dz 302 heads

[derek87cutty]

Just got a set of dz 302 heads and I'm trying to find out if they're worth anything.

 

[jmt455]

Could be worth good money...
What is the casting number and date(s)?

 

[CAPERKEV]

them heads are just old 202 camel bumps, i know of guys paying 500 for a set that needed rebuilding!!!! they worth money to the old gear heads, but there is alot better flowing heads out there now adays

 

[derek87cutty]

I traded a set of used 1977 lt-1 heads. Who got the better deal?

 

[DRIVEN]

I wasn't aware that they made an LT1 in 1977.

It's all about casting #s. I believe a true DZ 302 ('69 only) would have 186 heads. The MO/MP 302 ('67-68) would have had 291 casting numbers. Date codes would also need to correspond. Both of those casting #s were used on other engines in other years so to call them true DZ heads means that everything needs to be correct. On a numbers matching restoration it can be almost impossible to prove or disprove that a part originally came on a car as long as the casting # and date codes are right. Over the years parts get swapped due to service, repair and warranty work.

 

[clean8485]

GM didn't make an LT1 in 1977. They were produced from 1970 to 1972 for Corvettes and Camaros, and then GM revived that RPO code again in 1992, and the newer LT1 was produced until 1997.

 

[jmt455]

DRIVEN wrote: "It's all about casting #s. I believe a true DZ 302 ('69 only) would have 186 heads."

Exactly! The casting dates must match the 69 model year (roughly September of 1968 through May of 1969) for the heads to be considered "correct" for a real DZ engine.

Correct casting number: 3927186 (referred to as "186" heads)

 

[jmt455]

For example, a ready-to-run set of these heads is currently advertised on eBay with a Buy-it-now price of $1200.
http://www.ebay.com/itm/1969-CAMARO...Truck_Parts_Accessories&vxp=mtr#ht_500wt_1413

If these are what you got, I'd say you got the better side of the deal.