Casting numbers
02-17-2012, 07:20 PM
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Car: 86 Trans am
Engine: LG4
Transmission: T-5
Axle/Gears: 3.27 9 bolt posi
Casting numbers
Ok so I finally got to that crate 350 the head casting numbers are 3998983 or3998993 can't tell for sure and the block number is 10066036 what is everything
02-17-2012, 08:15 PM
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Casting numbers
Sounds like the "Hecho En Mexico" Goodwrench 350...
Like Apeiron said, trash heads, but a decent block core. Flat-tappet cam in it probably; most likely a 929. Pistons will be SUPER low-compression.
Good block casting core; but when rebuild time comes (or even, the "more power Scotty" bug) the rest goes into the dumpster.
Like Apeiron said, trash heads, but a decent block core. Flat-tappet cam in it probably; most likely a 929. Pistons will be SUPER low-compression.
Good block casting core; but when rebuild time comes (or even, the "more power Scotty" bug) the rest goes into the dumpster.
02-17-2012, 08:54 PM
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Car: 1983 Z28
Engine: Forged 355
Transmission: 700r4
Axle/Gears: 2.73
Re: Casting numbers
One piece seal means that it is fitted for a roller can I believe. That would be a nice upgrade, and it's a good block.
02-17-2012, 09:04 PM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Casting numbers
It only means that it has a 1 piece RMS for certain. Those blocks have cast-in provisions for factory roller cams, and most of them have the machine work done to finish them, but not all of them have all of the necessary parts installed.
02-17-2012, 10:44 PM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Casting numbers
You can put a roller cam in any block. It' just cheaper if you can use all the factory stuff.
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