Engine casting numbers 1969
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Safety Car
Joined: Sep 2007
Posts: 4,458
Likes: 331
From: Indy Indiana
the only engine code on a 69 corvette big block with a H is MH - a 427-390, (not a 400).
that seems to be missing a M.. might have been a bad stamp strike.. remove the paint and look for a faint M.
that stamp looks to have good broach marks so a good chance of being legit. but the old paint negates the possibility somewhat.
check the casting date of the block...
that seems to be missing a M.. might have been a bad stamp strike.. remove the paint and look for a faint M.
that stamp looks to have good broach marks so a good chance of being legit. but the old paint negates the possibility somewhat.
check the casting date of the block...
Melting Slicks
Joined: Jul 2006
Posts: 3,103
Likes: 802
From: Massapequa Park NY
I agree with Joewill. The vin stamp looks factory but the date portion is not typical. The broach marks look good where they can be seen. Remove the paint on the rest of the pad very carefully with some lacquer thinner without scratching the stamp pad. Just gently rub the paint thinner along it.
Thread Starter
5th Gear
Joined: Sep 2019
Posts: 5
Likes: 0
the only engine code on a 69 corvette big block with a H is MH - a 427-390, (not a 400).
that seems to be missing a M.. might have been a bad stamp strike.. remove the paint and look for a faint M.
that stamp looks to have good broach marks so a good chance of being legit. but the old paint negates the possibility somewhat.
check the casting date of the block...
that seems to be missing a M.. might have been a bad stamp strike.. remove the paint and look for a faint M.
that stamp looks to have good broach marks so a good chance of being legit. but the old paint negates the possibility somewhat.
check the casting date of the block...
Safety Car
Joined: Sep 2007
Posts: 4,458
Likes: 331
From: Indy Indiana
engine date casting code is back behind the distributor on the flange where the bellhousing bolts on. there will be a casting number on one side and a casting date on the other side.
and no, it will not be the same as the assembly date stamping. it is usually a few days to a few months before.
and no, it will not be the same as the assembly date stamping. it is usually a few days to a few months before.
Thread Starter
5th Gear
Joined: Sep 2019
Posts: 5
Likes: 0
engine date casting code is back behind the distributor on the flange where the bellhousing bolts on. there will be a casting number on one side and a casting date on the other side.
and no, it will not be the same as the assembly date stamping. it is usually a few days to a few months before.
and no, it will not be the same as the assembly date stamping. it is usually a few days to a few months before.
