L89 Corvettes in 1967 had chrome valve covers. There were only 16 of these. The L88 had orange valve covers in 1967. The chrome valve cover L89 is a beautiful Corvette engine with the high rise tri-power intake.

1967 sunfire yellow l88 corvette coupe
 

My un-restored 69 L-89 had bare Aluminum heads, and by the pictures of the red car at Barrett-Jackson 2014, the heads are definitely orange so being a Duntov awarded car we can assume that that is the way the NCRS judges it in 1967 L-88 cars.

I do believe that in 1967 the L-89 cars were the only big blocks that came from the factory with chrome valve covers. I think in 1968 & 1969 all Big Block Corvettes had chrome valve covers.

Bill

i owned 2 L-89s back in the lates 80s. Both bare aluminum heads. low mile cars

Pics
 

Lee,
You’ve got some terrific pics!!!!!!!

That would be a 1968/1969 L88. The 1967 L88 didn't have a smog pump, even if delivered in California.

I'm no expert, but I believe it's a '68 with 842 heads. I think the '69 had 074 heads with no pipe plugs.

I saw the car at the Cinci regionals and the Greenville SC National NCRS show in 2019. STUNNING!
Corvette Mike's L88 also has a DUNTOV which requires a 100% on the PV performance verification - including a 10 mile drive with the judge to ensure everything operates correctly, accelerate up to 90% of redline. brake without the car pulling etc. No excessive wind noise etc etc etc
That says something about the quality of the restoration. No fan shroud and it didn't overheat during the drive.

This is an impressive Corvette indeed and an L88 with its OEM block and NCRS Duntov Award is nearly unheard of. I'm surprised its full history is not disclosed however.

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