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ssjr103
05-03-2019, 04:23 PM
just got my baby (55 210 hardtop post) and starting to figure out what i have and what has been done to her over the years as it appears shes been molested bad. Tran i figured out is a 350Turbo but the motor is in ? stamp on block is K0403DTW then 39D470056. i cant find any thing to say what i got. 1 says 305 another says 350 autozone has no clue i know its correct number as a few others have same markings trying to figure what they have. thks for any help. will post pics of my poor ole girl soon.

BamaNomad
05-03-2019, 06:48 PM
There's no 'DTW' suffix shown in Ed's Lime book.... Ae you sure you read it correctly?

chevynut
05-03-2019, 06:58 PM
Personally I like "molested" cars better than original cars!!

What's a "hardtop post"? If it has a post, it's a sedan.

Look behind the driver's side head for the block casting number....that will give a good start.

ssjr103
05-05-2019, 01:04 PM
yep it is correct i have seen others asking about the same stamp and nobody seems to have an answer what it is

scorpion1110
05-05-2019, 06:36 PM
just got my baby (55 210 hardtop post) and starting to figure out what i have and what has been done to her over the years as it appears shes been molested bad. Tran i figured out is a 350Turbo but the motor is in ? stamp on block is K0403DTW then 39D470056. i cant find any thing to say what i got. 1 says 305 another says 350 autozone has no clue i know its correct number as a few others have same markings trying to figure what they have. thks for any help. will post pics of my poor ole girl soon.

DTU is a 1979 305 and and DWT is a 1983 TBI 305. Check the numbers again and supply a casting number. its likely a 305

BamaNomad
05-05-2019, 07:02 PM
Take a photo of the pad if you can?

scorpion1110
05-05-2019, 07:08 PM
Posted on the Corvette Forum:

I did'nt see "DTW" either, but all the "DT_" series, were 305ci used in 1979 ONLY. There were 16 "DT_" motors going from "DTA" to "DTZ" with "10" missing. "DTW" is one of the missing.