I have a 302 in my 69 camaro. It's not the motor that came in the car, so I'm thinking of switching to a LS motor. It still has the 202 heads & original intake, valve covers etc. The casting # shows late 69 dz motor (3970010) the stamped # was decked off before I owned it. It's a complete running motor though I'm going to pull the heads off due to a leaking valve, but I'm not sure what it's worth? If it's not worth that much due to the stamped # being gone, I'll just keep it. Can anyone help?

 

if it has been decked there is no way to prove it was ever a DZ block!!??
there were hundreds of thousands of 010 blocks produced!!
if its a four bolt main 2-300 minus heads

 

if the 010 block designated DZ everyone and their mother would be fileing off the dz stamp pad area and asking 4000 for a bare block!

 

3932386 casted blocks were also used for dz engines

 

The crank shaft [ #1178 ], pistons, heads ,intake ,carb ,distributor ,valve covers and connecting rods are worth more than the decked engine block, as long as they are for a 302. I seen a process on line [ can't remember where ] where they use some kind of acid or something to see old block stampings that have been milled off. See if you can find a vin # on it, near oil filter area.

 

Thanks for the info, I had on idea

 

Thanks for the replies. I had no idea that the casting number meant that.

 

That engine isn't worth scrap. Give me your address and I'll be right over to take it off your hands!
As you may be starting to guess, your 302 is worth a pretty penny.....that is if you can prove it is what you think it is. To do that, you need the suffix code from the block.
I would be very interested in trying to retrieve the shaved code stampings, it can make a huge difference in how much the engine is worth.
It would be fun to try, and here's how you might be able to do that: http://www.chevy-camaro.com/faq/chev...storation.shtm

 

the stamp acid retreaval method is the same the police use to get filed numbers off a weapon and is not CHEAP so what if you spend the cash and then find out it isnt a dz block???

 

I raised the numbers on two running Corvette motor stamp pads once...in the car...a 66 425 hp and 69 435 hp. Both had been decked by the engine builder. I did it with an acetylene torch by heating the pad cherry red. On one of the cars, I removed the head and put a wet towel in the cylinder closest to the pad with piston in the down position. Did not do that on the 2nd one....just heated the pad. The compressed metal from the original stamp expands and raises above the decked surface and can be read. Now, this is something to be careful about...fuel, oil and warping metal. Be sure to only heat what you need to. If the surface is not smooth, it may not show at all and may not be worth doing. Heat it and as soon as the metal turns cherry red, don't get careless and melt something, then back off and let it cool off on its own and watch for numbers. As I remember, the numbers stayed, but have camera ready in case. I video taped the ones I did. I did this 15 years ago, so going from old memory here. I sold the cars and no one complained.