM performance parts crate engine. Starting in the late 80′s GM built the ZZZ, then ZZ1, ZZ2, ZZ3, and now the ZZ4 thats been out for a few years.
0513ZZ3… That should stand for May, 1st 1993.. Then ZZ3 means GM ZZ3 crate engine.
The ZZ engines are high performance crate engines.. Never installed as any OEM.. Bought through parts counter or a GM performance parts dealer.
The ZZZ, and ZZ1 had a few probs.. GM re-designed the ZZ engine and released the ZZ2.. Which had a dual pattern carb base, EGR valve , smaller, tamer camshaft, reduced height on the aluminum intakes, and few other changes.
I can’t remember all the specs on the ZZ3 but IIRC it was…
around 9.8:1 compression (just alittle lower than the newer ZZ4)
1 piece rear main seal with 4 bolt main
345 HP
hydraulic roller 208/221 @ .050, .474″/.510″ lift, 112deg lobe sep cam
Here’s some info I found on the net about the ZZ3
“ZZ3 345 horsepower High Output “crate” motor. The ZZ3 has aluminum heads, aluminum intake manifold, high lift roller cam, forged steel crank, 4-bolt mains, “pink rods”, and hypereutectic pistons with a compression ratio of nearly 10:1″