numbers real?
Thread Starter
Cruising
Joined: Dec 2011
Posts: 12
Likes: 0
numbers real?
This motor has been rebuilt twice and clearly it's been decked. However if you look closely at the pad there are still broach lines visible. The block casting date is Dec 18 69. Build date is [corrected 16-Feb!] Feb-70. Any point in thinking this is a real deal? FYI, heads, intake, casting codes all match up.
Last edited by mainline666; Feb 18, 2012 at 04:24 PM.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
Administrator
Joined: Jul 2000
Posts: 53,972
Likes: 6,197
From: About 1100 miles from where I call home.
but I agree the swirl marks make it look like it was sanded with sandpaper. Poor restamp.
Yep, 2-5 v 2-6... yikes.
Thread Starter
Cruising
Joined: Dec 2011
Posts: 12
Likes: 0
my bad on the build date, it's 16 Feb
Also, the photo didn't show up in the post as it looks on my camera. The lines between the build and serial stamps shows clear broach marks. The swirl marks are from the rebuild deck process.
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
It looks like someone used a palm sander to clean the gasket off the deck during a backyard rebuild. Can you guys who are saying it's a poorly done re-stamp point out some things that make you think that? 'cuz I don't see anything that doesn't look normal to my admitedly untrained eyes.
Keep the shiny side up!
Scott
Keep the shiny side up!
Scott
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Safety Car
Joined: Oct 2000
Posts: 3,593
Likes: 103
From: Southern Indiana
Above the VIN number is a ledge, but that is the head gasket not metal so it could have been decked and restamped.
I don't like the looks of the "6" in the block ID stamp.
Sadly the only way to tell is take off a head and use a dial indicater to see how high the piston comes up to the top of the bore.
Le Mans Master
Joined: Feb 2001
Posts: 6,304
Likes: 278
From: Ocala FL
Hard to tell, but I'd bet odds are like 95-05 original - restamp.
The sander marks where someone cleaned the old gasket material and paint off are throwing most of you. The broach marks are still visible, although this shows how sanding can cause a problem. And to think we used to clean grease and dirt off pads 30 and 35 years ago with screwdrivers and pocket knives.
Spacing on the assembly stamp is fine. It is spaced on character centers and the centers all line up, not on spacing between character edges.
As such, the 3880 isn't matching the spacing on the 70S40. However, since the last set of numbers changed out frequently, the last being for every car, this really is more the norm than the abnormal.
I would say it hasn't been decked. If decked, it would have taken the numbers off.
The "6" looking like a small b is typical.
The sander marks where someone cleaned the old gasket material and paint off are throwing most of you. The broach marks are still visible, although this shows how sanding can cause a problem. And to think we used to clean grease and dirt off pads 30 and 35 years ago with screwdrivers and pocket knives.
Spacing on the assembly stamp is fine. It is spaced on character centers and the centers all line up, not on spacing between character edges.
As such, the 3880 isn't matching the spacing on the 70S40. However, since the last set of numbers changed out frequently, the last being for every car, this really is more the norm than the abnormal.
I would say it hasn't been decked. If decked, it would have taken the numbers off.
The "6" looking like a small b is typical.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
Le Mans Master
Joined: Nov 2001
Posts: 8,662
Likes: 1,876
From: LONG ISLAND
2025 C3 ('68-'73) of the Year Finalist - Unmodified
2024 C3 of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
RESTAMP !!!
Too many different, styles, sizes, depths, spaces & poor alignment !!
Too many different, styles, sizes, depths, spaces & poor alignment !!
