67 427/400 decked block

[David N.]

I recently bought a 67 roadster 427/400hp car. Block casting 3904351 date casting H156. Block stamp #'s T0821JC Vin stamp#7100335 tranny #100335, KA 66 rear end(the #'s hard to read on rear end) The exhaust manifolds 3880823 R F136 and 3880827 L F296. My issue is the block has been decked slightly. All #'s seem to point at the #'s matching, the tank sticker is with the car on the tank with the tri-power option. The #'s on the block pad are still readable. How does this affect the car down the road if i restore it? I had someone that knows these inspect this car and they believe they are legit as well. I dont want anyone to ever think i did something to alter the #'s to make it match. I bought this car for little money anyway, actually lower than what a non-#'s matching would sell for in this condition. Again, could someone please give me some guidence in regards to the decked block? Thanks and i hope this makes sense as i am still trying to understand these cars and i know the fraud out there so any help would be appreciated

[Mike M.]

Re: 67 427/400 decked block

if all that's wrong with the pad is absence of broach marks, there will be a 38 out of 4500 point deduction if you elect to have it judged in NCRS. mike

[David N.]

Re: 67 427/400 decked block

Thanks for the info, but will it be big issue to someone else buying this car if i ever sell it? From some i talk to, they say that is a negative behind this car, but it also is coming from people that know i got a good deal on this and probably want the car themselves....thanks

[Mike M.]

Re: 67 427/400 decked block

ideal scenario at selling time is unmolested pad and a ton of REAL paperwork. Some collectors avoid pads with no broach marks as their absence implies a restamped block. hard to say how much less valuable the car is without broachmarks but i'd guess at @ 20%. mike

[Louis Kolb]

Re: 67 427/400 decked block

You would be surprised how many people are out there with deep pockets who do not know anything about broach marks or what the numbers mean. A lot of people buy a Corvette because they always wanted one or they like the curb appeal of the one you have for sale.

[Mike M.]

Re: 67 427/400 decked block

it is the deep pocket dudes who buy a vette with questionable(unknown to the buyer at purchase time) pads ---these owners create real problems for ncrs judges the first time they take baby for judging. mikie

[David N.]

Re: 67 427/400 decked block

On my issue with the pad, i found the second owner of the car last night. He told me he threw a rod in this car so thus that probably what happended to the pad. He gave me the place that did the work but said it is no longer in business. How can or should i document this so i can match it to why the pad is decked? He doesnt have paperwork, but i did find out he has some trophies he got in the 70's on this car so i am excited he is giving those to me. Again, what can i do to support this info, as he even stated that is the original block in the car? He is trying to track down for me who he bought it from as that was the original owner so, maybe some more info will surface???Keeping my fingers crossed

[Louis Kolb]

Re: 67 427/400 decked block

You may do more harm than good if you tried to refresh the block to make it look like it should. When you bought the car, how much did you know about broach marks and stampings? Maybe your next buyer will know as much about these things as you did when it was your turn. Gather as much documentation as you can about the car's history. If the previous owner does not have paperwork from the machine shop doing the repair work, a notorized letter to you describing it may suffice. Documentation will speak louder than your words. Good luck on your venture!