Re: L89/L88 heads on EBAY, why so much?
 

Paul,

If those L/89 heads are indeed "as originally painted" - GREAT https://www.yenko.net/ubbthreads/imag...mlins/grin.gif

Do you have more detailed images of the overspray on these
L/89 heads? Did these heads also have the exhaust manifolds
intact? Were they also oversprayed? The amount of overspray
on aluminum heads has been debated for a long time. How
certain are you that they are "as originally painted"?

Steve

Re: L89/L88 heads on EBAY, why so much?
 

The person that I purchased them from said he bought them from an old hot rodder that "Rat Holed" all kinds of high performance Chevy parts. Said these were on the shelf collecting dust for 30 years and were low mile take offs. When they came in, all the parts were original and no bead blasting, etc. Even the valve seats had not been touched. At the time, I had an original Chevy Orange painted bellhousing clutch cover and placed it next to the overspray and it matched exactly. You can see the outline of the Exhaust Manifolds on each head. I asked myself, why would someone paint the Manifolds and part of the head if they were building the engine from scratch? I realized, that is the way engines were built at the Tonawanda plant, painted after assembly, exhaust manifolds and all. I do have some additional pics but no exhaust manifolds.

Paul

Re: L89/L88 heads on EBAY, why so much?
 

Regarding production dates for cars with open chamber 074 heads, my L88 was produced June 10 (K10 on Trim Tag)and the engine is T0309LO on the Protecto Plate. Were did you get the June 16 production date?
Paul

Re: L89/L88 heads on EBAY, why so much?
 

The date came from researching this, along with Tonawanda records. Your L88 is very close, we have others that have trim tags just before this date as well that utilize the 3946074 open chamber design engines.

I believe the number of L88's built with the open chamber design engines for the 1969 year is approximately 44 cars, of the 116 built for the model year. Most of course are closed chambered engine L88's.